567:
33:
56:
647:
642:
632:
490:
608:
451:
477:
334:
297:
539:
482:
601:
358:
314:
228:
158:
318:
495:
652:
594:
55:
627:
354:
224:
154:
32:
566:
378:
637:
516:
544:
438:
237:
41:
363:
Catalogue of North
American Reptiles in the Museum of the Smithsonian Institution. Part I.—Serpents.
327:
Peterson Field Guide to
Reptiles and Amphibians of Eastern and Central North America, Fourth Edition
50:
521:
503:
425:
330:
322:
578:
531:
508:
195:
219:
329:. Boston and New York: Houghton Mifflin Harcourt. xiv + 494 pp., 47 plates, 207 figures.
621:
262:
203:
416:
430:
464:
410:
178:
401:
574:
266:
243:
184:
181:
137:
127:
67:
365:
Washington, District of
Columbia: Smithsonian Institution. xvi + 172 pp. (
395:
107:
87:
456:
275:
199:
97:
469:
77:
372:
302:
187:
174:
117:
376:
443:
214:
The following two species are recognized as being valid.
582:
273:
have smaller heads than the water snakes of the genus
385:
602:
8:
202:which are found in the eastern and central
609:
595:
373:
31:
20:
288:
194:, named after their primary choice of
648:Taxa named by Charles Frédéric Girard
643:Taxa named by Spencer Fullerton Baird
265:in 19 rows at midbody, and a divided
7:
633:Extant Pleistocene first appearances
563:
561:
269:. The crayfish snakes of the genus
581:. You can help Knowledge (XXG) by
14:
565:
54:
1:
198:. The genus consists of two
305:. www.reptile-database.org.
669:
560:
257:Both species in the genus
573:This article relating to
369:, new genus, p. 45).
233:– Graham's crayfish snake
51:Scientific classification
49:
39:
30:
23:
517:Paleobiology Database
303:The Reptile Database
238:Regina septemvittata
42:Regina septemvittata
590:
589:
555:
554:
504:Open Tree of Life
379:Taxon identifiers
335:978-0-544-12997-9
166:
165:
162:
660:
653:Natricinae stubs
611:
604:
597:
569:
562:
548:
547:
535:
534:
525:
524:
512:
511:
499:
498:
486:
485:
473:
472:
460:
459:
447:
446:
434:
433:
421:
420:
419:
406:
405:
404:
374:
342:
312:
306:
293:
247:
232:
153:
59:
58:
35:
21:
668:
667:
663:
662:
661:
659:
658:
657:
618:
617:
616:
615:
558:
556:
551:
543:
538:
530:
528:
520:
515:
507:
502:
494:
489:
481:
476:
468:
463:
455:
450:
442:
437:
429:
424:
415:
414:
409:
400:
399:
394:
381:
351:
349:Further reading
346:
345:
313:
309:
294:
290:
285:
255:
241:
223:
220:Regina grahamii
212:
192:crayfish snakes
152:
53:
17:
16:Genus of snakes
12:
11:
5:
666:
664:
656:
655:
650:
645:
640:
635:
630:
628:Regina (snake)
620:
619:
614:
613:
606:
599:
591:
588:
587:
570:
553:
552:
550:
549:
536:
526:
513:
500:
487:
474:
461:
448:
435:
422:
407:
391:
389:
383:
382:
377:
371:
370:
350:
347:
344:
343:
307:
287:
286:
284:
281:
254:
251:
250:
249:
234:
211:
208:
164:
163:
145:
141:
140:
135:
131:
130:
125:
121:
120:
115:
111:
110:
105:
101:
100:
95:
91:
90:
85:
81:
80:
75:
71:
70:
65:
61:
60:
47:
46:
45:, queen snake
37:
36:
28:
27:
15:
13:
10:
9:
6:
4:
3:
2:
665:
654:
651:
649:
646:
644:
641:
639:
636:
634:
631:
629:
626:
625:
623:
612:
607:
605:
600:
598:
593:
592:
586:
584:
580:
576:
571:
568:
564:
559:
546:
541:
537:
533:
527:
523:
518:
514:
510:
505:
501:
497:
492:
488:
484:
479:
475:
471:
466:
462:
458:
453:
449:
445:
440:
436:
432:
427:
423:
418:
412:
408:
403:
397:
393:
392:
390:
388:
384:
380:
375:
368:
364:
360:
356:
353:
352:
348:
340:
336:
332:
328:
324:
320:
316:
311:
308:
304:
300:
299:
292:
289:
282:
280:
278:
277:
272:
268:
264:
263:dorsal scales
260:
252:
248:– queen snake
245:
240:
239:
235:
230:
226:
222:
221:
217:
216:
215:
209:
207:
205:
204:United States
201:
197:
193:
189:
186:
183:
180:
176:
172:
171:
160:
156:
151:
150:
146:
143:
142:
139:
136:
133:
132:
129:
126:
123:
122:
119:
116:
113:
112:
109:
106:
103:
102:
99:
96:
93:
92:
89:
86:
83:
82:
79:
76:
73:
72:
69:
66:
63:
62:
57:
52:
48:
44:
43:
38:
34:
29:
26:
22:
19:
638:Snake genera
583:expanding it
572:
557:
386:
366:
362:
338:
326:
310:
296:
291:
274:
270:
261:have keeled
258:
256:
236:
218:
213:
191:
169:
168:
167:
148:
147:
40:
24:
18:
465:iNaturalist
411:Wikispecies
253:Description
179:semiaquatic
134:Subfamily:
622:Categories
575:Natricinae
341:, p. 422).
323:Collins JT
283:References
267:anal plate
138:Natricinae
128:Colubridae
114:Suborder:
337:. (Genus
190:known as
182:natricine
118:Serpentes
74:Kingdom:
68:Eukaryota
402:Q1924194
396:Wikidata
361:(1853).
359:Girard C
355:Baird SF
325:(2016).
319:Conant R
315:Powell R
185:colubrid
124:Family:
108:Squamata
98:Reptilia
88:Chordata
84:Phylum:
78:Animalia
64:Domain:
545:1377335
532:4918329
509:1082137
457:2452089
276:Nerodia
246:, 1825)
210:Species
200:species
144:Genus:
104:Order:
94:Class:
529:uBio:
496:183601
483:174122
417:Regina
387:Regina
367:Regina
339:Regina
333:
298:Regina
295:Genus
271:Regina
259:Regina
231:, 1853
229:Girard
227:&
188:snakes
170:Regina
161:, 1853
159:Girard
157:&
149:Regina
25:Regina
577:is a
540:WoRMS
522:67536
470:28849
444:35504
225:Baird
175:genus
173:is a
155:Baird
579:stub
491:NCBI
478:ITIS
452:GBIF
431:77HW
331:ISBN
196:diet
439:EoL
426:CoL
301:at
244:Say
177:of
624::
542::
519::
506::
493::
480::
467::
454::
441::
428::
413::
398::
357:,
321:,
317:,
279:.
206:.
610:e
603:t
596:v
585:.
242:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
