CROCODILIANS, LIZARDS, AND SNAKES. 



965 



lu thirteen specimens in which f coiiuted the rows of scales I I'ouud 

 butoneiu which tlie number is not twenty-seven. This was in Cat. No. 

 10759, a small and starved imlividnal, whicli liad twenty-live rows. In 

 dimensions this water snake rather exceeds the N. s. fasciata, and is 

 only exceeded in one fauna by the N. ta.risjnlota. 



The Lower Mississi])pi is tlie headquarters of this si)ecies, where it is 

 very abundant. It is not yet known from east of that river, l)ut ranges 

 north to the limits of the Austroriparian region to southern Illinois and 

 west throughout Texas. It is the only one of our water snakes which 

 extends to the Tierra Caliente of Mexico, having been brought by the 

 exploration commission from Misautla, in the State of Vera Cruz.. 



Natrix rhomhifera Hallowell. 



Locality. 



When 

 collected. 



Southern Illinois ' 



Arkansas Kivei- 



Lafayette, Indiana ' 



Prairie Mer Kouge, Loui- ' , 



siana. I 



Grand Couteau, Louisiana 



Rio Pecos, Texas 



Wheatland, Indiana May 22, 1881 



do Apr.—, 1881 



Mount Carniel, Illinois ...' Nov. — , 1881 

 Wheatland, Indiana ' Apr. — , 1881 



.do 

 -do 

 do 

 -do 

 -do 

 -do 



1 



Wheatland, Indiana 



-..-do 



...do 



....do 



....do 



...do 



St. Louis, Missouri . 



Apr. — , 1881 

 Apr. — , 1881 

 Apr. — , 1881 

 May — , 1880 

 Apr. — , 1881 

 Apr. — , 1881 

 May 10, 1881 

 May 23, 1881 



, 1886 



, 1884 



From whom received. 



It. Kennicott 



L)r. S. W. Woodhouse. 



Jas. Fairie 



Capt. John Pope, U. S. A. 



K. Kidgway , 



do 



L. M. Turner , 



Kobert Kidirway 



.....do ?... 



-do. 

 .do. 

 .do. 

 .do. 

 -do. 



W. F. Page, U.S. K.C. 



Kobert Eidgway 



D. Ridgway 



do ' 



do 



do 



-...do 



J. Hurler 



Nature of 

 specimen. 



Alcoholic, 

 do. 

 do. 

 do. 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



From the large proportion of specimens in which the end of the tail 

 is lost, I suspect the enemies of this species are numerous. Can they 

 be turtles? 



NATRIX FASCIATA Linnseus. 



Natrix fasciata Cope, Proc. U. S. Nat. Mus., XI, 1888, p. 392. 



Coluder fasciatus Julias Mvs, Syst. Nat., I, 1766, p. 378. 



Coluber sipedon Linn.eus, Syst. Nat., I, 1766, p. 379. 



Tropidonotus fasciatits DuMKitiL and BiBKOX, Erp. Gdu., VII, 1854, p. 566. — Giix- 



THEU, Cat. Col. Snakes Brit. Mns., 1858, p. 76. — Boulenger, part, Cut. 



Snakes Brit Mus., I, 1893, p. 242. 

 Tropidonotus sipedon Cope, Check-list N. Aiacr. Batr. Kept., 1875, p. 42. 



Scales in twenty-three or twenty-five row.'^., all keeled, the external 

 larger than the others. Plight superior labials, center of eye over suture 

 between the fourth and fifth. Orbitals one to three; temporals one* 

 two, or three. Kostral jilate not inucli elevated; iiiternasal scuta each 

 longer tlian wide. Frontal plate rather narrow; parietal plates each 

 as long as frontal and prefrontal plates together. Pregeneials and post- 



