\i w YORK SI a l 1 mi BEUM 



while no1 a single record liaa been obtained from the southern tier 

 sonntiee adjacent to the Pennsylvania border. In view of the 



number Incationa] institutions and local scientific societies in 



f York -tatr, it seems curious that bo little attention has been 



paid t«» thi> question. Data on the Bubject will l>e very acceptable 

 the author, who will also be glad to identify specimens sent 



to the Btate museum. Directions for collecting will be found in 



another section of this bulletin I p. l"7 . 



Key to genera 

 Mowing artificial key to the families and genera of the 

 of snakes occurring in the area discussed is based on 



structural character-, often of slight systematic value, and follows 

 closely the lines of the generic key in Jordan ('9 



iLUBBIDAE 

 A. No pit between eye and nostril; upper jaw with small teeth; neek not con- 

 stricted; head more or less elongate; top of head covered with plates; form. 

 in general, Blender 



a Dorsil scales (urinated 

 Anal plate entire 



a) Scales in 19-21 rows Eu t a en i a (p. 381) 



Scales in 37-81 rows Pityophis (p. 373) 



Anal plate bifid 

 (0 Scales in 1 .">-17 rows 



* Tail one third or more of total length. Cyc lophifl (p. 369) 

 ** Tail less than one third of total length. . Sto re r i a (p. 380) 



h) Scales in 19-27 rows 



* Rostral recurved; scales in 25 rows. . He t er odon (p. 368) 

 ** Rostral not recurved; gastrosteges less 



than 17() Matrix ip. 376) 



*** Rostral not recurved; gastrosteges 



more than 170 Coluber (p. 871) 



b Dorsal Bcales smooth 



\nal plate entire 



Bead Ba1t< ned Osceola (p. 874) 



h) Head conical Ophibolusip. 



2) Anal plate bifid 



<n Scales in 17 row- Z a in e n i s (p. 370) 



b) Scales in 18 row*; head not distinct. . Car] hophiops (p. 866) 

 r) Scales in 15 rows; superior labials 8 Diadophis p 867) 



Bcales in 15 rows; superior labials 7 Li o pel t is (p. 369> 



