COLD-BLOODED VERTEBRATES. 43 



Carphophiops amsenus (Say) — Worm Snake. 



Though no locality has ever been given for this species in 

 Delaware County, it doubtless occurs. It lives under logs and 

 in the ground. 



Regina leberis (Linnaeus) — Leather Snake. 



Found around streams and in meadows. Reported from 

 near Moylan. 



Natrix sipedon (Linnaeus) — Water Snake. 



Abundant about the river marshes, and along most water 

 courses. I found it at Wawa, Markham, Langford's Run, 

 Swarthmore, Collingdale, Collar Brook, Tinicum and Lester. 



Storeria dekayi (Holbrookj — De Kay's Snake. 



This small snake is likely more frequent than the few records 

 suggest. It often occurs about old dumps. I met with it on 

 Tinicum Island, and in the vicinity of Lester. 



Liopeltis vernalis (Harlan) — Green Snake. 



Known from the record Dr. Henry Tucker gave me of an 

 example taken near Swarthmore some years ago. It doubtless 

 occurs in other sections of the county. 



Coluber constrictor (Linnaeus) — Black Snake. 



Apparently rare. I have seen examples from Collingdale, 

 Wawa and Aldan. 



Tharanophis sauritus (Linnaeus) — Ribbon Snake. 



Sometimes abundant. Dr. Francis Pennell and the writer 

 found a number about Chester Heights and Wawa, several 

 years ago. 



Thamnophis sirtalis (Linnaeus) — Garter Snake. 



Common. Chester Heights, Wawa, Collingdale, Collar 

 Brook, Swarthmore, Nay lor 's Run. 



Lampropeltis doliatus triangulus (Daudin) — House Snake. 



In my experience not common. My examples from near 

 Wawa and Concordville. 



