CLARK ON REPTILES AND BATRACHIANS. 193 



12. Hemidactylium scutatura (Schlegel). Four-toed salamander. 



A single specimen of this uncommon salamander was collected May 13, 

 1901. It was found in the earth on the roots of a violet, which had been 

 pulled up. So far as I can learn, it has not previously been collected in 

 Michigan. Four other specimens, two males and two females, were 

 taken together in April, 1902, under a log. The females were fully twice 

 as large as the males. 



13. Plethodon cinereus (Green). Gray salamander. 



Quite common. 

 13a. Plethodon cinereus erythro)ivtus (Green). Red-backed salamander. 

 Rather common. 



14. Biemyctylus viridescens miniatus (Rafinesque). Red newt. 



Not common. The aquatic form has not been found yet. 



PROTEIDA. 



15. Necturits macitlatus (Rafinesque). Mud puppy. 



Not common, but occurs in the creek, northwest of Olivet. 



TESTUDINATA. 



16. Clielydra serpentina (L). Snapping turtle. 



Quite common. 



17. Chrysemys marginata (Agassiz). Common turtle. Painted turtle. 



Very common. Variations occur often, the most interesting of which are 

 as follows: in 2 specimens there were 13 plates on each side of the 

 carapace, instead of 12; in 1 specimen there were S median plates; in 

 another, 10 median plates with 4 on the left side and 5 on the right. 



These peculiarities occurred among 23 specimens examined. 



18. Clemmys gutiatus (Schneider). Spotted turtle. 



Apparently rather uncommon. 



19. Emydoidea blandingi (Holbrook). Box turtle. 



Quite common. 



20. Terrapene Carolina (L). Box turtle. 



There are 2 specimens in the Olivet college museum, which were in a 

 large can with specimens of chrysemys and other local reptiles and were 

 perhaps taken! somewhere in the vicinity. I have a specimen from Mont- 

 calm county. 



21. Aromochelys odoratus (Latreille). Musk turtle. 



Not uncommon. 



22. Aspidonectes spinifer (Le Sueur). Soft-shelled turtle. 



I have seen this turtle only at Narrow Lake in Brookfield. 



23. Graptemys geographiciis (Le Sueur). Map turtle. ! 



A single specimen has been taken. 



SERPENTES. 



24. Diadophis punctatus (L). Ring-necked snake. 



Rather rare; only 2 specimens have been taken. 



25. Liopeltis vernalis (De Kay). Green snake. 



Said to be common in the late summer, but I have not seen it alive in the 

 spring and early summer. 



26. Zamenis constrictor (L). Blue racer. 



Common. Reported 9 feet in length! The largest specimen I have seen 

 measured 69 inches. 



27. Coluber obsoleius (Say). Pilot snake. Black snake. 



Rather common. The largest specimen seen was 61 inches long. Small 

 specimens often show considerable white, but the larger ones show very 

 little on the upper surface. This snake is very gentle and makes an 

 interesting pet, as it will not attempt to bite unless needlessly irritated. 

 The bite is perfectly harmless, as shown by actual experience. This 

 snake is a remarkable climber. One specimen, loose in the laboratory, 

 climbed to the ceiling on a very slender, vertical wire, turned on itself 

 and came down without a slip, and crawled to the wall on a horizontal 

 wire of the same size! 

 25 



