138 OHIO STATE ACADEMY OF SCIENCE. 
Crotalus horridus L. Above yellowish, with three rows of dark brown 
spots, irregular in shape and somewhat confluent. A light line from angle 
of mouth to eye, subtended by a black blotch. Tail darker. Below yellow- 
ish to dark grey. Scales 25, sometimes 23. Length 3 feet. 
This species is found only in rocky portions of the State. 
They are now nearly exterminated, but a few remain in certain 
localities. Thus, among the hills in the Scioto Valley from the 
line of glacial drift southward, they are met with in small num- 
bers. In the south-eastern portion of the State they are perhaps 
more frequently taken than elsewhere. On Mouse Island, off 
Catawba Point, in Lake Erie, there is a small colony that grows 
smaller every year. 
It is the most dangerous of our poisonous reptiles, both 
because of the venom being very efficient and because of the 
strength and size of the animal. The fangs are long, reaching 
even an inch in length. The musculature is powerful. 
The food of this reptile consists of small rodents, birds, frogs, 
etc. It is sluggish in-its habits and will not strike unless pro- 
voked unduly. Its stroke reaches about two feet. 
The writer has seen specimens taken in some of the places 
mentioned, but there are but few specimens in museums to sub- 
stantiate its being included here. 
One specimen in the zoological collection of the Sandusky High School 
has a definite record. 
Order: TESTUDINATA. 
This order includes the turtles, and concludes the list of 
Reptiles. No general work on the order is extant and the nomen- 
clature adopted is that given by Jordan (’99), which is that of 
Dr. Leonard Stejneger of the U. S. N. M. 
Family : 'TRIONYCHIDAE. 
*Amyda mutica (Le Sueur). Median line of back depressed. No 
tubercles. Nostrils not terminal, but rather placed below the end of the 
snout. Not recorded for Ohio. 
Aspidonectes spinifer (Le Sueur), Above flesh color to clay color, 
covered with black spots. Head and neck striped. Ground color greenish. 
Feet spotted. Nostrils at tip of snout. Length 1% feet. Feet broadly 
webbed. Body very flat. 
