MICHIGAN ACADEMY OP SCIENCE. 
107 
the bank of a small ditch near Ditch Lake. It was common along the 
borders of the lakes and streams. 
7a. Bascanion constrictor Linneaus. — This species occurs commonly 
along the borders of marshes and lakes. Four specimens were taken in 
May, 1911. 
7b. Opliibolus doliatns triangulus (Bole). — A single specimen was 
taken in May, 1911. 
8. Heterodon platyrliinus Latreille. — One specimen was taken in 
Cassopolis and later presented to us. Inasmuch as the residents gener- 
ally confuse those snakes which even in a slight respect' resemble the 
rattler, it was impossible to get other certain records of its occurrence 
in the region. It is to be expected that it occasionally comes in from the 
sand region along the shore of Lake Michigan. 
9. Si strums catenatus (Rafinesque). — Two rattlesnakes were taken. 
One, a, large female was found under a pile of old stumps at the border 
of a marsh; the other, a very small individual, was discovered coiled up 
on a tuft of grass at the boat landing on Long Lake. 
TESTUDINATA.* 
10. Trionyx spiniferus Le Seur.— Three soft-shelled turtles were 
secured, one from Long Lake and two from Turtle Bay, Diamond Lake. 
It was very plentiful in Turtle Bay, but only one other than the one 
taken was observed in Long Lake, and it probably occurred in smaller 
numbers there. 
11. ChelyrXra serpentina Linneaus. — This species was very common 
throughout the region. That it is a very favorable locality for them is 
also shown by the very large size to which they attain. Twelve speci- 
mens were taken. 
12. Aromochelys odoratus Latreille. — This species was abundant in 
the Mud Lakes, but none were seen in Diamond Lake. Nine specimens 
were taken. 
13. CTirysemys cinerea (Bonn). — This species was found in large num- 
bers in all the lakes worked, and frequently on land. Sixty-four speci- 
mens were secured. Many of these showed marked variation in the 
number and arrangement of the plates of the plastron. 
14. Emys bland in f/ii, (Holbrook). — Three specimens taken in Mud 
Lake, together with another which escaped were the only individuals 
of this species seen. 
15. Clcmmys guttata, (Schneider). — But one specimen of the spotted 
turtle was taken in 1910 and no others were seen. The specimen secured 
was caught in the turtle net set in a ditch where they were formerly very 
abundant. There is a specimen in the University of Michigan Museum 
which was taken from the same place in 1907. Eighteen specimens were 
secured in 1911. 
16. Terrapcne Carolina (Linneaus). — The land tortoise is quite com- 
mon in the region, especially in the woods on the high banks along 
Ditch Lake. Three specimens were taken, two near the lake and the 
third in the woods along the ditch about a mile from the lakes 
Ann Arbor, Mich., April, 1911. 
* Malaclemvs geographica (Le Seur). — Probably occurs in Cass County, since Gibbs, Notestein and 
Clark (Annual Report Mich. Acad. Sci., 1905, p. 110) list it from Van Buren County, and there are 
specimens in the University of Michigan Museum from St. Joseph County. 
