394 NEW YOEK STATE -MUSEUM 



Said by De Kay to have beeu taken in Lake Erie. A western 



form. 



8 Malaclemmys centrata Labr. 



Salt marsh turtle, diamond back 

 De Kay. Emys palustris, the salt water terrapin, p. 10, pi. 3, fig. 5 

 Greenish or dark oUve, plates of both shells usually with concen- 

 tric dark stripes, sometimes grooved. Length 10 inches. 



Occasionally found along the coast ; the only one of our turtles 

 except the true marine forms, which is found in salt water. 



9 Pseudemys rubriventris Le Conte 



Red-hellied terrapin, slider 



De Kay. Emys rubriventris, p. 16, pi. 7. fig. 14 



Dusky or blackish with irregular red markings, specially on edge 



of shell ; plastron red and yellowish with dark spots ; head and neck 



brown witli reddish and yellowish lines. 



In streams in the southeastern part of the state. Used as a sub- 

 stitute for the real terrapin. 



10 Pseudemys hieroglyphica Holbrook 

 Shell depressed, olive brown, marked with groups of concentric 

 yellowish lines ; plastron yellowish ; head very small with yellow lines. 

 A southwestern form, habitat given bj' Jordan as New York to 

 Wisconsin and south. 



11 Chrysemys picta Herm. 



Painted turtle, rnud turtle 



De Kay. Emys picta, p. 12, pi. 5, flg. 10 



Greenish black, plates edged with yellow ; the marginal plates 



marked with bright red ; plastron yellow with brown blotches ; 



legs and tail with red lines ; upper jaw notched in front. Length 



6 to 8 inches. 



Very common throughout the state, preferring quiet waters and 

 frequently seen basking in the sun, on logs. 



12 Chrysemys marginata Agassiz 

 Colors similar to preceding, but plates of carapace alternating ; 

 the lateral rows out of line with the middle one, instead of forming 

 three sets of three as in above ; lateral plates with strong concen- 

 tric grooves. Possibly a form of the preceding. 

 Found in the western part of the state. 



