The Terrapins 



carapace are irregular, vein-like lines, usually crossing the cen- 

 tres of the shields. 



The markings of the under, marginal shields of the carapace 

 are less brilliant than with the allied species; the red bars may 

 be present but they are of a dull hue. 



The symmetrical, black pattern on the plastron, is character- 

 istic. This is well illustrated in the photograph. The markings 

 on the head, neck and limbs appeal to the Western Painted 

 Terrapin, C. Cinerea. 



Dimensions. A female specimen from St. Clair County, 

 Illinois, shows the following measurements: 



Length of Carapace 5 J inches 



Width " 4* 



Length of Plastron 5i 



Total Width " 3* " 



Width of Head i 



Distribution. United States west of the Mississippi and 

 Ohio Rivers to British Columbia and eastern Oregon. 



THE CHICKEN TURTLE; LONG-NECKED TERRAPIN; 



RECTICULATED TERRAPIN 



Cbrysemys reticulatus, (Bosc.) 



The Chicken Turtle belongs to the first group of the genus, 

 but may be recognised by the following characteristics: 



1. The exceedingly long, snake-like neck. 



2. The absence of red markings on the upper and lower 

 marginal shields. 



3. The yellow bar on each upper marginal shield. 



4. The broad, yellow band on the forelimb. 



5. The narrow and rather globular shell. 



This species grows to a length of eight inches. The shell 

 is narrower and proportionately higher than that of any of the 

 terrapins. Though the neck is extremely long, the head is en- 

 tirely retractile. 



Colouration. Carapace olive or brown, with a net-work 

 of fine, yellow lines; the under marginal shields are yellow and 

 each contains a black blotch. Plastron immaculate yellow. 



On each forelimb is i wide, cream-coloured band; the under 

 surface of the tail and limbs is yellow, as is the greater 



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