REPTILES 229 



K. haurii Garman. Carapace 900 mm. long and 65 mm. wide; color 

 brown or olive, with 3 yellow bands extending the length of the cara- 

 pace: Florida and Georgia. 



A", steindachneri Siebenrock. Similar to A', suhruhrum, but differs 

 in having a very short bridge: central Florida. 



K. suhruhrum (Lacepede) (A. pensilvanicum Gmelin). Common 

 mud-turtle (Fig. 130). Carapace 85 mm. long and 60 mm. wide; 

 plastron 78 mm. long and 37 mm. wide; color dark brown, with black 



Fig. 130. — Kinoslernon subrubrum (from Surface). 



sutures; plastron yellow or brown, with distinct lines of growth; head 

 dark, with yellowish spots: eastern and central States from New York 

 south, exclusive of peninsular Florida; westward to Texas, Missouri and 

 eastern Illinois; common. 



Subspecies of A. subrubrum 



A. s. hippocrepis (Gray). Two orange bands on the side of the 

 head: southern Alabama to Texas and northward in the Mississippi 

 Valley to Missouri. 



K. flavescens (Agassiz). Carapace no mm. long and 80 mm. wide; 

 color yellowish brown and yellowish green; plastron yellow; sides of 

 head and neck bright yellow: Texas to Arizona; northward to Illinois, 

 Kansas and Colorado. 



K. sonoriense LeConte. Carapace no mm. long, 67 mm. wide; 

 color brown, with faint darker radiating lines on each plate; vertebral 

 plates imbricating: western Texas into southeastern California. 



Family 2. Chelydridae. — Snapping turtles. Body large, high in 

 front; carapace rough and tuberculate, and with 24 marginal plates; 

 plastron small, cruciform and composed of 10 plates, besides the 2 

 narrow bridges; head, neck and tail very large; jaws powerful and 

 hooked; toes 5-5, with small webs; claws 5-4: 3 species, 2 in the United 

 States; the largest turtles in the country (except the marine turtles), 



