Hay Batrachians and Reptiles of D. C. 127 



with numerous scattered black specks; each side with a series of scarlet 

 spots each surrounded by a black ring. The young (var. miniatus] are 

 bright vermillion red with the spots on the sides rather indistinct. 

 Length about 3| inches. 



While this species is not often collected, on account of its retiring 

 habits and its very perfect color protection, it is common in most quiet 

 ponds where there is growing vegetation. I have found the immature 

 forms most abundant near Mt. Vernon. 



Key to the species of Salientia. 



a. Upper jaw toothless. r - - ':- - Bvfv lentiginosus, 12. 

 aa. Upper jaw with teeth. 



b. Fingers and toes more or less dilated at the tips, this dilation form 

 ing a viscid disk; small species, not over 2 inches long (body 

 measurement). 

 c. Disks small; fingers not webbed. 



d. Toes broadly webbed. .... Acris gryllus, 14. 

 dd. Toes scarcely webbed. ChoropJiilus nigritus, 15. 



cc. Disks well developed; fingers somewhat webbed. 



e. Color above clear green, with usually a few golden yellow 



specks. - -- . "' * .- - - Hyla evittata, 18. 

 ee. Color above grayish, greenish, or brown variously striped or 

 mottled 



/. Back with irregular lines forming an X, outside of which are 



other lines; general color brown. - Hyla pickeringi, 16. 



ff. Back uniform or mottled, general color grayish-green, gray, 



or brown. "'', 1 ^- - '''-.* - " -' ' - Hyla versicolor, 17. 



bb. Fingers and toes not specially dilated at the tips and not provided 



with adhesive disks; larger species, 2| inches long or more. 

 g. Sole of foot with a horny spade-like process; form squat and toad- 

 like; hind legs weak. - - - Scaphiopus holbrooki, 13. 

 gg. Sole of foot without a spade-like process; body frog-like; hind 



legs powerfully developed. 



li. Sides of back nearly smooth, the glandular thickening of the 



skin being obsolete. - . Rana catesbeiana, 23. 



?ih. Side of back with one or more well developed, thickened ridges 



of skin. 

 i. Back with large distinct black spots, more or less regularly 



arranged. 

 j. Outline of dorsal spots irregularly roundish. 



Rana pipiens, 19. 



jj. Dorsal spots squarish in outline and arranged in two fairly 

 regular rows. .... Rana palustris, 20. 

 ii. Back with small, indistinct spots or none. 

 k. A conspicuous dark stripe from snout to front of eye. 



Rana sylvatica, 22. 

 kk. No conspicuous dark stripe on side of head. 



Rana clamata, 21. 



