lyS VERTEBRATE ANIMALS OF THE UNITED STATES 



H. regilla Baird & Girard. Pacific tree frog. Body small, and gray, 

 green, brown or red in color, with a wide black band from the nostril 

 through the eye to the shoulder; either without markings or with elon- 

 gated black blotches on the back and a V-shaped spot on the head ; length 

 53 mm. : Pacific slope from Vancouver Island to Cape St. Lucas; ranging 

 from sea f level to 10,000 feet elevation; in low bushes, trees, moist 

 places on the ground, and in burrows of animals. 



2. Acris Dumeril & Bibron. Similar to Hyla, except that the digital 

 disks are minute ; hind toes webbed : i species. 



A. gryllus (LeConte). Cricket frog (Fig. 89 and 

 92). Body small, with a warty skin and very variable 

 in color, being usually some shade of brown or gray 

 with a black triangular patch between the eyes, the 

 apex of which is directed backwards, and usually 2 or 

 3 oblique spots on each side of the back; eyes orange; 

 Fig. gs.—Acyis length 25 mm.; hind legs 40 mm.; toes webbed; a fold 

 gryllus (from Park of skin over the tympanum and one across the breast: 



Museum Bulletin). i i • 



eastern and central America; northward to southern 

 New York and Connecticut; westward to Texas and Dakota; a diurnal 

 frog which lives in the grass and near marshy places, but not in trees. 



3. Pseudacris Fitzinger (Chorophilus Baird). Swamp cricket frogs. 

 Similar to Hyla, but without webs between the toes or very short ones, 

 and with very small digital disks : 6 species. 



Key to the Species of Pseudacris 



ai In the eastern and central States. 



bi Length of leg to the heel equals length of body P. feriarum. 



b2 Length of leg to heel equals space from eye to anus P. triscriata. 



ao In the southern States. 



bi Muzzle rounded in profile. 



Ci Skin warty above P. nigrila 



C2 Skin smooth above. 



di Hind foot not webbed P. occidentalis. 



do Hind foot slightly webbed. P. ornata. 



bi Muzzle truncate in profile P. ocularis. 



P . feriarum (Baird). Body coarsely granulated above and beneath, 

 warty above, greenish brown or gray in color, creamy underneath; 

 back usually with 3 longitudinal stripes; chin black in male; length 25 

 mm. ; hind leg 40 mm. : eastern States; westward to Illinois. 



P. triseriata (Wied). Body like P. feriarum, but with a pointed 

 head and shorter legs; color light ash, usually with 5 or 6 brown stripes; 

 length 25 mm. : central States from the AUeghenies to Arizona and Idaho. 



