12 PROCEEDINGS OF THE NA'HONAL MUSEUM vol.74 



fc2. Dorsal crest extending to the vertical of the posterior edge of the eye; depth 

 of body in body width 1.5-2.0; muscalature in depth of tail 2.3-2.8, average 

 2.5; spiracle 1.6-1.75 nearer eye than snout; mouth 1.0-1.2 larger than 

 internasal space; one row of papillae below the third lower labial row of 

 teeth; papillae extend beyond the end of the upper fringe 0.14-0.20 of the 

 length of the upper fringe; horny beak in upper fringe 1.4-1.8; third labial 

 lower row 0.25-0.33 the length of the first lower row. 

 Eggs loose irregular mass. 

 Vancouver-Lower Cahfornia, Nevada. (PI. 4, fig. 5.) Hyla regilla. 



<;2. Third row of labial teeth long, longer than horny beak, or 0.75-1.00 of the 

 first lower row in length; upper fringe very angulate in middle; flagellum 

 on tail; tadpoles 32-50 mm.; heavy papillary development, lower labial 

 corner with three or four rows of papillae; two more or less complete rows 

 of papillae below third row of teeth (except in Hyla arenicolor) ; papillae 

 extend above and beyond the end of the upper fringe for about 0.30-0.40 

 the length of the upper fringe. 



fti. Third lower labial row 0.80-1.00 of the length of the first lower row; dorsal 

 crest extends to the vertical halfway from hind legs to spiracle, to spiracle 

 or halfway from spiracle to eye; dorsal crest equal to, greater or less than 

 depth of tail musculature; tadpoles 36-50 mm.; red may be present in the 

 tail; tail crest distinctly or more or less clear of spots next the musculature; 

 tail heavily blotched with dark blotches or spots. 



t'. Medium space between lateral upper rows 5.0-10.0 times in either lateral row; 

 spiracle 1.44-2.5 nearer eye than vent; width of body in its own length 

 1.6-2.1; eye 1.0-1.7 nearer spiracle than tip of snout; tail sometimes suf- 

 fused with coral red, coral pink, or "reddish" or "orange." 



j^. Medium space between lateral upper rows of teeth contained 6.0-10.0 in either 

 lateral row; 1st and 2nd lower rows of teeth 1.4-1.6 greater than horny 

 beak; mouth equal to internasal space; depth of tail in length of tail 1.6-2.75, 

 average 2.25; muscular part of tail in depth of tail 1.8-2.3, average 2.1; 

 depth of body 1.33-2.2 in body length, average 1.68; dorsal crest usually 

 equal to or greater than musculature depth; center of belly solid sulphur 

 yellow; tail 3-5 handed; light lateral band bounded below and above by a 

 brown band; flagellum clear of pigment; body olivaceous black. 

 Eggs a surface film. 

 North Carolina-Florida-Texas. (PI. 4, figs. 7, 9.) Hyla femoralis. 



j2. Medium space between lateral upper rows contained 5.0-10.0 times in either 

 lateral row; first and second lower rows of teeth 1.5-2.0 greater than horny 

 beak; third lower row of teeth may be equal to or slightly shorter than the 

 first lower row; no or few papillae beneath the third lower row of teeth, 

 surely not a complete row; mouth in internasal space 0.83-1.7, average 

 1.3; depth of tail in length of tail 2.85-5.15, average 3.75; musculature 

 of tail in depth of tail 1.28-1.76, average 1.6; depth of body in body length 

 1.75-2.3, average 2.0; dorsal crest half way to or to vertical of the spiracle; 

 dorsal crest less than the musculature; flagellum or tail tip spotted; body 

 greenish olive or deep olive; center of belly solid pale cinnamon pink. 

 Western Texas (Devil's River, Fort Davis Mountains., etc.)-Utah, Cali- 

 fornia, Mexico. 

 Eggs single, submerged (Atsatt and Storer). (PI. 5, fig. 3.) .-Hyla arenicolor. 



i'. Medium space between lateral upper rows contained 3.25-5.0 times in either 

 lateral row; spiracle 1.12-1.5 nearer eye than vent; eye about equidistant 

 between spiracle and tip of snout; internasal space in mouth 0.7-1.0; dorsal 

 crest extends to vertical of spiracle or half way between eye and spiracle; 

 dorsal crest equal to or greater than musculature depth; muscular part of 



