10 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



median space between the second upper rows of teeth 4J^ to 5 in either 

 lateral row; ends of second lateral row extending not at all or only slightly 

 above the end of the upper fringe; horny beak about 1.5 in upper fringe. 

 Eggs irregular mass. (PL 1, fig. 11.) Pseudacris (Buffalo). 



p2. Teeth occasionally |; tadpole to 33 mm.; spiracle 2.0-2.6 nearer base of 

 hind legs than tip of snout, average 2.16; nostril to eye 2.0 in nostril to 

 snout; tail crests clear, heavily pigmented with purplish black blotches 

 on the outer edge; no prominent dark lateral band with a clear light band 

 below; upper fringe not perceptibly angulate in the middle; two rows of 

 papillae on lower labial border below second lower row of teeth; median 

 space between second upper rows of teeth 2-3 in either lateral row; ends 

 of second lateral row extending \ to i; horny beak 1.75-2.25 in length 

 from one end of lateral row to end of the other lateral row. 

 Eggs, single, submerged. 

 Manitoba-New Bnniswick, South Carolina, Louisiana. (PI. 4, fig. 1.) 



Hyla crucifer. 



p. Labial teeth |. 



(/'. Third row of labial teeth short, shorter than horny beak or 0.20-0.40 of the 

 first lower row in length; upper fringe slightly or not angulate at all; no 

 flagellum ordinarily present; tadpoles 23-50 mm.; light papillary devel- 

 opment, lower labial corner not with 3 or 4 strong rows of papillae; one or 

 'two rows of papillae below third lower row of teeth; the papillae extend 

 above and beyond the end of the upper fringe for about 0.14-0.285 of the 

 length of the upper fringe. 



h>. Tadpoles 23-33 mm.; eye equidistant between spiracle and tip of snout; 

 spiracle 1.4-2.6 nearer vent or base of hind legs than tip of snout; spiracle 

 1.0-1.6 nearer eye than vent; papillae extend above the fringe for 0.16-0.25 

 of the length of the fringe. 



i^. Musculature with no distinct brown lateral band with light area below; crests 

 usually heavily pigmented with purplish black blotches on outer rim; 

 nostril to eye in nostril to snout 2.0; depth of tail in tail length 2.4-3.15, 

 average 2.7; spiracle 2.0-2.6 nearer vent than snout, average 2.16; no 

 papillae below third lower labial row of teeth, thus appearing as a goatee; 

 median space between second upper labial row 2-3 in either lateral portion; 

 horny beak in upper fringe 1.75-2.25. 

 Eggs single, submerged. (PL 4, fig. 1.) Hyla crucifer. 



i*. Musculature with a distinct brown lateral band vnth light area below; crests 

 usually clear with fine scattered fleckings, sometimes with fleckings gathered 

 nearer outer rim; one or two rows of papillae below the third lower labial 

 row of teeth; nostril to eye in nostril to snout 1.25-2.0; depth of tail in tail 

 length 2.9-4.4, average 3.4, 3.55; spiracle 1.15-2.1 nearer vent than snout, 

 average 1.5-1.875; median space between second upper labial row 2J^ or 

 3-7 in either lateral portion; horny beak in upper fringe 1.5-2.0. 



J*. Dorsal crest to vertical of spiracle; spiracle 1.0-1.66 (average 1.33) nearer eye 

 than vent; spiracle 1.15-1.95 (average 1.5) nearer vent than snout; mouth 

 1.0-1.25 larger than internasal space; two rows of papillae below third lower 

 row of teeth; third labial lower row 0.25-0.33 of the first lower row; first 

 and second lower labial rows 1.25-1.6 greater than the horny beak; horny 

 beak in upper fringe 1.5-1.75; median space between second row of upper 

 row 2J^ or 3-7 in either lateral portion. (PI. 1, fig. 12.) 



Pseudacris (Raleigh). 



j^. Dorsal crest to vertical midway between spiracle and eye; spiracle equidistant 

 between eye and vent; spiracle 1.7-2.1 (average 1.875) nearer vent than 

 snout; mouth and internasal space equal; one row of papillae below the 



