50 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



upper fringe. The horny beak is contained 1.5 times in upper fringe. 

 The median space between the second lateral upper labial rows of 

 teeth short contained four and a half to five times in either lateral 

 row. Upper fringe somewhat angulate in the middle. The outer 

 ends of the second row of upper labial teeth not extending beyond 

 the end of the upper fringe or only slightly. Inner papillae scarce, a 

 few at either outer corner of the lower labium. The first and second 

 row of lower labial teeth about equal, about 1.4-1.5 times the horny 

 beak in length. There is no third row as in Pseudacris ocularis. The 

 single row of papillae across the lower labial border about equal to 

 the second lower labial row of teeth. 



Measurements. — Length of body (7.0-8.8 mm.) in tail (11.0-14.2 

 mm.) 1.4-1.9, average 1.67. Width (4.2-5.4 mm.) of body in its own 

 length 1.4-1.75, average 1.58. Depth (3.4-5.0 mm.) of body 1.04-1.4 

 in body width, average 1.14. Depth of body 1.59-2.25 in body 

 length, average 1.77. Depth (3.4-5.0 mm.) of tail in length of tail 

 2.5-3.15, average 2.95. Muscular part (1.8-3.0 mm.) 1.4-2.5 in 

 depth of tail, average 1.9. Spiracle 1.4-1.9 nearer base of hind legs 

 or vent region (3.0-4.4 mm.) than the tip of the snout (5.0-6.0 mm.), 

 average 1.42. Spiracle 1.15-1.7 nearer eye (2.4-3.0 mm.) than base 

 of hind legs or vent (5.0-6.0 mm.), average 1.37. Eye 1.0-1.36 

 nearer spiracle (2.2-3.0 mm.) than tip of snout (2.8-3.0 mm.), 

 average 1.15. Nostril nearer eye (1.12-1.16 mm.) than snout (2.0- 

 2.6 mm.) 1.37-2.0, average 1.6. Mouth (1.6-2.0 mm.) usually equal 

 to internasal space (1.6-2.0 mm.) or slightly larger. Mouth con- 

 tained 1.5-2.1 (average 1.67) in interorbital distance (2.8-2.6 mm.). 

 Internasal space contained in interorbital space 1.5-2.0, average 1.22. 



The dimensions of the largest tadpole are : 



Mm. 



Total length 23. 



Body length 8.8 



Body depth 5. 



Body width 5. 2 



Tciillength 14.2 



Tail depth 5. 



Musculature of tail 2. 6 



Spiracle to snout 5. 4 



Mm. 



Spiracle to vent 3. 8 



Spiracle to eye 3. 



Eye to snout 3. 



Eye to nostril 1. 6 



Nostril to snout 2. 6 



Mouth 2. 



Interorbital distance 3. 6 



Internasal distance 2. 



PSEUDACRIS from Raleigh, N. C. 



Plate 1, figure 12 



General appearance. — Tadpole small (33 mm.), full, and fairly deep 

 of body. Tail medium in length, tail tip acuminate. Dorsal crest 

 extends on to body about to the vertical of the spiracle. Spiracle sinis- 

 tral, below lateral axis, directed backward and upward, opening round 

 or elliptical and plainly visible. Eye on the lateral axis, in dorsal 

 aspect on the lateral outline. Anus dextral, opening about on the 

 level of the edge of the ventral crest. Muciferous crypts indistinct. 



