40 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ?4 



by a continuous row of teeth. In either corner beneath this fringe 

 is only one very short row about one-sixth to one-eighth of the length 

 of the upper fringe. Median space between these two short rows is 

 two and one-half to four and one-half times the length of either of 

 these rows. The outer end of the second upper row does not extend 

 beyond the end of the upper fringe of teeth. The third lower labial 

 row of teeth much shorter than the single serrate row of papillae, 

 much less than length of horny beak (contained one and one-half 

 times in it) and one-third shorter than the second or first lower rows 

 of teeth. These two rows about equal to horny beak in length and 

 equal to each other. The first row may be continuous or interrupted 

 in the middle. In mouth parts it is distinctly of the R. clamitans 

 type and nearer this species than B. catesheiana. 



Measurements. — Length of body (31.0-35.6 mm.) in tail (55.0- 

 70.5 mm.) 1.1-2 A, average 1.84. Width (17-22 mm.) of body in its 

 own body length 1.5-2.15, average 1.8. Depth (14-20 mm.) of body 

 equal to (1.0) or slightly less (0.8-0.9) than body width. Depth of 

 body 1.5-2.55 in body length, average 1.98. Depth (17-23 mm.) of 

 tail in length of tail 1.45-1.8, average 1.7. Depth of tail 1.05-1.5 

 deeper than depth of body, average 1.2. Muscular part (9.5-14.5 

 mm.) contained in depth of tail 1.3-1.7, average 1.5; "in smaller speci- 

 mens 1.75-2.1. Spiracle 1.1-1.6 nearer base of hind legs or vent 

 region (13-19 mm.) than the tip of the snout. Spiracle 1.25-1.9 

 nearer eye than base of hind legs or vent, average 1.56. Eye 1-1.35 

 nearer to tip of snout (7-10 mm.) than to spiracle (8-12.5 mm.); in 

 some younger tadpoles occasionally near (0.88-0.95) spiracle. Nos- 

 tril 1.0-1.4 nearer snout than eye, rarely equidistant. Mouth 

 (4-6 mm.) usually 1.0-1.6 larger than internasal space (3.6-5.5 mm.), 

 average 1.15. Mouth contained 1.5-2.37 (average 1.94) in inter- 

 orbital distance (7-12.0 mm.). Internasal space contained in inter- 

 orbital space 1.8-2.6, average 2.16. 



The dimensions of the largest tadpole are: 



Mm. 



Spiracle to vent 19. 



Spiracle to eye 10. 



Eye to snout 9.8 



Eye to nostril 5. 



Mm. 



Total length 100. 



Body length 35. 6 



Body depth 20. 



Body width 22. 



Tail length 64. 4 



Tail depth. 23.0 



Musculature of tail 13. 5 



Spiracle to snout 21.0 



Nostril to snout 3.5 



Mouth 5.5 



Interorbital distance 11. 



Internasal distance 5. 5 



RANA SEPTENTRIONAUS Baird 



Plate 8, figure 6 



Color description Jrom lije {July 11, 1923). — General coloration is 

 citrine or yellowish olive to dark olive or oHve in specimens where hind 

 legs begin to develop well. On the back are small scattered dark spots 



