HERPETOLOGY OF PORTO RICO. 



577 



become longitudinal streaks, as is commonly the case in Porto Rican 

 specimens. 



Description of tadpole. — U.S.N.M. No. 26895; Catalina plantation, 

 Porto Rico, about 900 feet altitude; March 1, 1900, L. Stejneger, col- 

 lector. Length of body about once and one-third its width and 

 slightly less than one-half the length of the tail; nostrils nearer the 

 eyes than the end of the snout; distance between eyes one-fifth more 

 than distance between the nostrils, and considerably less than width of 

 mouth; distance between nostrils equals their distance from eyes, as 

 well as the diameter of the eyes; spiraculum on left side, directed 

 backward and upward, situated above a line drawn between the base 



M W 



12 



14 



Figs. 11-14. — Leptodactylus albilabris, tad- 

 pole. 11. lateral view; 12, dorsal view; 13, ven- 

 tral view. 2 x natural size. 14, mouth, 20 x 

 natural sizo. 



of the muscular part of the tail and the mouth, and nearer to the pos- 

 terior extremit}^ of the bod} r , being about halfway between anterior 

 border of eye and insertion of hind legs; anus a long tube, median and 

 larger than the spiraculum; tail about four times as long as deep, end- 

 ing in an obtuse point; both upper and lower crests contined to the tail 

 and nearly equal in depth, their edges being nearly parallel until the 

 terminal third; the depth of the muscular part of the tail at its base 

 about two-thirds the greatest total depth. 

 NAT mus 1902 37 



