36 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



as musculature width; not much different from lower crest and not 

 extending on body beyond the vertical through the buds of the hind 

 limbs. Spiracle sinistral, just visible from dorsal aspect, divided 

 backward and somewhat obliquely upward. Spiracle usually with 

 a distinct semicircular impression on body and opening. Opening 

 leaving exposed an elliptical or hemispherical patch on body. Spira- 

 cle clearly below lateral axis (musculature axis). Eye on or just 

 above lateral axis but in dorsal aspect nearer lateral outline than mid- 

 dorsal axis. Anus dextral, opening at edge of ventral crest. 



Mucif erous crypts distinct, white ; a short dorsal row of a few pores 

 on either side of middle line of the back from the dorsal crest forward ; 

 from above the middle line of insertion of tail musculature on body 

 to a short distance behind eye a prominent dorsolateral row; appar- 

 ently resumed behind eye after an interval and continued as supra- 

 orbital and infraorbital lines to above and below the nostril; another 

 lateral row from above insertion of hind legs to gill region where a 

 ventral commissure goes across to the row of the other side. A third 

 of the distance across the ventral branchial region, a branch from the 

 commissure goes outward and forward along the jaw region almost 

 to the mouth. 



Mouth parts. — Teeth -| or -|. Edge of upper labium greater than 

 length of upper horny beak and fringed by a continuous row of teeth. 

 Sometimes this fringe is broken up, as infigure. In either corner, 

 beneath this fringe, is a short row of teeth about one-fourth to one- 

 third of the length of the upper fringe. The outer end of this second 

 row never reaches outward beyond the first fringe. Median space 

 between these second-row teeth, one to one and one-half times the 

 length of either lateral series of the second row. In some median- 

 sized .tadpoles the space may be greater and the second row much 

 shorter or rarely absent. The third upper row very short, frequently 

 absent in young and medium-aged tadpoles. From above the end 

 of the first upper labial row of teeth to beneath the end of the third 

 lower labial row are two or three irregular rows of papillae which 

 are continued across lower labium's edge as one serrate row. The 

 third labial row longer than this single row of papillae, equal to 

 length of horny beak but one-fourth to one-fifth shorter than first 

 and second rows, which extend beyond the ends of the horny beak. 

 The first row is continuous or broken in the middle. 



Measurements. — Length of body (32.0-41.5 mm.) in tail (50-57.5 

 mm.) 1.4-1.85, average 1.625. Width of body (15.0-22.5 mm.) in 

 its own length 1.4-2.4, average 1.8. Depth (13-20 mm.) of body 

 0.9-1.6 in its own width, average 1.14, rarely greater than body. 

 Depth of body 1.8-2.46 in body width, average 2.08. Depth of 

 tail (14-18 mm.) in length of tail 2.6-4.6, average 3.2. Depth of tail 



