HERPETOLOGY OF PORTO RICO. 



571 



Description of adult— U.S.-N.M. No. 27148; Arecibo, Porto Rico; 

 April 4, L900; L. Stejneger, collector. Top of head bony, with enor- 

 mous crests inclosing a deep hollow between the orbits, the height of 

 the supraorbital crest being about 7 nun. above the interorbital space 

 and 3 mm, above the eyelid; the orbital crest originates on the can- 

 thus rostralis extending backward in a great arch to behind the eye, 

 from which point a similarly high supratympanic crest projects back- 

 ward, ending in a rounded knob; from the supraocular crest a lower 

 anteorbital ridge and a higher postorbital crest descend toward the 

 edge of the upper jaw, joining there the high supralabial crest, which 





w 



Figs. 2-5. 



bufo lemur. 



Natural size; 2, side of head; 3, top of head; 4, underside fore foot; 5, underside hind foot. 



No. 27148, U.S.N. M. 



extends from below the nostril to the juncture with the postorbital 

 crest; from the inner side of the supraorbital crests a low parietal 

 spur proceeds obliquely toward the occiput, not as a continuous crest, 

 but broken up into several ridges and knobs; snout prominent; lores 

 deep; eyes sunk deep in a large squarish socket; upper lip expanded 

 horizontally as a bony crest several millimeters wide; tympanum ellip- 

 tically erect, its horizontal diameter scarcely one-half the width of the 

 eye; parotoid gland large, descending behind the ear, but not of very 

 distinct outline, as it is densely covered with large conical warts, each 



