ON THE BATRACHIA AND REPTILIA OF COSTA RICA. 101 



parotoid and one from groin. Limbs irregularly light varied above. Under sur- 

 face immaculate. 



Length of head and body 2 in. 6 1. ; breadth at angle of jaws below, 1 in. ; 

 length of fore limb 1 in. 5 1. ; length of foot 1 in. 3 1. 



C. N. Riotte. Smithsonian collection, No. 6490. 



This handsome species resembles the B. ocellatus, Gthr., in coloration. 



10. Bufo sternosionatus, Giinther, Catal. Batracb. Salientia Brit. Mus. 1858, p. 68. 



Said to have been found in Costa Rica by Keferstein, Archiv. fiir Natur- 

 geschichte, 1868, 294. 



11. Bufo agua, Daudin. 



Large and small specimens from the Eastern coast. This species is especially 

 abundant about houses. 



12. Bufo h^ematiticus,* Cope, Proceed. Acad. Philadelphia, 1862, 157. Sipurio. 



FIRMISTERNIA. 



13. Hypopachus vakiolosus, Cope. Engystoma variolosum, Cope, Proceed. Acad. Philada. 1866, 



p. 131; Proceed. Amer. Philos. Soc. 1869, p. 166. Hypopachus seebachii, Keferstein, Nach- 

 richten Gottingen, 186Y, p. 352; Archiv. f. Naturgeschichte, 1868, Tab. IX., figs. 1, 2. 



The genus Hypopachus resembles Engystoma, but differs in the important par- 

 ticular of the possession of a claviculus, as was first pointed out by Dr. Keferstein. 

 It is therefore to be referred to the family of the Phryniscida. 



Two strong compressed metatarsal tubercles, a sublongitudinal cuneiform and 

 subtransverse opposite it: toes slightly webbed. Width between tympanic regions 

 nearly double the length from muzzle to nuchal fold. Muzzle prominent, as long 

 as orbit, nostrils nearly terminal. Mandible with two symphyseal notches, and 

 median knob. Tongue flat, elongate ; slits of vocal vesicle large. Heel to front 

 of scapula. 



Dark brown above ; under side, limbs, and belly darker, with numerous large 

 yellowish spots. Sides anteriorly blackish-brown, which color has a serrate margin 

 above. Femora, forearms, and tarsi brown behind, with coarse yellow vermicula- 

 tions : some yellow spots behind the angle of the mouth. Length of head and 

 body 1 in. 4.5 1.; of posterior limbs 1 in. 7 1. 



Chas. N. Riotte. Mus. Smithsonian, No. 6486. 



* The Bufo simus, Schmidt, Denkschriften K. K. Akadeniie Wien, 1858, p. 251, will probably be found in 

 Costa Rica. 

 26 



