252 CTSIieNATHIDiE. 



17. BORBOROC(ETES. 



Cystignatliiis, sp., Bum. Sf Bibr. viii. p. 407; CHinth. Cat. p. 31. 

 Borborocoetes, Bell, Zool. Beagle, Eept. p. 30 ; Cope, Nat. Hist, Rev. 



1866, p. 113. 

 Eusophus, Cope, I. c., and Journ. Ac. Philad. (2) vi. 1866, p. Oo. 

 Borborocoetes, sp., Cope, Journ. Ac. Philad. (2) vi. p. 94. 

 Caootus, GUmth. Pi-oc. Zool. 8oe. 1868, p. 482. 

 Phrynopiis, Petei-s, Mon. Berl. Ac. 1873, p. 416. 

 Oreobates, Espada, Ann. Soc. Esp. i. p. 86. 



Pupil horizontal. Tongue subcircular, entire or slightly nicked, 

 and free behind. Vomerine teeth. Tympanum more or less distinct 

 or absent. Fingers free ; toes free or nearly so, the tips not dilated. 

 Outer metatarsals united. Omosternum cartilaginous ; sternum a 

 cartilaginous plate. Terminal phalanges simple or slightly 

 bifurcate. 



W. S. America. 



Sijno^sis of the Species. 

 I. A tympanum. 



1. Vomerine teeth between the choanae. 



Subartioular tubercles very strong 1. nodosus, p. 253. 



Subarticular tubercles moderate ; vomerine 



teeth in tvro oblique series commencing 



on a level with the hinder edge of the 



choanse ; toes not fringed ' 2. roseits, p. 253. 



8ubartioula,r tubercles moderate; toes 



fringed 3. Mdalgoi, p. 253. 



Subarticular tubercles small ; fingers and 



toes slender 4. tceniatiis, p. 254. 



2. Vomerine teeth behind the choanse. 



First finger not longer than second ; nostril 



nearer the tip of the snout than the eye. 5. grayi, p. 254. 

 First finger not longer than second ; nostril 



equally distant from the eye and the tip 



of the snout 6. bibronii, p. 255. 



First finger longer than second ; nostril 



much nearer the tip of the snout than 



the eye 7. quixensis, p. 255. ' 



Habit very stoiit 8. jpervamix, p. 255. 



II. No tympanum. 



Snout as longasthegreatestorbital diameter. 9. maeulaivs, p. 256. 

 A conical tubercle on the tibio-tarsal 



articulation 10. cakaratus, p. 256. 



Snout shorter than the greatest orbital 



diameter 11. coppinfferi, p. 257. 



