310 lUILLKTIN :U, rMTKl) STATKS NATIONAL MIJSKUM. 



MTIIODVTKS LATKANH O-lif. 



(I'latcsr.l, liy. 1.'.; Tl, <i^'. a-J.) 

 AiiuT. Niit., Irt78, p. ISli; Itiill. T. S. Nat. Mils, No. 17, l^sO, p 'J.-.. 



Size riitlier lar^'c : frontoinirietal region lint, it.s width (M|iial to the 

 V(!rticiil (liaiiK'tcr ol'tliemeiiibniimin tyini)aiii. SUin smooth, tiial ol" tlic 

 abdomen thrown into a disk by a circular fold. Digital dilitations small 

 on all the foot. The toes have no dermal free margins; those oC Hie 

 liand are long, while those of the foot are rather short. Tin; fourth 

 linger is as large as the foroarin and e.vceeds tin' thumb, wliieh in turn 

 is considerably lou-ger than the second linger. There are t .vo ,st ion '^ 

 palmar tubercles, of which the external is divided into two by a longi 

 tudinal groove. There are two solar tubercles, and the entociineiform 

 is prominent and obtuse. The muzzle marks a point beyond the mid- 

 dle of the tarsna of the e.vteiuled hind limb. The tarsus to thi^ e ito 

 cuneiform is just half as long as the remaimler of the foot. There are 

 prominent tubercles on the inferior side of the digits of both «'.\trem- 

 ities. Tiie head is wide and Hat and tlie loreal region oblicpie. The 

 nasal region is Hat and gently <lecnrved and the \\[) projects a little beyiuid 

 the nnizzle. The long <liameter of the eye e(pnils the lengtli from its 

 border to the external nostril, whiidi is very near the einl of the muzzle, 

 and exceeds the long or vertical diameter of tlie membrannm tympani by 

 one-half of the latter. The v.idth of the tynipanic membrane is live- 

 sixths of its height. The tongue is subronnd. The ostia pharyngea are 

 large, but smaller than the choanie. Tlie vomerine teeth are in two 

 sliort, nearly transverse patches, on elevated bases, their apicu's nearly 

 in line with the posterior biirder of the choanal In younger individ- 

 uals the choanal are oblicjnely longitudinal. 



Length of head and body, .()7(J"'; length of head to line of posterior 

 borders of tympanum, axially .OL'l'" ; width at latter point, .(»3L"' ; length 

 of posterior leg, .107'". 



Color of superior surfaces brownish-gray, marked with a few large 

 brown spots with pale centers. The largest of these is on each scapular 

 region; a smaller pair is one over the extremity of oav.h sacral trans- 

 verse process. There are several on the pelvic region and above the 

 groin, one on each eyelid, and one or two on the middle of the nasid 

 region. Another covers the tympanum, ami a brown band conne<!ts 

 the orbits around the eiul of the muzzle. There are two large brown 

 spots on the lip, one below the eye and one in IVont of it. The seg- 

 ments of the limbs have l)ro;id cross-baiuls, excepting the humerus. 

 IJelow* pale, iiumacnlate. 



This species is one of the larger forms of the genus. The nasal bones 

 are in contact for most of their length, but diverge a little i)osteriorIy, 

 displaying a small portion of the etiunoid. This is not typical in 

 Lithodyte.s, but ai)i)roache.s the state of things in Epirhexis. 



This frog inhabits the clilfsof the cretacu'ous liiuestone which are 



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