1898.] BATRACHIATf COLLECTION- IST THE BKITISH MUSEUM. 481 



truncate, subtriangular, their diameter nearly equalling that of the 

 tympanum ; toes free, the disks a little smaller than those of the 

 fingers ; subarticular tubercles moderately large, very prominent ; 

 two small metatarsal tubercles. The tibio-tarsal articulation 

 reaches the tip of the snout. Skin smooth above and beneath. 

 Grreyish above, speckled with blackish, white beneath. 



From snout to vent 36 millim. 



Two specimens from Atoyac, State of Vera Cruz. Presented 

 by Dr. Alfred Duges, after whom the species is named. 



6. BOEBOBOCCETES MEXICANUS. (Plate XXXIX. fig. 2.) 



Tongue oval, entire. Vomerine teeth in two rounded groups 

 behind the level of the choanse. Snout rounded, a little longer 

 than the diameter of the orbit ; nostril nearer the end of the snout 

 than the eye ; canthus rostralis rounded ; interorbital space a little 

 broader than the upper eyelid ; t\'mpauum distinct, two thirds the 

 diameter of the eye. Fingers moderate, first extending beyond 

 second ; toes moderate, free ; subarticular tubercles of fingers 

 and toes very strong ; a large and very prominent, compressed 

 inner metatarsal tubercle and a small, rounded outer metatarsal 

 tubercle. The tibio-tarsal articulation reaches between the eye 

 and the nostril. Skin smooth. OliAe-grey above, with small 

 darker markings ; a dark cross-bar between the eye ; a dark lumbar 

 marking ; a dark streak on each side of the head and body, not 

 reaching the groin ; lips with vertical dark bars ; limbs with dark 

 cross-bars ; lower parts white ; sides of throat speckled with brown. 



From snout to vent 37 milhm. 



Two specimens from Hacienda el Florencio, Zacatecas, Mexico; 

 collected by Dr. A. C. Buller. 



7. Hyla miceocephala. (Plate XXXIX. fig. 3.) 



Tongue circular, shghtly nicked, and moderately free behind. 

 Vomerine teeth in two small round groups between the choanae. 

 Head small, a little broader than long ; snout rounded, as long 

 as the diameter of the orbit ; canthus rostralis distinct ; loreal 

 region slightly obHque ; interorbital space broader than the upper 

 eyelid ; tympanum distinct, half the diameter of the eye. Fingers 

 one-third webbed ; no projecting rudiment of pollex ; toes nearly 

 entirely webbed; disks quite as large as the tympanum; sub- 

 articular tubercles moderate. The tibio-tarsal articulation reaches 

 between the eye and the tip of the snout. Skin smooth above 

 and on the throat, granular on the body. Pale brown above, 

 uniform or with scattered dark brown dots ; a dark brown streak 

 on each side of the head and belly, passing through the eye and 

 edged with whitish above; thighs pigmentless; white beneath. 

 Male with a large external vocal sac. 



From snout to vent 28 millim. 



Two specimens, male and female, from Bebedero, Costa Eica ; 

 collected by Mr. TJnderwood. 



Nearest allied to H. uranochroa, Cope. 



