NATURAL SCIENCES OF PHILADELPHIA. 47 



nent tubercles on antebrachium, heel and tarsus. Abdominal areolations rigid, 

 prominent. 



Dimensions of a $. From end of muzzle to convexity of posterior border of 

 casque 2" 9"'. Breadth of frontal region 1" 4'". Length from casque to vent 

 6" 5"'; of anterior extremity 5"; of posterior do. 12" 7"'. 



Color in spirits, above uniform olivaceous ; lateral and internal femoral re- 

 gions marbled; extremities above banded with brown; mandibular region deli- 

 cately brown-marbled. A dark anal spo'. 



Habitat. Jamaica. Drs. Gosse, Betton, Adams. Mus. Academy Natural 

 Sciences ; Amherst College, Mass. 



It is altogether probable that this is the species described by Mr. Gosse, in 

 his work previously mentioned, under the name adopted. His description, re- 

 lating principally to coloration, is not conclusive towards any identification. 



Its affinities are altogether with the lichenatus, both being peculiar in 

 the elevation of the posterior margin of the casque into a transverse crest. It 

 differs in the greater elevation of this crest, the more elongate proportions of 

 the cranium, the angulation of the canthus rostralis and less prominence of 

 eyes, besides minor points. 



Hyla Laur. 



Hyla miotympanum Cope, sp. now 



Skin of superior surfaces smooth ; gular region areolate ; a gular and ante- 

 pectoral fold, also one across the axilla; another running from inferior ante- 

 rior face of thigh obliquely upwards to the iliac region. A fold across extremity 

 of forearm, above carpus. Outer fingers one-fourth, toes extensively, webbed ; 

 palettes larger than tympanum ; posterior extremities slender ; the heel reaches 

 the end of the muzzle. Muzzle broadly rounded ; canthus rostralis short, 

 loreal region oblique. Nostiils vertical. Byes very prominent, six times the 

 extent of the small tympanum. Tongue slightly emarginate. Vomerine teeth 

 in two elongate fasciculi between internal nares, presenting an obtuse angle 

 posteriorly. 



Length from muzzle to upper border of tympanum 1 // ; breadth of jaws 

 opposite middle of orbit 1 // . Length from tympanum to vent 1" 3 /// ; of an- 

 terior extremity 1 // 9 /// ; of posterior extremity 5 // \ ,ff . 



In spirits, above purplish ash, (probably green in life,) with or without a 

 few lighter specks, and indistinct darker reticulations. Extremities paler, not 

 barred ; alight border from heel to digits, another bounding superiorly asubanal 

 spot. Under surfaces yellowish ; superior labial border and lateral stripe 

 bright yellow, the latter sometimes not well separated from the abdominal 

 Bhade. 



Habitat. Near Jalapa, Mexico. Obtained by Sr. R. Montes de Oca. Mus. 

 Smithsonian, (No. 6311,) Mirador, Dr. Sartorius. 



A species to be compared with rhodopepla Othr., rubicundula 

 R. and L., luteola Burm., molitor Schm., but differing from all in the 

 minuteness of its tympanum. In viridis the tympanum is larger, the head 

 is more elongate and the hands less palmate, besides the presence of a yellow 

 band on the tibia. 



Hyla p a 1 1 i a t a Cope, sp. nov. 



All the digits of posterior extremity palmate to penultimate phalanx ; of the 

 anterior the three external are one-third webbed. Metacarpus of inner digit 

 with a large tubercle. Tympanic disc one-sixth the size of the eye. Vome- 

 rine teeth in a short uninterrupted series behind posterior margin of internal 

 nares. Tongue oval, nicked. Muzzle prominent, truncate ; loreal region not 

 concave. From nostril to orbit equal diameter of orbit, and is less than the 

 width of the interorbital space. One vocal sac. Skin smooth above, not 

 granulated on the gular region. The end of the tibia reaches middle of orbit 

 when the limb is extended. 



1863.] 



