44 PROCEEDINGS OF THE ACADEMY OF 



sparsely tuberculous. Three external digits one-fourth webbed. Heel reaching 

 a little beyond orbit. When the markings of the upper surfaces are not obso- 

 lete, there is a brown band converging from the supercilium towards one upon 

 the other side, then diverging, and becoming broken up on the iliac region. 

 Lateral and posterior femoral regions marbled ; extremities banded. 



Length from muzzle to posterior margin of casque 16"';* least breadth 

 between orbits 8"'. From casque to vent 4" 5'"; anterior extremity 3" 5"'; 

 posterior extremity 8 r/ 8 fff . 



Habitat. Cuba. From Prof. Poey. Mus. Smithsonian, Nos. 6265-6. Academy 

 Natural Sciences. 



T. o v a t u s Cope, sp. nov. 



Length from extremity of muzzle to posterior border of casque equal to 

 breadth from one os maxillare to the other at orbits. Head depressed, espe- 

 cially anteriorly ; maxillary outlines much rounded, not acuminate. Muzzle 

 rounded in profile. Canthus rostralis strong, but little concave, far within 

 maxillary border ; loreal region grooved. Posterior border of casque extend- 

 ing nearly from tympanum to tympanum, slightly doubly-convex. Eyes very 

 prominent, more than twice the extent of the tympanum. Internal nares larger 

 than ostia pharvngea. Tongue emarginate. Vomerine teeth between nares, in 

 two postero-externally divergent series. Digits of anterior extremity nearly 

 half-webbed. Heel reaching nearly to end of muzzle. Skin of upper surfaces 

 nearly smooth. 



Length from end of muzzle to posterior border of casque 1 // 7 /// . Least 

 width between orbits 7 /// . Length from casque to vent 4 // 5 //V ; of anterior 

 extremities 3" 6'" ; of posterior extremities 8" 5'". 



Above deep brown, beneath immaculate ; upper faces of extremities indis- 

 tinctly barred; lateral and posterior femoral regions spotted, and marbled with 

 brown. 



Habitat. Hayti, near Jeremie. Dr. Weinland's Collection in Mus. Compara- 

 tive Zoology, Cambridge. 



Perhaps this is the T. dotninicensis Gthr., which does not appear to be the 

 species so named by Dumuril and Bibron. 



T. marmoratus Hum., Bibr. 



Head short; maxillary outline broadly oval. Length from end of muzzle to 

 posterior border of casque less than from one alveolar margin to the other at 

 orbit. Frontal region concave, especially in old individuals. End of muzzle 

 nearly vertical in profile. Casque extending from tympanum to tympanim in 

 fully developed individuals; the posterior outline openly emarginate or con- 

 cave. Canthus rostralis convergent, concave, but little elevated, with a more 

 or less obsolete furcation or process, one-third of its length anterior to the 

 orbit. Loreal region very oblique, concave. Orbits twice the extent of tym- 

 panum. Series of vomerine teeth either transverse, arcuate or oblique con- 

 verging anteriorly. Posterior nares moderate. Tongue not or scarcely emar- 

 ginate. Skin of upper surfaces coarsely, usually closely, tuberculous. Two 

 external digits of anterior extremity very slightly palmate. Heel of extended 

 extremity reaching from anterior to the orbit to near end of muzzle. 



Length from end of muzzle to middle of posterior margin of casque (in 9 

 from New Providence) 22 /// . Breadth between orbits 12 /// ; length from casque 

 to vent 5 7/ 6 /// ; of posterior extremity ll" 5 /// . Length of bead and body 

 in (^ (from New Providence) 4 // G /// . 



Specimens of this species in alcohol are either rufous brown, varied with 

 dark brown, blackish brown, ashy, with confluent brown spots, or olivaceous, 

 with close brown or black reticulations. 



Habitat. Cuba. De La Sagra, Poey. New Providence, Wood, Bryant. Hayti, 

 Weinland, Cuming, ?Ricord. Jamaica, Gosse, Adams. Mus. Academy Nat. 



* The centimetre and millimetre are used in this paper. 



[Mar. 



