W88.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. ;U7 



ON A NEW SPECIES OF BUFO FROM TEXAS. 



BY E. I), COPE. 

 Bufo aduncus, sp. nov. 



This very distinct species has the cranial crests of the II. lentiginosus 

 type, more especially resembling the 11. l.fowleri. lc differs especially 

 from that species in the very short, wide head, with depressed muzzle 

 overhanging the mouth; in the perfectly smooth inferior surfaces, and 

 long legs, in the coloration, as well as in various minor details. 



The head is wider than long, the width entering the length 2.25 

 times, while the length enters it 3 times. The entire profile is steeply 

 decurved, and terminates in a prominent muzzle which projects con- 

 siderably beyond the upper lip. The nostril is lateral and nearly termi- 

 nal. The anterior lip border is below a point half-way between the 

 nostril and the orbit. The maxillary bone is somewhat contracted to 

 the lip border. The prefrontal bones are obtusely angulated above, 

 but the cranial crests commence with the fronto parietal bones. They 

 are parallel and rather near together, and are \tfell distinguished every- 

 where. They form a right angle with the postorbitals, beyond which 

 they are not produced, nor is there any tendency to confluence poste- 

 riorly. A short, robust, supratympanic ridge. Orbit large; tympanic 

 disk oblique, the long axis directed upward and forward, and a little 

 shorter than the eye fissure. Skin above with small warts at consider- 

 able distances apart; below, everywhere smooth. Parotoids indistinct 

 in the specimen, their inner borders strongly divergent from the middle 

 line posteriorly. Limbs rather long. The muzzle marks the middle of 

 the fore-arm, and the distal end of the tarsus, of the extended limbs. 

 First finger longer than second. Second connected with first and third 

 lingers by a short web. Palmar tubercle larger than usual. Toes 

 closely bound together, the fourth considerably longer than any of the 

 others. The internal cuneiform tubercle has a free edge which is not 

 black; the external tubercle is small. The femur is bound to the mid- 

 dle by the skin of the side of the body. 



Measurements. 



Length of bead and body 044 



Length of head to eud of crests 0105 



Width of head at can thus oris 019o 



\\ id th of head between orbits 003 



Length of fore-leg 029 



Leugth of fore-foot 012 



Length of hind leg from ilium 061 



Length of hind foot °~ 8 



Length of hind foot less tarsus 019 



