388 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



ficatious. Terminal phalanges simple. No vomerine teeth. Tongue 

 simple, oval. 



Three species of this genus are known, the rare H. oxyrJiinns and the 

 H. variolosus, which, with its subspecies Inguinalis Cope, ranges from 

 Costa Eica to Guatemala on the east, and Michoacan on the west. A 

 new one is now added. The species differ as follows: 



Head oue-sixth total length; toes with a short web; no lateral band. 



H. variolosus Cope. 



Head one-eighth total length ; toes without trace of web; heel to hnmerns; no lat- 

 eral band R. cuneus Cope. 



"Toes with a slight web ; heel to end of muzzle; a blackish lateral band;" Boulen- 

 ger S. oxyrhinus Boul. 



HYPOPACHUS CUNEUS Cope. 



3 ^ " " ^ 



Fig. 98. Hypopachus cuneus. San Diogo, Tex. ; \. 



Head small; body large; limbs short. Muzzle scarcely longer than 

 diameter of eye, projecting a little beyond mouth border. A dermal 

 groove across head at posterior borders of eyelids, and one from below 

 ])OSterior canthus of eye to shoulder. Another across thorax from the 

 inferior origin of one humerus to the other. Skin everywhere smootb. 

 Tympanic drum invisible. When the anterior limb is extended the end 

 of the fore-arm reaches the end of the muzzle. The distal end of the 

 tarsus reaches the anterior base of the humerus, and tlie end of the 

 second toe reaches the end of the muzzle when the hind limb is ex- 

 tended. The third finger is rather elongate, and the lengths of the fin- 

 gers are in order, beginning with the shortest, 1-2-4-3, tlie second and 

 fourth being equal. In the posterior foot the lengths are, beginning 

 with the shortest, 1-2-5-3-4, the second and fifth being about equal, 

 and the third a good deal shorter than the fourth. The palmar tu- 

 bercles are not very distinct. At the distal end of the tarsus there are 

 two large, subequal, sharp-edged tuberosities. The edge of the internal 

 is oblique, that of the external transverse. Distinct small tubercles 

 under the articulation of the phalanges. The femur is almost entirely 

 inclosed in the integument of the body. 



The tongue is large, and forms an elongate flat ellipse. The interual 

 nostrils are anterior, and are a little further apart than the external 

 nostrils. The latter are nearly terminal in position. 



The color is light brown, or grayish-browu, sometimes tinged with 

 olive, and there is generally a pale median vertebral line. There is a 

 wide baud on each side of a paler tint, extending from the orbit to near 



