Mr. G. A. Boulengev on American Batracliians. 455 



wliicli I examined tlie specimen in the Berlin Museum. I 

 further find that Ololygon or Thoropa miliaris'v&woi a Hyloid 

 but a Cjstignathoid, and that it agrees in all essential points 

 with Borhorocoetes, Bell. The diapophyses of the sacral 

 vertebra are feebly dilated, just as in B. Bibronii^ Graiji, and 

 quixensis. I append a description taken from the specimens 

 in the Berlin and Copenhagen Museums. 



Tongue subcircular, slightly nicked behind. Vomerine 

 teeth in two short transverse series on a line with the poste- 

 rior border of the choanse. Snout rounded^ as long as the 

 diameter of the orbit ; canthus rostralis obtuse, loreal region 

 concave ; nostril much nearer the end of the snout than to the 

 eye ; eye large ; interorbital space as broad as the upper 

 eyelid ; tympanum very distinct, two thirds or three fourths 

 the diameter of the eye. Fingers moderate, first slightly 

 longer than second ; toes moderate, quite free, not fringed ; 

 subarticular tubercles moderately developed ; two metatarsal 

 tubercles, inner elliptical, outer round. The tibio-tarsal 

 articulation reaches the tip of the snout or a little beyond. 

 Skin smooth, with a i^w glandular warts on the sides ; a 

 strong fold from the eye to the shoulder. Pale greyish or 

 brownish above, with darker marblings ; a large triangular 

 spot, base forwards, between the eyes ; a blackish line along 

 the canthus rostralis and temporal fold ; hind limbs with dark 

 cross bars ; hinder side of thighs dark brown, with yellowish 

 spots ; lower parts pale brown, throat and belly dotted with 

 yellowish. 



From snout to vent 45 millim. 



Cystijjnathus hyJodes, described in the same paper with 

 C. discolor by Keinhardt and Liitken, is based on young 

 specimens of Leptodactylas 2)Qntadactijlus. 



Biifo Luetheniij sp. n. 



Intermediate between B. vaUiceps^ Wiegm., and B. granu- 

 Io.yus, Daud. Crown deeply concave, witli prominent ridges, 

 viz. a canthal, a preorbital, a supraorbital, a postorbital, a 

 parietal, and an orbito-tympanic ; parietal ridges short, 

 oblique, directed inw^ards ; snout rounded, not prominent ; 

 interorbital space at least as broad as the upper eyelid ; tym- 

 panum very distinct, two thirds or three fifths the diameter 

 of the eye. First finger considerably longer than second ; 

 toes half-webbed, with single subarticular tubercles ; two 

 small metatarsal tubercles ; no tarsal fold. The tarso-meta- 

 tarsal articulation reaches the tympanum or the eye. Upper 

 parts with small irregular warts j parotoids very small, oval, 



