BATRACHIA FROM ARGENTINA 249 



dirty white, more or less profusely speckled witli i)rown. Male 

 with an external giilar vocal sac. 



From snout to vent 45 millim. 



Five male specimens. 



Allied to //. nasica, but habit stouter, skin more warty, and 

 tympanum larger. 



15. Hyla nana, sp. n. (PI. II. fig. 2). 



Tongue sul)circular, entire, and slightly free behind. Vomerine 

 teeth in two small transverse groups, close together, between 

 the clioana3. Head moderate, as long as broad ; snout rounded, 

 shorter than the diameter of the orbit ; nostril nearer the end 

 of the snout than the eye; loreal region slightly concave, nearly 

 vertical ; interorbital space l)roader than the upper eyelid ; a 

 frontoparietal fontanelle ; tympanum distinct, about one third 

 the diameter of t'/e eye. Fingers witii a distinct rudiment of 

 web; toes nearly entirely webbed; no projecting rudiment of 

 poi lex ; disks nearly as large as the tympanum ; subarticular 

 tubercles well developed ; no tarsal fold. The tibio-tarsal arti- 

 culation reaches the eye. Skin smooth , granulate on the belly 

 and under the thighs. Pinkish or pale vinaceous brown above, 

 with two series of purplish dots or two purplish lines along 

 the back ; a sharply - defined dark purplisli band on each side , 

 from the loreal region to the groin ; upper surface of thighs 

 finely powdered with purplish ])rown ; no cross-l)ands on the 

 limbs; lowers surfaces white. Male with a large external gular sac. 



From snout to vent 23 millim. 



Six specimens , males and females. 



This diminutive species is allied to //. bipunctata , Spix, and 

 If. minuta, Ptrs., from which it is distinguished by the shorter 

 web between tiie fingers , the smaller tympanum , the shorter 

 limbs, and the coloration. 



l'i. Phyllomedusa hypochondrialis, I)Am). 



