Mr. G. A. Boulenger on new Brazilian Batrachians. 189 



Greyish above, with two parallel darker bands along the 

 back, more distinct in the young than in the adult, widening 

 anteriorly and sometimes uniting on the interorbital region ; 

 upper surfaces more or less abundantly dotted with black ; 

 a dark line on each side from the end of the snout to the 

 shoulder, passing through the nostril and the eye and above 

 the tympanum ; thighs and lower surfaces colourless. Male 

 with a large external gular vocal sac. 



From snout to vent 23 millim. 



Several specimens from Lages, Santa Catharina, collected 

 by Hr. Michaelis. 



In the number of the ' American Naturalist ' for January 

 1888 (p. 80) the frog recently described by me as Hyla Gopii 

 is identified with H. arenicolor^ Cope. If this identification is 

 correct, I can only say that 1 am not to blame. H. arenicolor^ 

 Cope, is a mere name, proposed to replace that of affinis, 

 Baird, preoccupied ; on referring to the latter author's descrip- 

 tion, I find his H. affinis differs from my H. Copii in the 

 following important points : — 



H. affinis. — " Tympanum two thirds the size of the eye. 

 Web of hand extending only to the third joint of the second 

 finger." [The figure represents the fingers distinctly webbed 

 at the base.] " No vermiculation on anterior and posterior 

 faces of hind legs." {Baird.) 



H. Copii. — Tympanum hardly one third the size of the 

 eye. Fingers without web. Hinder side of thighs mottled 

 or vermiculated with brown. 



As the type specimen of H. affinis = arenicolor is preserved 

 in the United States National Museum, it is to be hoped that 

 further information may be forthcoming to settle the question. 



SipJionops Hardyi. 



Teeth small, subequal. Snout rounded, moderately promi- 

 nent, about as long as the distance between the eyes ; latter 

 distinct, tentacle in front of and close to the eye, neither above 

 nor below. 104 circular folds, all complete. Uniform 

 blackish. 



Total length 145 millim. ; greatest diameter of body 4 

 millim. 



Well distinguished from S. annulatus by the more slender 

 body, the position of the tentacle, and the uniform coloration, 

 the annuli not being lighter. 



Porto Real, province of Rio Janeiro. A single specimen 

 was obtained by M. F. Hardy du Dreneuf. 



