Cope ] ^4: [March 18, 



M. 



Length of head and body 032 



" " " to posterior edges of tympana 007 



Width " " at " " " " 007 



Length of fore leg 014 



" " foot 006 



" hind leg 0305 



" foot 015 



" " less tarsus 0098 



This species agrees in most of its characters with the D trivittatus Spix., 

 but is very much smaller, not measuring half its linear dimensions. As 

 the specimens are, according to Mr. Smitli, adult, they must be regarded as 

 specifically distinct. It is also related to the 2). 7ia7i?ie/i of Boulenger,* 

 but diflers in the considerably shorter posterior limbs. 



The singular manner in which this species carries its larvae is described 

 by Mr. Smith in the American Naturalist, for April, 1887. The latter 

 are carried, closely packed, embedded in a coaling of gelatine, on the 

 back of the parent. This constitutes a method of nursing distinct from 

 any of those enumerated by Mr. Boulenger in his recently published 

 table. 



It approaches nearest the habit of the Pipa monstrosa, which also carries 

 the young on the back. But, as is well known, the skin itself and not a 

 gelatinous secretion, encloses the eggs and retains the young until the 

 metamorphosis is complete in that species. 



Several larvae accompany one of the specimens of this species, which 

 are stated by Mr. Smith to have been adhering to its back when it was 

 taken. They do not resemble those of Pipa, but rather those of a Rana 

 or Bufo. The branchial opening is on the left side, and no limbs are 

 developed. The tail is long. The mouth is not peculiar. The decurved 

 lower lip is present, and is furnished with two transverse series of bristle- 

 teeth. A single series of the same extends entirely across the superior 

 labial region, above the upper horny jaw. The papillae are rather long, 

 and extend all round the inferior lip, and for a short distance on each- 

 side at the lateral end of the upper lip ; the series presenting an entering 

 angle opposite the mouth. 



This species is described and flguredf by Steindachner in the Verhandl. 

 der k. k. Zoolog. Botan. Ges. in Vienna, 1864, p. 258, who refers it to the 

 D. tridittitus {" nigerrimus"), under the impression that the specimens 

 before him are not adult. He states that the latter were labeled Den- 

 drobates braccatus, by Dr. Fitzinger. This name is not adopted by 

 Steindachner, but I use it in order not to simplify the synonymy. 

 18. Prostherapis brunneus, sp. nov. 



Viewed from above the end of the muzzle is rounded, but it is angu- 

 lated at the nostrils. In profile it is vertical, as is also the loreal region. 



• Proceeds. Zool. Soo. London, 1883, p. 636. PI. Ivii, fig. 4. 

 t Plate xlii, flg. 2. 



