118 PROCEEDINGS OP THE ACADEMY OF 



Length of head (to opposite hinder margin tympanum) 14 | 5 times in 

 length, vent equal width of head behind. 



In. Lin. 



Length head and body 2 6-5 



" of muzzle to orbit , 4-6 



" of fore limb 1 6 



" of hand 8 



<' of hind limb 3 11-5 



" of foot 1 10 



" of tarsus „ 8 



Color above light olive, with a few small black spots on the pelvic region. 

 A black line on caathus rostralis on edge of upper lip and one round tympa- 

 num. Femur and tibia each with two narrow black cross bands. Numerous 

 black spots on groin and front of femur. Femur and tibia behind closely marbled 

 with deep black. Tarsus aud forearm black below. An indistinct yellow band 

 from nostril to axilla. 



Two specimens from the Napo or Upper Maranon. 



This species differs from the R. p a 1 m i p e s of Spi.t, according to the com- 

 plete description of Steindachner in having a considerably shorter and more 

 truncate muzzle. In the last named the nostril is equidistant between muzzle 

 and orbit, and the diameter of the latter is one half the same distance ; in tliis 

 species it is two-thirds. Our species has the thumb longer, and the black 

 marbling of the femoral regions is probably characteristic, as Steindachner 

 does not mention it. 



How it differs from the R. affinis (Rana Peters) the description of the 

 latter author does not furnish the means of determining. The latter has the 

 same obtuse muzzle. 



GYMNOPHIDIA. 



CECILIA PACHYSEMA Giiuther, Proc, Zool. Soc London, 1859, 



Two specimens from Guayaquil. They have 170 — 180 annuli respectively. 

 In the larger the eyes are distinct ; there are eight teeth on each side the 

 upper and six on each side the lower jaw, with five vomero-palatines on each 

 side. In the smaller specimen the eyes are invisible ; in both the narial 

 valvules are present on the tongue. Giinther did not find these, nor eyes, and 

 counted only 5 J 3 .] 3 teeth. He describes blue spots on the sides ; these are 

 accidental and dependent on the condition of the integment. 



SiPHONOPS ANNCLATUS Dum. Bibr«n. 



From Lower Napo or Amazon. 



The whole number of species brought by the Expedition is : 



Crocodilia 1 Ophidia 34 



Testudinata , 3 Batrachia 16 



tSauria , 19 — 



Total 73 



These are from three distinct faunal districts — those of the Western Coast, 

 the Table land of Quito, and of the Eastern Slope of the Andes. The number 

 of species found in each is as follows: 



Western , 27 



Table Land 1(3 



Eastern 44 



In the Western district are five species which occur in Brazil, and one 

 (Chelydra) which extends from Mexico to the cold regions of North America. 

 Two species of the same list occur in Middle Mexico. Of the species from 

 near Quito, four occur in the Western List, and four also found in p]astern 

 Brazil ; one is common in Middle Mexico. Of the species of the Eastern list, 

 the Sauria were chiefly obtained from points within the limits of Equador, and 

 the Ophidia from near the Brazilian frontier. Of the last, twelve are also 



[March, 



