456 Gh E. Dobson — On a new Genus of JR/nnolophidce, Sfc. [No. 4, 



triangle. The form of the ear, which is difficult to describe, is 

 very well given in the plate accompanying this paper. 



The nasal appendages are very complicated ; the anterior portion 

 of the nose-leaf is horse-shoe shaped, consisting of two laminae, 

 the upper overlying lamina deeply emarginate in front, the oppo- 

 site sides of the emargination turned upwards and supporting the 

 anterior portion of a broad, flat, longitudinal crest which ends in a 

 triangular head above and between the nasal orifices ; these open- 

 ings are placed at the bottom of a considerable depression, are 

 about .05 in. apart, and between them a very narrow raphe connects 

 the apex of the triangular termination of the central, horizontal, 

 longitudinal crest with the base of the hinder erect nose-leaf ; this 

 hinder portion arises from a thick root behind the nostrils, its base 

 is hollow, containing a single cell, the entrance to which is guarded 

 by a lanceolate process of membrane ; above this opening, the nose- 

 leaf terminates by forming three projections of which the central 

 is needle-shaped, very slightly longer than the others, and its base 

 forms the upper boundary of the entrance to the central cell ; the 

 lateral projections are shaped differently, rising on either side of 

 the base of the central projections by narrow pedicels they soon 

 become expanded by the increasing convexity of their outer sides, 

 which converging above form with the inner margins acute termi- 

 nations. 



On each side of the hinder nose-leaf are six cells, of which one 

 is situated behind immediately above the eye occupying the posi- 

 tion of the minute pores observed in nearly all the species of Dr. 

 J. E. Gray's second group of Rhinolophidce ; in front of the eye two 

 shallow, but well defined, cells are formed by the folds of mem- 

 brane external to the horse- shoe, of which that nearest the eye has 

 for its posterior wall the raised margin of the eyelid ; this cell, 

 like that above the eye, is concealed by the hair of the face, and is 

 not shown in the accompanying illustration of the animal's head. 



The total number of cells is therefore thirteen, of which three 

 on each side are formed by the erect nose -leaf, and one occupies 

 the centre of its base. * 



The entrance to this central cell appears to be normally closed, 

 at least so it is in all the spirit specimens, but may be readily 



