10 Fraser — On a partially ossified Nasal Septum [No. 1, 



Hah. — Slopes of the Eastern Burrail at about 6,000 ft., tolerably 

 abundant. 



A very near ally of D. Jatingana, G-A., from wbicb it is readily dis- 

 tinguisbable by the situation and reduced size of the colurnellar process, 

 its elongate flat-sided form, and very different sculpture. 



EXPLANATION OF PLATE IV. 

 Fig. 1. Craspedotropis fimbriate*,. With, magnified drawing of the leaf-like fringe. 

 „ 2. Alycmus sculpturus. 

 ,, 3. ,, crispatus (basal side). 



„ 4. Diplommatina Burtii. 



5. „ Sherfaiensis, var. 



6. 



>) 



tumicla, type form, 



7. 

 8. 



>> 



„ var. 

 convoluta. 



IV. — Note on a partially ossified Nasal Septum in Ehinoceros Sondaicus. 



By 0. L. Fbasee. 



(Received 1874;— Eead March 3rd, 1875.) 



(With Plate V.) 



Whilst cleaning the skull of a SMnoceros Sondaicus lately obtained by 

 me in the Sunderbuns, I was much surprised to find a partially ossified 

 septum narium — a structure which I had hitherto looked upon as solely 

 characteristic of the fossil Rhinoceros and for any mention of which in a 

 recent species I have looked in vain ; indeed Cuvier (Oss. foss. Yol. 2, p. 26,) 

 distinctly states that no such thing occurs in the recent ones. 



The specimen . in question was a female 5 feet 6 in. high and, though a 

 fully adult one (as the size of a foetus she was carrying proved), from the 

 unworn condition of her teeth she certainly was not old, so that the ossi- 

 fication could not be merely the result of age, as is so very often the case 

 with the cartilages and even the tendons of mammals, birds, &c. 



On looking at some other skulls, I found in two old specimens (one from 

 Java, and the other the locality of which is unknown) traces of where such 

 a structure might have been but had been destroyed either in cleaning or 

 in some other way. In a third (not so old as the two preceding but still 

 an older one than mine) there is distinct evidence of an exactly similar 

 formation to that I am about to describe, though the anterior bone has 

 been lost and part of the posterior portion broken away ; this specimen 

 was also from the Sunderbuns. 



In some 6 or 7 skulls of It. indicus that I examined there was not the 

 slightest indication of it, the vomer being quite distinct, and there being no 

 roughened articulating surface on the inner side of the nasals. 



