Indian Deep-sea Dredging. 21 



Order C HON DUO PT E R Y G 1 1. 



Suborder PLAGIOSTOMATA. 



Family Scylliidae. 



SCYLLIUM, M. & H. 



1. ScylHum Mspidum^ sp. n. 



Head broad and depressed. Snout flat and semicircular in 

 outline, the length of its preoral portion is less than half its 

 breadth, not much more than half the distance between the 

 angles of the mouth and twice the interval between the non- 

 confluent nasal valves, each of which bears a small cirru.s. 

 Eyes large, with the small spiracles situated behind and 

 below them. A labial fold exists only at each angle of the 

 crescentic mouth. Acutely tricuspid or quincuspid teeth in 

 broadish bands in both jaws. The walls of the buccal cavity 

 and the surface of the tongue are covered with small papillie. 



The entire skin, including that which covers the flns, is 

 closely felted with spines, which are acutely tricuspid, with 

 the middle cusp the longest — exactly resembling, but on a 

 slightly smaller scale, the teeth. 



The first dorsal fin, which begins just in advance of the 

 vertical through the posterior limit of the base of the ventrals, 

 is higher than the second, but about equal to it in extent of 

 base. The anal, which terminates exactly opposite to the 

 posterior limit of the second dorsal and very near to the origin 

 of the caudal, is twice the length of either dorsal in extent of 

 base. The pectorals are wide and are much longer and 

 broader than the ventrals, which have a very oblique poste- 

 rior margin. 



Colour in life : — Uniform dull stone-grey. 



One young male specimen, 9'5 inches long. 



From Station 115, 188 to 220 fathoms. 



Suborder HOLOCEPHALA? 

 2. Callorhi/nchus?, sp. 



At Station 112, in a depth of 561 fathoms, an empty egg- 

 capsule was dredged which we suppose to be that of either 

 C/iimcera or CallorhynchuSj most probably the latter. 



It is quite fresh, but has one end broken off. It is of a 

 bottle-green colour and a parchment-like consistence, and 

 measures as it is 5| inches in length. 



It consists of an anterior ovate portion furnished anteriorly 



