488 Zoological Society : — 



from that typical form in the great compression of its body, while 

 it does not agree so perfectly with C. elatus^ hungaricus, Nord- 

 manniy and other species with deep bodies, described and figured 

 in the ' Histoire des Poissons,' as to be referable with confidence to 

 any of them. In general form, the origin of the barbels, position of 

 the fins, and numbers of their rays, as well as in the outline of the 

 preorbitar and rest of the suborbitar scale bones, it corresponds more 

 closely with C. Jlavipinnis than with any other member of this group 

 noticed in that work ; but as Jlavipinnis belongs to the Indian Ar- 

 chipelago, a minute comparison of specimens is necessary to esta- 

 blish their identity. Hence I have designated Mr. Poole's fish by a 

 geographical appellation, and shall proceed to mention the propor- 

 tions of its various external parts. Its rays are, D. 4|18 ; A. 3|45, 

 the last one divided to the base ; P. 19 ; V. 9 ; C. 19f . 



Head a very little less than a fourth of the total length, measured 

 to the tips of the caudal lobes, or a third of the length measured to 

 near the end of the scales on the base of that fin. Height of the 

 body greatest at the front of the dorsal, and equal to a third of the 

 length measured to the tips of the central caudal rays, and conse- 

 quently sensibly exceeding the length of the head. The greatest 

 thickness of the fish is in the temporal region at the upper anterior 

 angle of the operculum, and the length of the transverse diameter 

 at that place is contained two and a half times in the height of the 

 body ; but posterior to the head, the thickness nowhere exceeds a 

 third of the height. The body thins off from the lateral line to the 

 acute edge of the back, and the sides below are also flattened in, but 

 the edge of the belly is flat to the width of the transverse insertion 

 of the ventrals, or about equal to the diameter of the eye. 



In profile the fish resembles, as we have said, C. Jlavipinnis, as 

 represented by pi. 457 of the * Histoire des Poissons,' but the scales 

 are probably smaller, there being thirty- seven in our fish on the 

 lateral line, which runs perfectly straight at mid-height throughout. 

 Snout obtuse. Barbels like those of the species just referred to, 

 but more slender and considerably shorter. Eyes close to the pro- 

 file, about a diameter and a half of the orbit apart transversely, one 

 diameter from the end of the snout, and one and three-quarters an- 

 terior to the gill-opening ; the diameter being to the length of the 

 head as 1 : 375. Length of the dorsal equal to the vertical distance 

 between the upper surface of the ventrals and the summit of the 

 back. The first ray of the fin stands midway between the end of the 

 snout and the base of the caudal ; the ventrals being attached imme- 

 diately beneath the second soft ray. The fourth stiff ray is as usual 

 robust and denticulated posteriorly, while the three shorter, gra- 

 duated, anterior stifle rays are incumbent on its base. The third 

 anal ray is similar to the fourth dorsal one, and stands directly under 

 the last two branching rays of the dorsal. 



Teeth. — The lower pharyngeal bone is on the whole crescentic, 

 but of irregular form. With its fellow it embraces the lower part of 

 the gullet in nearly a half-circle. On its interior edge there is a row 

 of about twelve small, acutely subulate teeth. At its middle there 



