373 



geographical appellatiou, and shall proceed to mention the propor- 

 tions of its various external parts. Its rays are, D. 4|I8 ; A. 3|4o, 

 the last one divided to the hase ; P. 19 ; V. 9 ; C. I9į. 



Head a very little less than a fourth of the totai 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. Ileight of the 

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

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

 ąuently 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 trausverse 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 

 aciite 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. flavipinnis, 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 likę 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 trausversely, 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 : 3"75. 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 endof the 

 snout and the base of the cavidal ; 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 stiff rays are incumbent on its base. The third 

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

 the last two branching rays of the dorsal. 



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

 but of irregular form. With its fellow it embraces the lovver 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 

 are three larger obtuse teeth, which stand one before the other in au 

 antero-posterior (or dermo-central) direction, and are contiguous or 

 incumbent on each other. The most interior one is obtusely conical, 

 with a minute centrai cusp : the next, which is slightly the largest 

 of the three, is worn on the exterior side ; and the outer one is worn 

 on both sides, but still blunt on the summit : besides these three there 

 are two much smaller and more chisel-shaped oues, abreast of the' 

 second of the larger ones, and on its mesial side. There are thus 

 five molar teeth on each lower pharyngeal bone, and a row of aci- 

 cular or subulate tooth-like rakers on its inner bordcr. 



