FISH. 



85 



the pectorals and caudal : anal with a dusky edging. In the living state there were probably 

 some bright colours, as in the B. Hocellatus of Cuvier and Valenciennes. 

 A second specimen has the fin-ray formula as follows : — 



D. 13/18; A. 21, &c. 

 This specimen also differs from the one above in having the teeth in the lower jaw not 

 quite so numerous, and the ventrals longer, equalling one-seventh of the entire length. The 

 colours are on the whole similar, but more of the yellow ground is visible above the median line, 

 and the descending fasciae beneath it are not so distinctly traced out. 



Habitat, Concepcion, Chile. 



This species is very closely allied to the B. biocellatus of Cuvier and 

 Valenciennes, from the same coasts. It agrees with it in all its essential 

 characters, and in the general disposition of the markings. It appears to differ, 

 however, in having fewer teeth ; in the anal reaching hardly so far as, certainly 

 not beyond, the dorsal, as described to be the case in that species ; in the fin-ray 

 formula ; and slightly in the colours. The B. biocellatus derives its name from 

 two ocellated spots, one beneath the last rays of the dorsal, the other upon the first 

 three rays of that fin. In the B. fasciatus here described, there appear to be 

 three subocellated spots beneath the dorsal, though the last is the most distinct, 

 besides the one upon the fin itself. The B. biocellatus was observed by M. Gay 

 at Valparaiso. The present species was taken by Mr. Darwin at Concepcion. 

 Possibly it may be a mere variety. 



2. Blennechis ornatus. Jen. 



Plate XVII. Fig. 2. 

 B. cinereo-griseus ; maculis, vel lituris paucis, infra pinnam dorsalem obsoletis, 

 pallide nigricantibus : dentibus caninis nullis : tentacidis palpebralibus duobus, 

 par vis, subfurcatis : pinna anali hand ultra dorsalem externa. 



D. 12/17; A. 20; &c— 

 Long. unc. 2. lin. 2. 



Form. — Closely resembling the last species, but rather deeper in proportion to its length, less com- 

 pressed in front, with the head more inflated about the throat and gills. Snout, profile, and 

 position of the eye, similar. Superciliary filaments scarcely longer, but rather broader and 

 more conspicuous, and cleft at the extremity. Filaments at the nostrils a little longer, but 

 very slender and delicate. Teeth similar, both in number and form. Fins and lateral line 

 exactly similar. Behind the vent a papilla not present in the last species. 



Colour. — Different from that of the _B. fasciatus, but with traces of the same markings. The 

 ground colour is cinereous grey, which almost every where prevails : there are faint traces of 

 the angulated fasciae beneath the chin, as well as of three dark stains beneath the dorsal, but 

 these last no longer deserve the name of ocellated spots. Fins, cheeks, and gill-covers, 



