1Q 2 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



the rays. Pectorals very little in advance of the ventrals, in length more than half that 

 of the head, with the second, third, and fourth rays longest. Ventrals in an exact vertical 

 line with the commencement of the dorsal, nearly equal to the pectorals, with the first 

 and second soft rays longest ; the spine rather more than half the length of the first soft ray -. 

 the last soft ray united to the body by a membrane. 

 Colours.—" Centre of each scale pale vermilion red: lower jaw quite white: a large irregular patch 

 above the pectoral bright yellow : iris red, pupil blue-black."— D. The dried skin in its 

 present state is of a nearly uniform brown. 



Habitat, Chatham Island, Galapagos Archipelago. 



I have named this species in honour of Mr. Darwin, whose researches in the 

 Galapagos Archipelago, where he obtained it, have been so productive in bringing 

 to light new forms. I have referred it to the genus Cossyphus of Valenciennes, on 

 account of the small rounded grains behind the principal teeth ; but it rather de- 

 parts from that group in not having the preopercle denticulated, and in having no 

 scales on any of the vertical fins, with the exception of a few at the base of the 

 caudal. In some respects it seems intermediate between that genus and Labrus. 

 It does not appear to be described, though it seems to approach the C. reticulatus 

 of Valenciennes in many of its characters. That species however is from Japan. 



The canines at the anterior extremity of each jaw are very conspicuous in this 

 fish, and give it at first sight much the appearance of a Dentex. 



Cheilio ramosus. Jen. 



C. nigro-fuscus, infra lineam lateralem et in ventre obscure argenteus ; pinnis pallide 

 fuscis immaculatis : corpore valde elongato : dentibus in maxilla superiore duobus 

 anticis caninis fortibus, lateralibus conicis parvis subcequalibus ; in inferiore, 

 caninis parvis, lateralibus variis inaqualibus : lined laterali ramosd. 



B. 0; D.9/13; A. 3/12; C. 12, et 4 breviores ; P. 11 ; V. 1/5. 

 Long. unc. 9. lin. 6. 



Form. — Very much elongated, with the dorsal and ventral lines nearly straight. Depth varying 

 but little, and contained nine and a half times in the entire length ; thickness not quite three- 

 fourths of the depth. Head elongated, contained not more than three and a half times in 

 the entire length, compressed, with the cheeks vertical. Snout very much produced, slightly 

 rounded at the extremity : gape reaching half way to beneath the middle of the eye. Jaws 

 scarcely protractile ; the upper one a little the longest : lips reflexed in the form of membra- 

 naceous flaps, especially the lower one, the margin of which is sinuous. Teeth ranged in a 

 single row in each jaw. Those above form a numerous, close-set, nearly even series at the sides 

 of the jaw, with two long hooked canines in front ; the lateral teeth amount to about thirty-five 

 on each side, and are small, but strong, somewhat conical, and not very sharp-pointed. In the 

 lower jaw there are two front canines, similar to those in the upper, but much smaller ; then 



