22 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



2. Pinguipes Chilensis. Vol. 



Pinguipes Chilensis, Cuv, et Vol. Hist, des Poiss. torn. ix. p. 338. 



F 0R m. — More slender and elongated than the last species. Depth nearly six and a half times in 

 the entire length. Head four times and a quarter in the same. Eyes high, a little hefore the 

 middle, or with the distance in front to the end of the snout not equalling that behind 

 measured to the posterior part of the opercle ; their diameter nearly six times in the length of 

 the head ; the interval between them nearly two diameters. When the mouth is closed, a 

 vertical from the posterior part of the maxillary forms a tangent to the anterior part of the 

 orbit. Lips not so thick and fleshy as in the P.fasciatus ; but the teeth almost exactly similar. 

 Tongue much larger, occupying nearly the entire platform of the mouth. Branchial membrane 

 much more deeply notched, the notch reaching as far as the anterior extremity of the interoper- 

 cle. Preopercle with the ascending margin nearly vertical. Opercle with two small flat spines, 

 the lower one rather more developed then the upper. Scales and lateral line as in the P. 

 fasciatus. Pectorals similar. Ventrals attached entirely in front of the pectorals, though not 

 much in advance ; fleshy, but perhaps rather less so than in the P.fasciatus : in neither species 

 do they pass beyond the pectorals, or indeed reach quite so far. The other fins exactly similar. 

 The dorsal, however, has one spine less, and one soft ray more. The anal, also, has one soft 

 ray more. 



B. 6; D. 6/28; A. 1/25; C. 17, &c. ; P. 19; V. 1/5. 



Length 11 inches. 



Colour. — (In spirits.) Back and sides deep brown, with the exception of two rows of pale spots 

 along the sides, very faint and ill-defined. Underneath altogether paler. The dorsal and anal 

 appear to have been bluish, with the basal portion of each fin pale, but without any edging of 

 white above. Inside of the ventrals blue ; pectorals the same, but paler. The caudal shows 

 some trace of a dark round spot on the base of the upper lobe. Mr. Darwin's notes, with re- 

 spect to the colour in the living fish, only state " fins dark." 



Habitat, Valparaiso, Chile. 



This species, which was procured by Mr. Darwin at Valparaiso, is probably 

 the same as the P. Chilensis of Valenciennes, obtained by M. Gay on the same 

 coast. But the description in the " Histoire des Poissons" is brief, and notices 

 very little besides the colours, which accord tolerably well. Mention, however, 

 is made of a second spine in the anal fin, which certainly does not exist in the 

 above specimen, though a very careful examination was made in search of it. 

 There is also one soft ray more in this fin, as well as in the dorsal, in the fin-ray 

 formula in that work. 



This species is very distinct from the P.fasciatus last described, and does 



