100 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
Skin perfectly naked. The lines of pores, which are very numerous about the head and 
body, run in the exact directions laid down by Cuvier and Valenciennes, in their description 
of the B. porosissimus ; but in addition to those which have been pointed out by them, there is 
one commencing at the nostrils, and passing underneath each eye, thence ascending a little 
behind the eye to descend again by the margin of the preopercle ; another directed transversely 
across the cheek, connecting the former with the row that passes along the edge of the lower 
jaw: this transverse row, if continued upwards, would form a tangent to the posterior part of 
the orbit. All the lines of pores are furnished with very minute cutaneous appendages, 
similar to those already spoken of above, as fringing the edges of the jaws. 
IDS 2364, A 33 ©. 2. Scr) boos Ve We 
Length 9 inches. 
Cotour.—* Above purple-coppery; sides pearly ; beneath yellowish, with silver dots in regular 
figures; iris coppery."—D. The silver dots alluded to by Mr. Darwin, are the lines of pores. 
There are two longitudinal dark lines on the dorsal, the uppermost serving as an edging: 
the anal also is edged in the same manner, especially posteriorly. 
Habitat, Bahia Blanca. 
This species was found by Mr. Darwin cast up on the beach at Bahia Blanca, 
where he states that it is not uncommon. It approaches so closely the B. 
porosissimus of Cuvier and Valenciennes, that I dare not consider it as distinct 
without comparison. Yet it differs from their description of that species, in 
having four vomerine teeth, instead of two; in having six more rays in the anal 
fin; and in having the additional lines of pores above indicated; though these 
last may have been accidentally left unnoticed. It requires the examination of 
more specimens to determine whether these differences result from a difference 
in species or not. 
Famity.—LABRID. 
Cossypnus .Darwint. Jen. 
PuaTteE XX. 
C. corpore elongato-ovali ; capite grandi, fronte elevato, rostro ex hoc declivi: caninis 
quatuor fortibus ad apicem utriusque mawille, ad angulos oris nullis ; dentibus late- 
ralibus conicis ; interiis, ad latera palati, granis plurimis minutis obtusis: preoperculo, 
Limbo excepto, operculo, et interoperculo, squamatis ; preoperculo margine integro : 
rostro, maxillis, et suborbitalibus ante oculos, nudis: lined laterali subrectd : pinnd 
dorsali parte spinosa humili, spinis ad apices laciniatis ; molli, heic respondente 
anali, duple altiore, sub-acuminata: caudali equali, soli radiis exterioribus 
aliis paulo longioribus. 
D. 12/10; A. 3/12; C. 14, &c.; P.17; V. 1/5. 
Lone. unc. 19. 
