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Show 100 ZOOLOGY OF TilE VOYAGE OF TilE 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 Ct~vier and Valenc~ennes, in their descriptio_n of the B. porosissimus; but in addition to those whtch have been pomted out by them, there ts 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 preopcrcle ; 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. D. 2-36; A. 33; C. 12, &c.; P. 20: V. I/'1.. Length 9 inches. CoLOUR.-" 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. porosissimzts 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. FAMILY .-LABRI OlE. CossYPHUS DARWINL Jen. PLATE XX. C. corpm·e elongato-ovali; capite grandi, fronte elevato, t·ostro ex /we declivi: camms qua.tuor fortibus ad apicem utriusque maxillce, ad angulos m·is nullis; dentibus later~ lzbus conicis; interius, ad latera palati, g1·anis plw·imis rninutis obtusis: preoperculo, hmbo excep~o,_ operculo, et inte1·operculo, squamatis ; preopm·culo mm·gine integro : t·ostro, _maxzllts,. et suborbitalibus ante oculos, nudis: linea laterali subrecta : pinna dOJ·s~l't parte spznosa !tumili, spinis ad apices laciniatis; molti, lteic respondente an~l't, duplo altiore, sub-acuminata: caudali cequali, solUm mdiis exterioribus alus paulo longioribus. D. 12/10; A. 3/12; C. 14, &c.; P.l7; V. t/5. LoNG. unc. 19. |