2. CAKANOICllI UYS. 421 



the specific unity of Caraii.v trachurus. There are several strong 

 crests on the upper sui-face of tlie skull : the occipital crest occupies 

 all the length of the skull, from the anterior extremity of the frontal 

 bones to the occipital joint ; a pair of lower crests on each side of 

 the crown, the interior proceeding from the superciliary margin, the 

 exterior from the posterior angle of the orbit. The jiraefrontals are 

 small, and situated in a depression before the orbit. The basal por- 

 tion of the brain-capsule is neither compressed nor swollen. The 

 maxillary becomes gradually wider behind, and has a narrow sup- 

 plcmentar}' bone which occupies its whole superior margin. The 

 maxillaiy is slender, with a triangular prominence behind, and with 

 the posterior processes rather short. The mandibula has a rudi- 

 mentaiy nuiciferous channel, with four pores leading into it ; there 

 is a wide free space between the dentary and articular bones. The 

 prteoperculum is rounded, vnth the space between the edge and the 

 fiat interior lidge very wide ; many irregular pores indicate the pre- 

 sence of a rudimentary channel in its interior ; the lower limb is 

 shorter than the posterior. The operculum is nearly twice as high 

 as wide, and has a small notch posteriorly and another superiorly. 

 The intcro{)erculum is larger than the suboperculum. 



The turbinal bones are compressed tubes of moderate length ; the 

 praeorbital is i-ather narrow, widest anteriorly ; the remainder of the 

 infraorbital ring is narrow, but widening behind. 



The suprascapula and scapula are feeble ; the humerus, with the 

 bones of the fore-arm, forms a deep groove, the bottom of which is 

 nearly completely bony ; the radius has a wide ovate foramen. Tho 

 coracoid is broad, tapering inferiorly. Each of the pubic bones is 

 formed by three narrow lamellae, and terminates posteiiorly in a 

 short and slender process. 



There are ten abdominal and fourteen caudal vcrtehrce, the length 

 of the former portion of the vertebral column being to that of the 

 latter as 1 : 1-7. Each vertebra has a deep lateral impression. Tho 

 neural and haemal spines are moderately long and strong, and inclined 

 backwards ; the interneurals and interhaemals are feeble. The haemal 

 of the first caudal vertebra and the first interhaemal are united to 

 one strong bone, forming the base for the anal spines ; it is very 

 slightly curved anteriorly. The ribs are of moderate strength, and 

 have slender epipleural spines. 



2. CARANGICHTHYS. 



Carangichthys, Sleeker, Celebes, iii. p. 7G0. 



Body compressed, elevated, covered with veiy small scales; the 

 posterior portion of the lateral line furnished Avith plates, each of 

 which is armed with a hook. Prceoperculum denticulated.- Cleft of 

 the mouth moderate ; snout short, convex. Two dorsals, the first 

 with eight spines and with an anterior horizontal spine, directed 

 forwards. Two anal spines, separated from the soft portion ; finlets 

 none. Teeth in the jaws, on the vomer, the palatines, and on the 

 tongue. Seven branchiostcgals. 



Sea of Celebes. 



