DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 121 



SUDIS HYALINA, Rafinesque. (Figure 144.) 



Sudishi/alina, Rafinesque, loe. cit., Bonaparte, Icon. Faun. Ital., Pesc. fasp., xxvii, fig. — Gt)NTHER, Cat. 



Fish. Brit. Mus., v, 1864, 420.— Canestrini, Fauna d' Italia, Pesc, 127. 

 Paralepk hyalinus, Cuvier and Valenciennes, hi, 361. 



The height of the body is contained about 11 times in the total length (without caudal), 

 that of the head 3i times. Eye very tar back, the cleft of the mouth not reaching to its 

 anterior margin, which is distant 3.J times the diameter of the eye from the tip of the snout. 

 The distance from the orbit to the margin of the operculum IJ times its own diameter. The 

 ventral is in front of the dorsal fin. 



Eadial formula: D. 10; A. 2i; P. 12; V. 9. 



This species has been found in the Mediterranean about Sicily, Naples, and the Ligurian 

 coasts. It is sufiiciently abundant to be considered a table fish. It has not yet been found 

 in the Atlantic. An allied form, S. ringens (Jordan and Gilbert), was obtained iu 1880, in 

 the Santa Barbara Channel, California. 



Family ODONTOSTOMID.^. 



Odontostomidw, Giix, MS. 



Isospondylous fishes, characterized by oblon'g, compressed, naked body and head, wide 

 mouth cleft, margin of the upper jaw formed by the premaxillaries only ; curved teeth upon 

 the intermaxillaries; large, curved, lanceolate, depressible teeth upon the mandible, vomer, 

 and palatine bones. Eye very large, with orbital cavity expanded downwards. Pseudo- 

 brauchiai well develoi^ed. Air bladder none. Gill opening very wide. 



ODONTOSTOMUS, Cocco. 



Odantoslomiis, Cocco, Lett, .su Alcun. ^>almon, 1838, 32 (type, O. hyalinus, Cocco). 

 Odontostomm, Guntheb, Cat. Fi-sh. Brit. Mu.s., v, 1864, 417. 



Body oblong, comi)ressed, naked ; head large and thick ; snout short ; cleft of the mouth 

 very wide; intermaxillary and nuixillary bones very slender, the former with small, cui'ved 

 teeth of equal size; the lower jaw, the vomer, and the palatine bones armed with long, mov- 

 able teeth, the points of which are lance-shaped. Eye large. Pectoral and ventral fins 

 well develoj)ed ; the latter are inserted below the dorsal, at some distance behind the base of 

 the pectoral. Dorsal fin in the middle of the length of the body ; adipose fin small ; anal 

 long; caudal forked. Branchiostegals, 8; pseudobranchiiB small. 



ODONTOSTOMUS HYALINUS, Cocco. (Figure 14.5.) 



Odontostomue hyalinui, Cocco, Lett, su Salmoni, 32, pi. 4, fig. 2. — Bonaparte, Icon. Fauu. Ital., Pesci., 

 Fasc. XXVII, 1840, fig. lii. — Cuvier and Valenciennes, Hist. Nat. Poiss., xxii, 424. — GCnther, Cat. 

 Fisli. Brit. Mus., v, 1864, 417.— Challenger Report, xxii, 200, pi. lii, fig. A. 



Scopclus balbo, Risso, Hist. Nat. Eur. M6rid., lii, 466. 



Body elongate and much compressed posteriorily ; its height is contained 6 to 6^ times 

 in its total length (without caudal); the length of the head 4J times. The wide cleft of the 

 mouth, which is oblique, extends far beyond the eye, but does not reach the angle of the 

 preoperculum. The eye is contained 5 times in the length of the head. Mandible broad, not 

 attenuated in fi-ont, projecting beyond the mouth. Teeth very large, depressible, the longest 

 exceeding in length the diameter of the eye; the teeth are much compressed, sharp-edged 

 in front and behind; those on the palate have their extremities bent forward. The origin ot 

 the dorsal is nearer to the extremity of the snout than to the root of the caudal; the fin is 

 higher than long. Anal origin behind the vent, which is placed midway between the ventral 

 and anal, and does not touch the vertical from the last dorsal ray. The anal is lower than 

 the dorsal, ending close to the base of the caudal tin. Adipose tin small. Pectoral inserted 

 very far down, truncated, not reaching to ventral. Ventral behind the origin of the dorsal, 

 shorter than the pectoral, extending to vent. 



Kadial formula: D. 12; A. 31. 



