SYNOPSIS. 413 



Sp. 215. A. latirostris. Broad-nosed Sturgeon. Snout broad ; 

 keels of the dorsal plates but slightly elevated ; cirri placed 

 nearer to the tip of the snout than to the mouth. ParneZl, 

 Trans. Roy. Sue. Edin. xiv. pi. 4 ; Yarr. Brit. Fish., it 

 p. 479. 



FAM. XXVII. Chimceridce. Fam. of Chvmcerce. Branchia 

 pectinated, only partially free ; vomer alone representing tlie upper 

 jau\ the jaws armed with plates instead of teeth. 



GEN. CIV. CHIMERA. Body elongated, without osseous 

 plates ; dorsals two, the first very high, second low and con- 

 tinued to the tail, the latter attenuated and ending in a naked 

 filament. 



Sp. 216. C. monslrosa. Northern Chimaera. Eyes large, a 

 fleshy process between them bent forwards, and termi- 

 nating in a cluster of small spines : pectorals large and tri- 

 angular, anal rather small: colour different shades of rich 

 brown on a shining white ground, with various rich reflec- 

 tions. Linn., Penn. Brit. Zool., iii. p. 159 ; Don. Brit. 

 Fish., pi. Ill ; Yarr. Brit. Fish., ii. p. 483. Rabbit fish, 

 Flem. Brit. An., p. 172. 



SECOND DIVISION. CARTILAGINOUS FISHES WITH 

 FIXED GILLS. 



FAM. XXVIII. Squalidce. Fam. of Sharks. Jaws repre- 

 sented by ike -palatine and portmandular bones; snout produced 

 beyond the mouthy which (except in one instance) is placed be- 

 neath ; body elongated ; tail thick and muscular; branchial open- 

 ings in the sides of the neck ; pectorals of moderate size ; eyes 

 lateral. 



GEN. CV. SCYLLIUM. Snout rather short and obtuse; nos- 

 trils near the mouth, with a groove-like prolongation to the 

 edge of the lips ; branchial openings five ; teeth small, triangu- 

 lar, with lateral denticles at the base : dorsals two, the first 

 never in advance of the ventrals ; caudal truncated at the ex- 

 tremity, not forked. 



Sp. 217. S. canicula. Small- spotted Dog-fish. Mouth of 



