SCOMBRIFORMES 



467 



divided dorsal. Tlie pectorals are small. The pelvics fold into a groove. 

 About thirty vertebrae. Small cycloid scales, and large teeth. No air- 

 bladder. 



Goryphaena, Art. ' Dolphin ' ; warm seas. 



Fig. 49".. 

 Lepidopus cavdatus, Euphr. (After G-unther.) 



Family Luvaridae. With a large head and very short snout, but 

 the dorsal fin far back, and a very feeble dentition. About twenty-three 

 vertebrae. The pelvic bones are fused, and the pelvic fins small. There 

 is a small gill-opening. The post-temporal is enormous. 



Luvarus (Ausonia), Raf. ; Mediterranean, Atlantic, Pacific. 



4. The body becomes much lengthened, and the jaws produced into 

 a sharp rostrum. The dorsal and haemal spines expand into flattened 

 plates. The teeth are minute or absent. 



Fig. 496. 

 Trichiwrus lepturus, L. (From Jordan and Evermann.) 



Family Palaeorhtnchidae. The ribs completely encircle the 

 abdomen. The pectoral fins are small, and the pelvic fins large. From 

 fifty to sixty vertebrae. 



Hemirhynchus, Ag. ; Eocene, Euixme. Palaeorhynchus, Bl. ; Oligocene, 

 Europe. 



Family Histiophoridae. The lengthened lower jaw bears a pre- 

 dentary bone. The dorsal and anal fins more or less subdivided ; the 



