LIST OF FISH. 



7. STEGOSTOMA. 



The mouth is small and entirely transverse. On the upper and 

 under-jaw the skin forms two flat rolls which support the teeth: 

 these resemble a tripartite leaflet. The middle part between the 

 nasal-flaps is very much broader than the flaps themselves, and 

 forms a thick, transverse roll above the mouth, forming an upper 

 anterior cover to it: it has a rounded free border in which the fore 

 and hinder surfaces unite; the hinder one in its usual hidden posi- 

 tion is also concave-scooped. The nasal-flaps are reduced to an 

 edge of skin which binds the middle roll to the sides. A stout 

 barbel-like prolongation of the nasal-flap. No flap on the under 

 edge of the nasal opening. The corner folds of the mouth are short ; 

 the pits deep. The head is much arched and rounded. The open- 

 ing between the eyelids is very small, transversely oval, and has 

 sharp edges. The fifth gill-opening is concealed" in the fourth. 

 The third, fourth, and fifth gill-openings over the breast-fin. The 

 first back-fin stands over the belly-fin, and reaches directly over the 

 same in front: the second back-fin stands between the belly-fins 

 and anal. The anal is close before the tail-fin. The tail-fin is 

 almost equally high throughout, and has the usual under lobe to- 

 wards the end, and is very long in proportion to the body. 



Stegostoma, Midi. $ Henlc, Mag. Nat. Hist. ii. 1838. Plagiost. 24. 



Bonap. Selac. Tab. Anal. 1], 1838. 

 Scyllium, sp., R'upp. Chondropt. 1. 



1. Stegosto.ua fasciattjm. Zebra Shark. 



Stegostoma fasciatum, Mull. §• Henle, Plug. 24. Bonap. Selac. 



Tab. Anal. 11, 1838. 

 Squalus, Seba, Thesaurus, iii. t. 34, n. 1, p. 105. Gronov. Mus. i. 



82, n. 136. Zooph. 31, n. 147. 

 Le tigre, Brouss. 658. 

 Squalus tigrinus, Gmel. Syst. Nat. 1493, 19. Forst. Zool. Intl. 24, 



t. 13, f. 2. 

 Squalus longicaudus, Gmel. Syst. Nat. 1496, 24. 

 Zebra Shark, Shaw, Nat. Misc. 434. 

 Squale tigre, Lac dp. i. 249. 

 Squalus "fasciatus, Block, 113. (Copied by Shaw, Gen. Zool. 148 



and Encyc. 23). Block, Schneid. 130. 

 Pollee Makum, Russell, 18. 

 La roussette tigree, Diet. Sci. n. 33, f. 2. 



