i8o Memoir Sears Foundation for Marine Research 



8b. Caudal considerably less than Ys of total length; ist dorsal originating 

 over or behind pelvics and terminating behind latter. 

 9a. Cloaca much nearer to snout than to tip of caudal. 



loa. Mouth closer to tip of snout than to front of eye; lower labial 

 furrow not crossing chin. 



Hemiscyllium Andrew Smith, 1837. 

 Australasia, East Indies, India. 



lOb. Mouth closer to front edge of eye than to tip of snout; lower 

 labial furrow continuous across chin. 



Chiloscyllium Miiller and Henle, 1837. 



Western Pacific, Australasia, Indian Ocean, Red 

 Sea, South Africa. 



9b. Cloaca as near to tip of caudal as to tip of snout, or nearer. 



1 1 a. Rear end of base of anal terminating close to caudal and its 

 rear tip overlapping latter. Brachaelurus Ogilby, 1907. 



Australia. ° 



lib. Rear end of base of anal separated from caudal by a space twice 

 as long as the base. HeteroscylUum Regan, 1908. 



Australia.' 



Genus Ginglymostoma Miiller and Henle, 1837 

 Nurse Sharks 



Ginglymostoma Miiller and Henle, S. B. Akad. Wiss. Berlin, 1837: 113; also Arch. Naturg., (3) i, 1837: 

 396 (no species given) ; type species, Squalus cirratus Bonnaterre, Tabl. Encyc. Meth. Ichthyol., 1788: 7, 

 American Seas, designated by Hay, U.S. Geol. Surv. Bull., 179, 1902: 310. 



Generic Synonyms: 



Squalus (in part) Bonnaterre, Tabl. Encyc. Meth. Ichthyol., 1788: 7; Gmelin, in Linnaeus, Syst. Nat., t, 



1789: 1492; also subsequent authors; not Squalus Linnaeus, 1758. 

 Scyllium (in part) Griffith, in Cuvier, Regne Anim., 10, 1834: pi. 30; for S. cirrhosum Griffith, equals 



Squalus cirratus Bonnaterre, 1788. 

 Ginglimostoma L. Agassiz, Poiss. Foss., 5, 1838: 85; equivalent to Ginglymostoma Muller and Henle, 1837. 

 Gingylostoma Springer, Proc. Fla. Acad. Sci., j, 1939: 13; evident misspelling for Ginglymostoma. 



Generic Characters. Sides of head without fleshy lobes; back without papillae; no 

 longitudinal ridges on back or sides of trunk, and no longitudinal fold below eye ; eye very 

 small, the orbit with a longitudinal fleshy fold above and below, whoUy inside the eyelid, 

 and not connected with latter; spiracle minute, about on a level with eye; 4th and 5th gill 



5. The new generic name Brachaelurus was proposed by Ogilby (Proc roy. Soc. Qd., so, 1907: 27) for Chiloscyl- 

 lium modestum Giinther, 1871 (equals Squalus •waddi Bloch and Schneider, 1801), in which the anal is close 

 to the caudal; but the name was transferred by him a year later (Proc. roy. Soc. Qd., a/, 1908: 3) to his new 

 species colcloughi, in which the anal is far from the caudal ; he proposed a new generic name, Cirriscyllium, for 

 modestum (Proc. roy. Soc. Qd., 21, 1908 : 4). Cirriscyllium Ogilby, 1908, is therefore a synonym of Brachaelurus 

 Ogilby, 1908, as pointed out by Regan (Ann. Mag. nat. Hist. [8] 3, 1908: 455), who proposed HeteroscylUum 

 for colcloughi to clarify this confusion. 



