568 PROCEEDiyOS of the national museum. vol.45. 



CHILOSCYLLIUM INDICUM (Gmelin). 



This species, recorded from Manila by Giinther/ does not appear 

 to have been noted by more recent -wTiters. The Albatross collection 

 contains no specimens from the Philippines, but two specimens 65 

 and 58 cm. long, obtamed in the market of Kowloon (China) on 

 October 5 and October 21, 1908. 



CIRRHOSCYLLIUM Smith and Radcliffe; new genus.^ 



Similar to Parascyllium GiU. Body slender; anal fin in advance of 

 second dorsal; head much depressed; conical teeth with strong 

 lateral cusps in both jaws; spiracles minute; fourth and fifth gill 

 slits confluent; dermal denticles elongate-ovate, three-keeled; a pair 



of widely separated skin -covered, 

 tliread-like appendages on under side 

 of throat. 



Type of genus. — Cirrhoscyllium ex- 

 politum Smith and Radcliffe. 



CIRRHOSCYLLIUM EXPOLITUM Smith and Rad- 



cliSe, new species. 



Plate 45. 



Form very elongate; body slightly 

 compressed, abruptly elevated at nape 

 and tapering regularly from nape to 

 tail; head depressed, broad, its length 



Fig. 1. — Dermal denticles from side oF/, ,• 'hi-vn j • ir-?- 



ciEEHoscYLLiuM, ENLARGED. (^^ postcnor gill slit) coutamed^ 5.5 



times in total length of fish, its width 

 at first gill slit about 0.5 length, its depth 0.5 width; tail straight, 

 depth of peduncle greater than diameter of eye; eye small, lateral, its 

 diameter equal to last gill slit and contained 2.5 in snout and 7.5 

 times in head, a well-developed naked fold of skin around eye, this 

 most evident below; interorbital broad, flat, 2.5 times diameter of 

 eye; snout flat, sharp in profile, under surface slightly upturned, tip 

 obtusely rounded; mouth mde, slightly curved, entirely anterior to 

 eye, the angle nearer to eye than to end of snout; a well-developed 

 fold at angle of mouth which extends to symphysis of lower jaw; 

 nasal valves much convoluted; spiracles minute, below and slightly 

 behind posterior angle of eye; four anterior gill slits narrow, the fourth 

 opening on margin of anterior wall of the fifth wliich is very wide and 

 above pectoral base; teeth in both jaws conical, mth well-developed 

 lateral cusps; teeth constricted just below gum, their base expanded 

 and excentric; base of teeth in upper jaw with a deep antero-posterior 

 groove, much shallower and broader in lower jaw; entire surface and 



I Voyage of Challenger, Zoology, vol. 1, pt. 6. 



* In the study of this shark the writer has been associated with Mr. Lewis Radcliffe, who assumes joint 

 authority for the new genus and species described. 



