266 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



EUPROTOMICRUS LATICAUDUS (Smith and Radcliffe) 



Squaliolus laticaudus Smith and Radcliffe, Proc. U. S. Nat. Mus., vol. 41, 

 p. 684, text fig. 4 (under view of head), pi. 54, 1912 (type locality : Lat. 13° 

 42' N., long. 120° 57' 15" E., Batangas Bay, Luzon). 



Euprotomicrus laticaudus Garman, Mem. Mus. Comp. Zool., vol. 36, p. 235, 1913 

 (Luzon).— Fowler, Proc. 4tli (1929) Pacific Sei. Congr., Java, p. 497, 1930 

 (reference). — Roxas and Martin, Dept. Agr. Comm. Manila, Tech. Bull. 6, 

 p. 15, 1937 (reference). 



Depth 61^ to subcaudal origin; head 3%, width 2i/2, Snout 2% in 

 head ; orbit 5, II/2 in snout, 1% in interorbital ; mouth width 4 in head, 

 transversely straight, with deep groove back from each angle % mouth 

 width; nostril slightly before middle in snout length, equals inter- 

 narial, valves rounded; interorbital 3 in head, well convex. Gill 

 openings small, last 3 closer. Spiracle equals internarial, half orbital 

 length behind and above eye. 



Scales small, quadrate, each with depressed median crown. 



First dorsal inserted little nearer second dorsal origin than snout 

 lip, equals preoral length ; second dorsal begins over hind basal ventral 

 edge, fin 2% in head; caudal 5i/^ in rest of fish, subcaudal 1% in 

 caudal or 2 in head; least depth of caudal peduncle 2i/^ in orbit; 

 pectoral 2% in head, width ll^ its length, reaches half way in first 

 dorsal base ; ventral 2 in head. 



Color in alcohol dark brownish black. First dorsal brown basally, 

 white marginally. Second dorsal white. Caudal brown basally, 

 whitish marginally. Pectoral black basally, also small blotch termi- 

 nally, otherwise white. Ventral rays and disklike terminal expansions 

 white. 



Philippines. One of the smallest of sharks. 



U.S.N.M. No. 70259. D. 5268. Lat. 13°42' N., long. 120°57'15" E., in Batangas 



Bay, Luzon. In 170 fathoms. July 8, 1908. Length, 150 mm. Type of 



Squaliolus laticaudus. 

 U.S.N.M. D. 5297. Same locality as above. July 24, 1909. Length 115 mm. 



Apparently female, as ventral without modified terminal disks as in type. 



Paratype of Squaliolus laticaudus. 



Genus DALATIAS Rafinesque 



Dalatias Rafinesque, Caratteri animali Sicilia, p. 10, 1810. (Type, Dalatias 

 sparophagus Ila&nesq\ie= Squalus licha Bonnaterre, designated by Jordan, 

 Tanaka, Snyder, Journ, College Sci. Tokyo, vol. 33, p. 22, 1913.) 



Dalatias Agassiz, Nomencl. Zool., Pise, p. 21, 1845. (Type, Dalatias sparophagus 

 Rafinesque. ) 



Scymnus (not Kugelmann 1914) Cuvier, Regne animal, vol. 2, p. 130, 1817. (Type, 

 Squalus americanus Gmelin, monotypic.) 



Scymnorhinus Bonaparte, Cat. Metod. Pesci Europei, p. 16, 1846. (Type, Squalus 

 licha Bonnaterre.) 



Borborodes Gistel, Naturg. Thierreichs, p. x, 1848. (Type, Squalus licha Bon- 

 naterre, virtually. Borborodes Gistel proposed to replace Scymnorhinus 

 Bonaparte.) 



