FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 41 



Genus HALAELURUS Gill 



Halaelurus Gnx, Ann. Lye. Nat. Hist. New York, vol. 7, p. 407, 1862. (Type, 



Scyllium hiirgeri Miiller and Henle, orthotypic.) 

 Holohalaelitrus Fowler, Proc. Acad. Nat. Sci. Philadelphia, vol. 85, p. 235, 1934. 



(Type, ScylUorhinus regani Gilchrist, orthotyi:)ic. ) 

 Aulohalaelurns Fowleb, ibid., p. 237. (Type, Catulns laljiosus Waite, orthotypic.) 



Body short, caudal portion longer. Head short, depressed. Snout 

 short. Mouth large, with labial fold around each mouth angle and 

 on each jaw. Teeth small, numerous, with 3 to 5 cusps, rarely without 

 lateral cusps. Nostrils with two valves; anterior widely separated 

 across internarial space, not reaching mouth, cirrus absent or rudi- 

 mentary and no groove to mouth. Gill openings narrow, last two 

 above pectoral. Spiracle small, near corner of eye. Fins all small, 

 first dorsal origin behind ventral origins. Second dorsal farther 

 back than anal origin. Anal short. Subcaudal short. 



South Africa, Arabian Sea, India, Australia, Japan, Southeast 

 Pacific. 



ANALYSIS OF SPECIES 



a*. HoLOHALAELURUs. Moiith without labial folds ; coloration variegated with 

 dark or light spots. 

 &\ Anal base length greater than distance between anal and subcaudal origin. 



regani 

 b^. Anal base length less than distance between anal and subcaudal origin. 



punctatus 

 o^ Halaelurus. Labial folds moderate or short, lower not extending halfway 

 to symphysis. 

 (f. First dorsal smaller than second. 



d\ First dorsal origin above midventral base ; uniform blackish_ alcockii 

 d^ First dorsal origin above % of ventral base ; brown, with pale cross 



bands and darker and lighter spots bivius 



c^ Dorsals subequal. 



e\ First dorsal origin above midventral base ; transverse dark bands, 



spotted with black biirgeri 



e^. First dorsal origin above last third in ventral base. 

 f. Dark, broad, transverse bands, with marblings and reticulations. 



natalensis 



f. Dark, narrow, transverse bands, about 20 or more quagga 



c'. First dorsal larger than second. 



g^. Uniform dull gray hispidus 



g^. Body variegated, not uniform. 



h\ Body with darker brown spots, but no pale spots. 



i\ With scattered small darker spots analis 



i^ With numerous close-set, large, chestnut-brown spots, also 7 



dark subequal saddles on back garmani 



h'. Body brown, with ill-defined darker cross bars, also many 



cream white spots tending to form rings vincenti 



o^ AuLOHALAEXxiRUS. Labial folds greatly developed, extending along lower jaw 

 nearly to symphysis labiosus 



