46 THE PLAGIOSTOMIA. 



the hinder part of orbit. Gill openings small, third to fifth above the pectoral, 

 third and fourth close together, fifth widest. Scales small, with median keel. 



Fins all short; dorsals subeqiial, hinder angles produced, first larger and 

 originating behind the bases of the ventrals, distant from base of second one 

 and one half times the base of the latter, or a little more than the distance of 

 the latter from the origin of the anal. Subcaudal narrow. 



Brownish with many small dots and spots of darker, grouped in threes and 

 fours, and with eleven or more indefinite cross-bands of darker, separated by- 

 spaces of nearly equal width, with one or more large white-edged spots of black 

 above the hinder part of the pectoral and with a couple of smaller spots on the 

 front edge of each dorsal. Ventral surfaces uniform light. Type specimen 22 

 inches in length, a male. 



Northwestern Australia. 



Hemiscyllium freycineti. 



Scyllium freycineti Quoy et Gaimard, 1824, Voy. Uran., Poiss., p. 192. 

 Scyllium malaisianum Lesson, 1830, Voy. Coquille., Poiss., p. 94, pi. 6. 

 Chiloscyllium malaianum Muller & Henle, 1841, Plagios., p. 20; Dumeril, 1853, Rev. et mag. Zool., 



Scyll., p. 40; 1865, Elasm., p. 332. 

 Chiloscyllium freycineti Regan, 1908, Proc. Zool. soc. Lond., p. 359. 



Elongate, slender; body cavity in the anterior third of the total length; 

 head short, subcorneal; snout very short, blunt. Anterior nasal valves with 

 fleshy, pointed cirri. Mouth near the end of the snout, with labial folds around 

 the angles. Three gill openings above the pectoral, fourth and fifth close to- 

 gether and largest. Spiracle below the hinder part of the orbit. Dorsals 

 subequal, hind angle produced; origin of the first dorsal above the ends of the 

 ventral fins. Anal small, close to the caudal. Caudal short, narrow; subcaudal 

 fin small, narrow, without a produced lobe. 



Reddish brown, darker on the back; body and fins with numerous irregular 

 rounded spots of darker; a pair of the larger spots on the front edge of each 

 dorsal, a spot above the base of each pectoral, and several spots on the caudal. 

 From the nape backward there appear indications of cross-bands in positions 

 like those on H. ocdlatum and H. trispeculare, and with the spots on the fins the 

 markings are very suggestive of close affinities with those species. 



Waigiu Island, New Guinea. 



