44 THE PLAGIOSTOMIA. 



Hemiscyllium. 



Hemiscyllium A. Smith, 1837, Proc. Zool. soc. Lond., p. 86; Muller & Henle, 1838, Charlesworth's 

 mag., 2, p. 34; 1841, Plagios., p. 16. 



Body moderate, shorter than the tail. Nostrils inferior, near tlie end of 

 the snout, with nasoral grooves; anterior valves reaching the mouth, widelj'- 

 separated by the preoral attachment, each with a long cylindrical cirrus; poste- 

 rior valves with a flap at the outer side of the nostril and forming a fold on the 

 outer side of the nasoral groove with a short free extremity at the angle of the 

 mouth. Mouth transverse, nearer to the end of the snout than to the eye, 

 with labial folds on both jaws around the angle, not crossing the symphyseal 

 region; no transgeneial fold. Teeth small, tricuspid. Eye small, without a 

 fold in the lower lid. Spiracle small, below the angle of the eye. Gill openings 

 small, fifth widest, fourth and fifth close together. Fins rather small; dorsals 

 larger than ventrals or anal and above the space between them. Anal close to 

 the caudal. Subcaudal narrow, short. 



Australia; Melanesia. 



Front edge of dorsals with two large spots 

 a large ocellate spot above the pectoral 



origin of first dorsal above ends of ventral bases 



spots black, round, scattered . . . ocellatum (page 44) 



origin of first dorsal behind a vertical from ventral bases 



spots brown, grouped .... trispeculare (page 45) 

 a nonocellate spot above the pectoral 



origin of first dorsal above ends of ventral fins; angle produced 



spots dark, numerous, rounded . . freycineti (page 46) 



Hemiscyllium ocellatum. 



L'neille Bhoussonet, 1780, Mem. Acad, roy., p. 660. 



Squalus ocellatus Bonnaterue, 1788, Ichth., p. 8; Gmelin, 1789, Linne Syst., 1, p. 1494; Shaw, 1793, 



Nat. misc., 5, pi. 161; Lacepede, 1798, Poissons, 1, p. 253; Schn., 1801, Bloch Ichth., p. 129. 

 Hemiscyllium ocellatum MtJLLER & Henle, 1841, Plagios., p. 16. 

 Scyllium ocellatum Blyth., 1847, Journ. Asiat. soc. Bengal, 16, p. 726, pi. 25b, f. 2. 

 Hemiscyllium oculatum Dtjmbril, 1853, Rev. et mag. zool., Scyll., p. 34; 1865, Elasm., p. 326. 

 Chiloscyllium ocellatum GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 410; Regan, 1908, Proc Zool. soc. 



Lond., p. 359; Gunther, 1910, Sudsee fische, 3, p. 488. 



Elongate, head moderate, snout short, blunt, rounded. Nostrils inferior, 

 near the end of the snout, connected with the mouth by a nasoral groove; an- 

 terior valves reaching the mouth, widely separated by the preoral attachment, 



