[SCIENTIFIC RESULTS OF THE PHILIPPINE CRUISE OF THE FISHERIES STEAMER 

 "ALBATROSS," 1907-1910.— No. 28.] 



THE HEMISCYLLIID SHAEKS OF THE PHILIPPINE AKCHI- 

 PELAGO, WITH DESCRIPTION OF A NEW GENUS FROM 

 THE CHINA SEA. 



By Hugh M. Smith, 



United States Commissioner of Fisheries 

 and Director of the Albatross Philippine Expedition. 



The family of Hemiscylliidse is only sparsely represented in the 

 Albatross collections made during the Philippine cruise. Two well- 

 known species were obtained, and in addition a new genus {Cirrhos- 

 cyllium) from moderately deep water in the China Sea. The relations 

 of the new genus to the genera previously described are in part shown 

 in the following key: 



KEY TO THE GENERA OF HEMISCYLLIIDA. 



a ^. Anal fin behind second dorsal; spiracles large. 



6 '. No labial fold on lower jaw Hemiscyllium. 



fe 2. A labial fold on lower jaw Chiloscy Ilium. 



a 2. Anal fin in advance of second dorsal ; spiracles minute. 



c ^ Nape not conspicuously elevated; no appendages on under side of throat; 



teeth of lower jaw with indistinct lateral cusps Parascyllium. 



c 2. Nape conspicuously elevated ; a pair of thread-like appendages on under side 

 of throat; teeth of both jaws with distinct lateral cusps Cirrhoscyllium. 



CHILOSCYLLIUM PUNCTATUM MUller and Henle. 



The collection contains tliree specimens referable to this species, 

 heretofore known from the India seas, Cliina seas, and Australia. 

 The smallest example, a female 40 cm. long, obtained in the Siasi 

 market on February 17, 1908, shows in alcohol about 10 distinct dark 

 brown cross bands on head, body, and fins. The largest specimen, 

 90 cm. long, secured in the Zamboanga market on May 27, 1908, is of 

 nearly uniform gray coloration with faint indication of dark bands; 

 it is a female and contains two large, thick chitinous egg cases. The 

 third specimen, a female 65 cm. long, taken in the Cebu market on 

 August 16, 1909, is colored like the second example. 



Proceedings U. S. National Museum, Vol. 45— No. 1997. 



567 



