CEPHALOPODS OF THE PHILIPPINE ISLANDS 



157 



D5350, 43 miles off Point Tabonan, Palawan Passage, 942 m., Dec. 

 27, 1908. 



Description. — This species has been so well described by Thore 

 (1949) that nothing can be added from examination of the present 

 material. The specimens are in such poor condition that the 

 description has been supplemented from Thore's paper. 



The mantle is oblong, slightly pointed at the posterior end, and 

 gelatinous. In fresh material the viscera may easily be studied in 

 situ, but in the present specimens the mantle is yellowish and opaque. 

 In well-preserved specimens an outer jellylike coating bears minute 

 bristles. 



The head is nearly as wide as the mantle and bears rather large 

 eyes which face lateral and are about 20 percent of the mantle length. 



The arms are short, with the exception of III which in older spec- 

 imens reaches a considerable size, and they are in the order 3.4.2.1. 



Figure 35. — Japetella diaphana Hoyle a, dorsal view of female, mantle length 35.0 mm.; 

 b, oral view showing sucker arrangement. 



