CEPHALOPODS OF THE PHILIPPINE ISLANDS 45 



fleshy oral surface. The suckers of the other arms are in about 12 

 pairs, those of the midsection of II and III greatly enlarged, a little 

 more than twice as large as the suckers of I. The middle 3 or 4 pairs 

 are greatly and almost abruptly enlarged. 



The tentacles are long and slender, flattened on the oral surface 

 and bear small, slightly expanded clubs. The clubs are bordered on 

 each side by a low web which extends the full length. The ventral 

 one is low and indistinct, but the dorsal web is broad. There is no 

 carpal cluster. The suckers of the club are arranged in about 12 

 rows of minute round suckers with small apertures. 



There is a small round photogenic organ on the ventral surface of 

 the ink sac. It is round and has two raised pores in the surface. 



The spermatophores have been well figured by Sasaki (1929). 

 Two of the present males were ripe. 



Measurements and indices of 12 specimens of Sepiolina nipponensis 

 (Berry) are: 



DSSie DSill B5BSS 



Type. — Stanford Natural History Museum. 



Type locality. — Suruga Bay, Japan. 



Discussion. — There are certain small discrepancies between these 

 specimens and those described by Sasaki from Japan: (a) The arm 

 formula is different but it is also highly variable, (b) the suckers of 

 the lateral arms in the male are 12 or 13, not 15, (c) the 5th and 6th 

 pairs of suckers in the male are largest, not the 7th to 9th, and (d) 

 there are 22 pairs in the female instead of 25. The present specimens 

 agree with Sasaki's and differ from Berry's by (a) the broader web 

 between dorsal arms of male and (b) the fins, which do not reach the 

 border of the mantle. My largest specimen is only slightly larger 

 than Sasaki's, but the smallest is 2 mm. shorter. 



Distribution.— Suruga Bay, 124-131 fms. (Berry); near Goto 

 Island, Kyushu, 139 fms. (Albatross); Kagoshima (Sasaki); Van 

 Dieman Strait, Kyushu, 115-119 fms. (Albatross); Cebu, Luzon to 

 Mindanao, Philippines! 



