98 K. MITSUKUKI. 



I hope to retarn to the subject and to give fuller notes at no distant 

 future. The occurrence of this interesting genus in both the Pacific and 

 Atlantic Oceans is, however, an interesting fact well worthy of being placed 

 on record as speedily as possible. 



Imperial University, Tokyo. 

 June 11, 1895. 



Phyllopod Crustacea of Japan. 

 C. Ishikawa. 



Brancliipiis hiigemtnuiensls, n. sp. 



Male. — Head rather broad, lateral eyes oval, ebony-black, margined 

 with brick-red colour ; eye-stalks short, its basal portion narrow. First 

 antemi£e tolerably thick, a little over twice as long as the eye-stalk, with 

 three long setae and with about nine olfactory hairs on its apical portion. 

 Median eye H-shaped, black with a brick-red central part. Second antennae 

 or claspers indistinctly two jointed, large and long, and provided with a very 

 large, stout spine at the posterior side of the basal portion of the second 

 joint. This spine is strongly bent forwards and exceeds in length the 

 second joint of the main stem of the antennae \M\i\\ which it forms a 

 large shear. The upper arm of this shear is slightly bent backwards, 

 and provided with a row of conical processes on its anterior side, each 

 of which is beset with a single sensory (?) seta at its tip. Near the distal 

 end of the arm slightly interior to this row of processes are two larger 

 ones with enlarged tips each of which is also beset with a single hair. 

 There are also two rows of blunt spines on the posterior edge of this branch, 

 the outer row of which being much the larger. 



Frontal appendage long and tortuous, rolled downwards in its natural 

 state. When extended, it is longer, and its basal portion thicker, than the second 

 antennae. It is divisible into three portions, the thick basal portion which is 

 slightly curved downwards and passing abruptly into the second median 



