NOTES OX THE JAPANESE MVOPSIDA. 



595 



generic designation for the species, Naef s specific name may well be 

 retained until a more precise knowledge than we have at present 

 tibout the Sepiolid in question would necessitate a change. 



5. Inioteuthis parva sp. nov. 

 Pl. XL, figs. 9, io. 



Diagnosis. Body short, somewhat spherical, about as long as 

 broad, rounded behind as usual. Fins moderately large, nearly circular 

 in outline, longer than half the length of mantle, joined in the middle 

 of mantle-length, notched at the anterior attachment, the line of at- 

 tachment very short, being not longer than about one-third the 

 mantle-length ; mantle joined to head by a skin which is narrower 

 than the distance between eyes. Head large, about as broad as 

 body, with big eye-balls ; siphon long, reaching the angle between 

 ventral arms, conical at base and tubular distal ly. 



Arms subcqual, the order of their length being 3, 2, 1=4, the 

 longest as long as mantle. Suckers nearly spherical, with small 

 aperture, distinctly arranged in two series, their size differing in 

 different arms as follows : In the first arm (right side), there are 

 about thirty equally small suckers. In the second arm, proximal 

 forty suckers are very large, except the two basalmost which are as 

 small as those of the first arm ; distally there are about eight small 

 terminal ones. Third arm similarly provided with suckers as the 

 second, only here the large suckers number about sixteen and the 

 small terminal ones about twelve. In the fourth arm, there are in 

 all about twenty-five suckers, of which the middle ones are a little 

 larger than the rest, but not so large as the largest in the second and 

 third arms. The suckers have horny rings with entire edge (Pl. XI, 

 fig- 9)- 



The hectocotylus is the left dorsal arm (Pl. XI, fig. 10). The 

 suckers on it are arranged in two series, right and left. The 



