142 



THE VOYAGE OF H.M.S. CHALLENGER. 



The Shell (figs. 9-11) is very elongate oval in outline; the free chitinous margin is 

 very narrow and only slightly uncovered on the dorsal surface, which is finely granular 

 and marked by the divisions between the loeuli ; the ventral surface is somewhat elevated 

 and marked by a distinct but not very deep median groove ; the last locuhis has an index 

 of 40"5, and is bounded posteriorly by an almost semicircular line ; the stride are very 

 close ; the limbs of the irmer cone arise about midway along the shell, pass backwards 

 as low, narrow, smooth fillets, and unite behind without forming any deep cavity ; the 

 posterior extremity is curved towards the ventral aspect and ends in a narrow blunt outer 

 cone, to the apex of which is attached the straight dorsaUy directed spine. 



Dimensions. 



Length, total, 



End of body to mantle-margin. 



End of body to eye, 



Breadth of body, . 



Breadth of head, . 



Eye to edge of umbrella, 



Breadth of fin. 



Length of the shell. 



Breadth of the shell, 



Length of first arm,i 

 Length of second arm, 

 Length of third arm, 

 Length of fourth arm. 

 Length of tentacle, 



82 mm. 



37 



34 



18 



15 



4 



3 

 37 

 11 



Right. 



Left. 



8 mm. 



9 mm 



9 „ 



9 „ 



„ 



10 „ 



„ 



10 „ 



The posterior extremity of the sheU of this form closely resembles that of Sepia 

 andreana, Steenstrup, from Japan, but both animal and shell are much wider as well as 

 thicker in proportion to the length. Furthermore, the arms are subequal, whereas in 

 Steenstrup's type those of the second pair are nearly twice as long as the others. In 

 the Challenger specimen also the tentacular club is long, narrow, and provided with 

 subequal suckers, while in Sepia cmdreana it is shorter and there are five larger suckers 

 along its middle. 



Sepia kobiensis, Hoyle (PI. XVIII. figs. 7-14 ; and woodcut 7). 



1885. Sepia hohiends, Hoyle, Diagnoses II., p. 195. 



1885. „ „ Hoyle, Prelim. Rep. IL, p. 300. 



1886. ,, „ Appellof, Japanska Ceph., p. 20, pi. iii. fig. 7. 



^Taftitoi!.— Station 233, Bay of Kobe, Japan, May 17, 1875; lat. 34° 39' K, long. 

 135° 14' E. ; 8 fathoms ; mud. One specimen, $ . 



^ Measured from the oral margin. 



