136 



THE VOYAGE OF H.M.S. CHALLENGER. 



for me between the two shells ; he says (as is obvious from the figures), that the 

 Challenger species is different in form from Sepia inestus, which is comparatively 

 broader " and has a peculiar raised band on each side not unlike a muscular scar " ; 

 and adds " I think your shell may be the same species (although a vao\) that Gray 

 has identified in the museum collection as Sepia capensis, but which seems to me 

 distinct from Sepia capiensis of d'Orbigny { = Sepia australis, Gray and Gaimard). 

 Our two shells, both from Australia (one from Port Jackson), are rather narrower than 

 yours ; " further, the last loculus is smaller and the curve of its posterior margin is 

 more flattened. The two shells alluded to by Mr. Smith are here figured for comparison 

 with the Challenger specimen. 



The present specimen differs from Sepia capensis, d'Orbigny, in the form of the 



Fig. 6. — Shell of a Sepia in the British Museum labelled " S. capensis. Sydney, Presented by 

 J. Edwards, Esq. K.N." Drawn by Mr. P. J. Smit. 



ventral aspect of the shell ; furthermore, the curves of the striated area are more 

 transverse, the anterior extremity is more pointed, and there is the ridge on the spine 

 not mentioned by d'Orbigny (compare Ceph. acet., pi. vii. fig. 4). As regards the 

 external characters of the animal, Sepia Gap>ensis has three suckers on the tentacle 

 larger than the rest, and on the sessile arms the two inner series of suckers are larger 

 than the outer. 



The second left arm shows an abnormality, the groove in which the suckers lie 

 being interrupted for about 2 mm. by the folding over and union of the two margins ; 

 the part of the arm beyond this has only two series of very small suckers (fig. 2). 



