REPORT ON THE CEPHA.LOPODA. 181 



the shortest, the other three pairs subequal, the order of length being 3, 4, 2, 1 ; they 

 are quadrilateral, with rounded angles externally, with two slightly raised rido-es 

 internally, on which the suckers are situated ; they taper gradually to very slender tips ; 

 the third pair have a delicate narrow web along the third quarter of their outer aspect. 

 The suckers are in two series throughout ; they are small and distant along the proximal 

 third (the webbed portion) of the arms, then larger and closer, and finally minute and 

 very closely set towards the tips ; they are set transversely on short conical peduncles, 

 spheroidal, with a swollen band round the face. The horny ring (figs. 12, 13 ) is smooth 

 proximally, distally it bears about five close-set, broad, bluntly rounded teeth ; the smaller 

 proximal suckers have a smooth ring (fig. 14). No trace of hectocotylisation could be 

 found on any of the arms. The umbrella is found only between the dorsal, dorso-lateral, 

 and lateral arms ; it takes origin from the sucker-bearing ridge and extends about one- 

 third up the arm. The buecal membrane (fig. 11) is broad and somewhat contracted 

 over the mouth ; it has the usual seven points, but they are very blunt and indistinct ; 

 it is united by three ligaments with the web between the dorsal and dorso-lateral arms, 

 by a ligament with the inner side of each ventro-lateral arm on its ventral aspect, and by 

 another to the inner surface of each ventral arm, there being altogether seven ligaments. 

 The membrane bears no suckers; its inner surface is much creased and folded. The 

 outer lip is very thin and smooth, and hidden between the creased integument of the 

 buccal membrane and the inner lip, which is thick and marked with irregular radial 

 grooves. 



T7ie Tentacles have been removed ; the stumps which remain are not half the length 

 of the arms ; they are quadrangular and flattened from above downwards. 



The Surface bears a large number of papillse, slightly elevated, resembling those of 

 Calliteuthis ; they are arranged most thickly on the ventral aspect of the head and body, 

 but there are also a few on the dorsal surface ; they extend up the outer aspect of the 

 arms, three series on the ventral arms, two on each of the others. Near the tip of each 

 dorsal arm is a series of four or five black, elongate, egg-shaped swellings, gradually 

 diminishing in size, and forming apparently an extreme development of the papillae above 

 mentioned. The second pair of arms appears to have been similarly provided ; the third 

 has been so stripped of integument towards the tips that it is impossible to ascertain the 

 original condition. In the fourth the warts at the tij) are quite similar to those lower 

 down the arm. 



The Colour is a dull purplish -madder, paler above than below, the papillse are a deep 

 black, with a white centre, usually situated towards the anterior margin. The buccal 

 memby-ane, both sides of the umbrella, and the inner surfaces of the arms, so far as this 

 extends, are a deep purple. 



The Gladius (fig. 15) resembles that of Loligo, the anterior portion forming about 

 one-fourth the total length. 



