hoyle: repokts on the cephalopoda. 15 



The Body is oMong, rounded behind, very little longer than broad ; with a 

 slight depression in the ventral median line. The mantle-opening extends less 

 than halfway round the body, terminating some distance below and behind the 

 eye. The siphon is small and bluntly terminated, and would reach only about 

 one-third of the distance from the mantle-margin to the edge of the umbrella. 



The Head is short, and, owing to the prominence of the eyes, consi leral)ly 

 wider than the body. 



The Arms are sub-equal in length, the dorsal being somewhat shorter than 

 the others : on the average they are tliree times as long as the body (measured 

 to the eye). The umbrella is well developed between each pair of arms, though 

 between the dorsal arms its radius is only 12 mm., whilst between the ventral 

 it is 18 mm. (measured from the mouth). The suckers are of average size, 

 closely set and rather prominent : the three proximal ones form a single series. 

 On the third left arm the eleventh sucker is absent: a similar loss seems to 

 have affected the second right arm, but to be in process of repair, for a small 

 sucker is growing in the space between the ninth and eleventh, which was 

 probably formerly occupied by a much larger one. No hectocotylus is present. 



The Surface is rough : the back is covered with granulations which become 

 smaller on the sides and gradually vanish in the centre of the lower surface. 

 These are also found on the external surface of the umbrella and on the proxi- 

 mal jnoiety of the arms. Very minute granulations occur also on the internal 

 surface of the unibrella and the adjacent portions of the sides of the arms. 

 There are no cirri and no papillae which are much larger than the others. 



The Color (in spirit) is a dull violet, shading into ochre below. On the 

 sides lighter patches are indistinctly seen sejjarated from each other by darker 

 veins. In front of and below each eye between the bases of the lateral arms is 

 an eye-like spot, distant about 7 mm. from the eye and 8 to II mm. from the 

 umbrella margin (Plate 4, Fig. 4). It has a pale whitish centre, surrounded 

 by a dark ring ; this in its turn is bounded by a broader area of the paler color 

 of the skin, enclosed by a narrow dark line. 



Dimensions. njm. 



Length, total about 52 



End of body to mantle-margin 11 



End of body to eye 15 



Breadth of body 13 



Breadth of head 14 



Eye to edge of umbrella 13 



Diameter of largest sucker 2.3 



Right. Left. 



Lengtli of first arm 44 i 35 



Length of second arm 50 55 



Lengtli of tliinl arm 60 52 



Length of fourtli arm 40 60 



^ The lengths of tlio arms are measured from the mouth. 



