CEPHALOPODA. — BERRY. 



225 



Gladius not examined, due to the crushed condition of the 

 specimen. 



Mandibles (Fig. 8) black ; upper mandible with a slender 

 curved beak ; lower much shorter and stouter, and bearing 

 a sharply raised median carina on its \nngs. 



Radula (Fig. 9) ; median teeth with wide, hat-shaped bases 

 and simple, sharp, conical cusps ; first laterals also simple 

 conic, but much smaller ; second laterals conic at base, bvit 

 their points attenuated to more than tAvdce the length of the 

 first laterals ; marginals long, straight, knife-shaped, in their 

 turn again nearly twice as long as the second laterals. 



PhotopJwres of the general integument many in number, 

 but scattered rather than crowded, and more numerous and 

 larger ventrally than above ; partly owing, perhaps, to the 

 condition of the specimen, any exact system of rows on the 

 ventral aspect of the body or head I am unable to distinguish, 

 the general arrangement having been represented by the artist 

 as carefully as possible in the drawing (PI. Ixii., fig. 1) ; the 

 series or groups capable of positive defiiiition are : — A close-set 

 submarginal series of seven organs between the ventro -lateral, 

 points of the mantle, an arch 

 of about six organs on the 

 head bounding the apex of 

 the funnel groove, a circlet 

 of about sixteen bounding 

 the right eye -opening, and 

 at first five, then four 

 longitudinal series of organs 

 arranged in well-spaced 

 transverse series along the 

 ventral surface of each 

 ventral arm ; first two 

 transverse series on arm 

 proper containing five 

 organs, next two four each, 

 the number thereafter 

 gradually diminishing ; 



Fig. 9. — Collitciithis miranda $ 

 [545], four rows of teeth from one side 

 of radula of type ; camera drawing 

 from a mount in balsam. 



photophores surrounding left eye-opening fewer than on the 

 right and greatly reduced in size, 7-8 minute ones distinguish- 

 able along the ventral border, but dorsally more difficult to 

 make out ; excluding circumorbital series, possibly the 

 equivalents of 10-11 longitudinal series of photophores present 

 on ventral aspect of head ; on outer surfaces of the six dorsal 

 arms, I make out two rows, one on either side of the cartilagi- 

 nous ridges soon to be described ; photophores absent from 

 funnel. 



