1916.] 



NATURAL SCIKNCKS OF I'll 1 1. \ D 1 ;i.l'l 1 1 A ." 



.i.i 



Subocular photophores large, circular in outline, whitish; four 



in number on each eye; three, of which the median is somewhat the 

 smallest, occupy the usual situs on the ventral periphery; the fourth 

 is larger than any of these, and situated just within the boundary 

 of the pupil, at a point almost exactly behind the centre of the lens 

 (fig.5). 



A series of four large ovoid photophores appears embedded in the 

 stalk of each tentacle below the club, the three proximal ones occupy- 

 ing the proximal half of the tentacle, the distal one somewhat isolated 

 from the others and near the club. At the extreme base of the 

 tentacle borne on a short stalk on its outer side appears a spherical 

 photophore, which is almost wholly concealed in preserved specimens 

 by the tentacular sheath. It is distinctly larger than even the most 

 proximal of the organs just described, and judging from its outward 

 appearance only I think it will prove to be entirely different in 

 structure text fig. 11 (PI. VIII, fig. 4). 



V 



Fig. 12. 



Fig. 13. 



Fig. 14. 



Fig. 12. — Lampadioteuthis megaleia, camera drawing of gladius of type [416], 



dorsal aspect, x 3. 

 Fig. 13. — Lampadioteuthis megaleia, ventral view of posterior extremity of 



gladius [416], X 18, camera sketch. 

 Fig. 14. — Dorsal view of same, same scale. 



