54 



PROCEEDINGS OF THE ACADEMY OF 



[Feb., 



in two rows, minute on all the arms, but excessively so on the ventral 

 pair. On a horny ring from one of the distal suckers of the left 

 third arm, I count seven teeth along the upper margin, the central 

 ones especially being long, slender, closely spaced, and rather bluntly 

 pointed. 



Tentacles cylindrical, over twice as long as the arms; robust at 

 base, thence tapering rapidly to the slender club, which is scarcely 

 or not at all expanded (PL VIII, fig. 3). Suckers of club in four much 

 compressed rows; minute; basin-shaped; the horny rings of the 

 largest armed with 9-13 slender acute teeth along the upper semi- 

 circumference (figs. 8, 9). 



Fig. 8. 



Fig. 9. 



Fig. 10. 



Fig. 8. — Lampadioteuthis megaleia, oral view of a median sucker from the left 



tentacle club of the type [416], X 70, camera outline from a mount 



in balsam. 

 Fig. 9. — Lampadioteuthis megaleia, nearly apical view of a similar sucker [4161, 



X 70, camera outline from a mount in balsam. 

 Fig. 10. — Lampadioteuthis megaleia, optical section of second photophore from 



base of left tentacle of type [416], camera sketch from mount in 



balsam, X 15. 



Buccal membrane eight-pointed; the lappets light colored, but 

 the delicate intervening membranes dotted on the outside with dark, 

 wine-colored to brownish chromatophores. 



Fig. 5. 



Fig. 11. 



Fig. 5. — Lampadioteuthis megaleia, left eyeball, seen from below in outline, 



showing position of photophores, X 1§. 

 Fig. 11. — Lampadioteuthis megaleia, basal photophore from left tentacle of type 



[416], seen in optical section, X 15, camera sketch from mount in balsam ; 



chr., chromatophores; phot., photogenic organ; st., stalk of same. 



