62 



PKOCEEDINGS OF THE ACADEMY OF 



[Feb., 



long as the mantle; unequal, the order of length distinctly 3, 4, 2, 1. 

 Umbrella wanting. Ventral arms with a frill-like keel on the outer 

 angle; keel of third arms confined to distal portion, and obscure or 



o 



Fig. 19. 



Fig. 20. 



Fig. 19. — Megalocranchia pardus, part camera outline of right eye of type [415], 



ventral aspect, X 5J; phot. 1 , phot. 2 , photogenic organs. 

 Fig.. 20. — Megalocranchia pardus, outline of funnel organ [415], much enlarged. 



wanting on the two dorsal pairs. All the arms have a delicate 

 trabeculate swimming membrane on either margin of the sucker- 

 bearing area, but this attains much its best development on the 

 third pair. Suckers biserial, closely placed in each row, but the 

 series slightly separated from one another on all but the ventral 

 arms, where they are relatively close together; number of suckers 

 varying from 14 pairs on one of the dorsal arms to 16| pairs on the 

 ventral arms. Sucker apertures wide, the horny rings weakly den- 

 tate on the upper semicircumference and with only rudiments of 

 teeth below; even at their best, the denticles appear rather as 

 strong crenulations than teeth; about 18 were counted on a ring 

 from one of the larger suckers of the right third arm (fig. 21). 



Tentacles short, stout, the longer about a third again as long as 

 the longest arms, or about two-fifths the length of the mantle; 

 larger and thicker than any of the arms. Clubs slightly expanded; 

 armed with four crowded rows of suckers, largest near the middle, 

 but diminishing in size both distally and proximally, where they 

 continue down the stalk a little more than half way to the base. 

 A horny ring from one of the largest suckers on the club shows about 

 26 conical, round-pointed, sometimes curved teeth, which are smallest 

 on the inferior margin (fig. 22). 



Color of preserved specimen brownish cream; chromatophores 

 brown; eyes bluish black; subocular photophores bronze, sur- 

 rounded by a bluish ring. Chromatophores large, scattered, elongate 



