240 Records of the Indian Museum. [ VoL. XT, 
organs on the ventral surface of the mantle. A few organs are 
visible oa the siphon and they form nine rows on the ventral sur- 
face of the head. Three rows are present on the ventral arms and 
a single organ is visible on the third left arm. About thirty sur- 
round one eye, those on the ventral surface being most conspicu- 
ous. The first right arm possesses eleven hooks and twelve suckers, 
and the fourth has sixteen hooks and the same number of suckers. 
The rings of the arm suckers have twelve to fourteen blunt and 
rather long teeth, separated by about the width of their base on the 
distal edge of the ring. Goodrich (1896, pl. 2, fig. 42) represents 
the ring as being toothed all round. Pfeffer (/.c., p.137) has, how- 
ever, suggested that Goodrich may have mistaken some papillae for 
teeth as it is frequently very difficult to distinguish them unless 
the horny ring is isolated from the sucker. This specimen has 
more tentacular hooks and suckers than the type, but the fact 
that these vary on the different clubs shows that no hard and 
fast rules can be laid down as regards this. One tentacle has a 
connective apparatus of five suckers and six papillae, and along 
the ventral margin of the club are three much-curved hooks and 
the sockets of two others, the central hook being the largest. Nine 
large suckers occur near the hcoks, each having a horny ring 
with about thirty teeth (separated by about the width of their 
base) on its circumference. The distal part of the club has fifteen 
or sixteen rows of very small suckers placed four in a row and 
becoming very minute towards the tip, their rings being armed 
with many teeth. The other tentacle has a connective apparatus 
of four suckers and eight papillae, and the club shows five hooks 
and the socket of a sixth, as well as eight large suckers, and 
fifteen or sixteen rows of minute suckers on the distal portion. 
Specimen M **’° has five hooks on the only club present. 
The ventral surface of the mantle shows many luminous organs on 
the median line, and elsewhere, but they are not arranged in any 
definite order, and a few trespass a little on the dorsal surface. 
Besides the three rows on the ventral arms, a single row orna- 
ments each of the third arms. The eight-angled buccal mem- 
brane is pale and dotted with red chromatophores. The funnei 
organ closely resembles that of A. tvigonura, Berry (1914, p. 329, 
text-fig. 33), and consists of a median A-shaped dorsal pad and 
broad ovate ventro-lateral pads, a small valve being also present. 
The luminous organs on the funnel fail, however, to show the 
triangular arrangement described by Berry. The small specimen 
M **?* seems to be a male, butit is not in very good condition, 
and there is no trace of a hectocotylus. Four hooks are present 
on one club and five on the other. Luminous organs are visible 
on the third as well as on the fourth arms, and are very distinct 
round each eye-opening, but the eyes, as is the case with the 
other specimens, are injured. 
The principal dimensions in mm. are given below. 
