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posteriorly. The mantle is free behind, as in Rossia. The siphon 
is short and slender and with everted margin ; valve 1 
The Head is small and narrow ; eyes not prominent. 
The Arms are long and conical, with two series of pedunculate 
spherical suckers. The tentacles exactly resemble the arms at their 
origin ; the clicb is absent 1 
The Gladius has not been removed from the single example. 
Fig. 1 . — Promachoteuthis megaptera, Hoyle. 
Promaclioteuthis megaptera , Hoyle. 
Promachoteuthis megaptera , Hoyle, loc. cit.; also Ann. and Mag. Nat. 
Hist., ser. 5, vol. xvi. p. 182, 1885. 
The Body is short, barrel- shaped, rounded behind ; the fin is large, 
transversely elliptical, and extending beyond the end of the body 
posteriorly ; each half is wider than long. The mantle-margin is 
transversely truncated. The mantle-connective consists of a linear 
ridge on either side, fitting into an almond-shaped depression at 
either side of the base of the siphon , which is short, slender, and has 
the distal margin, everted like the neck of a flask ; the specimen 
was so small and indifferently preserved that it was not opened to 
ascertain whether a valve was present. 
The Head is very small and narrow, almost the whole of its sides 
being occupied by the eyes , which are not prominent, but covered 
with a transparent membrane, and with a distinct pore in front of 
and below each. 
The Arms are unequal, the fourth being the shortest (considerably 
so on the right side) ; the first, second, and third are subequal ; they 
are on an average about the same length as the body, smoothly 
