W. E. HOYLE—REPORT ON THE CEPHALOPODA. 41 
genital gland was in a very rudimentary condition, but I believe the specimen 
to be a male. 
The Umbrella is but little developed, especially between the ventral arms. 
The buccal membrane has the usual seven points, five of which bear one sucker 
each. The outer lip is thin with close-set radial grooves ; the inner thick and 
papillate. 
The Tentacles are about as long as the head and body together ; the stem 
is rounded, with three not very prominent angles. The club (figs. 4 & 5) is 
broad, flattened and crescent-shaped ; on the dorsal margin is a rather broad 
marginal web; on the outer surface a series of shallow parallel grooves. 
The suckers are in eight rows, the central ones being the largest and of about 
the same size as those on the arms; they gradually diminish towards the ends 
and the sides, the marginal ones being about half the diameter of those in the 
middle. The horny rings of the largest suckers (fig. 6) are somewhat larger 
than those of the arms; there are sixteen bluntly pointed teeth on the distal 
semicircumference, many are split as if undergoing bifurcation ; the proximal 
half-ring has about sixteen small, blunt, rounded teeth. The papillary area is 
shown in fig. 7. 
The Surface is smooth. 
The Colour dull purplish grey, paler and more yellow below. 
The Shell in the present example had undergone some maceration and broke 
in the process of extraction, but it has been admirably depicted by Férussac 
and d’Orbigny, and the following description is based partly on their figures. 
It is elongate oval in outline, the greatest breadth being nearly in the middle ; 
the free chitinous margin is everywhere narrow, broadest in the anterior half, 
it is continuous and expanded around the hinder end, much as in the genus 
Sepiella, and there is no trace of a spine. The inner cone is shallow, its limbs 
slender and extending only about one-fourth the length of the shell. The 
dorsal surface is covered with minute rounded granules. The ventral surface is 
elevated into a large, prominent, rounded keel, which rises gradually from the 
posterior hollow of the shell, reaches its maximum height a little in front of 
the middle and sinks more rapidly towards the anterior end; the last loculus 
has an index of 37. It was not possible to make out its hinder boundary exactly, 
as the shell had become somewhat macerated and was injured in removal. 
Dimensions. 
Find of body to mantle margin .............5....... 40 mm. 
Hind. Of Dede tore ye) .e sant Sseecs ocesasies. tla sais. ls tio 43 
rea culak olagloo diye) se mucete arse tase sala lls. sac 24. 
Breadth oie nead Yee ee cmmactcra cane tde heres <2 hss 22 
Bigeadit lth Off Miia wasn pense ayes veisreciaa aes saiat 3 to 4 
Diameter of largest sucker on sessile arm......... 0-7 
Diameter of largest sucker on tentacle ............ 0-7 
LINN. JOURN.—ZOOLOGY, VOL. XXXI. 4 
