AND ACCOUNT OF A NEW SPECIES OF SEPIOLA. 85 
respondents there, which, though agreeing in general form with the European species, 
presents peculiarities sufficiently marked and important to entitle it to be regarded as 
the type of anew species. Its proportions are massive, short, and broad ; and its colour 
is a deep purplish brown, extending to the points of the arms, and produced by large 
closely set spots of that colour. It measures three inches from the base of the body to 
the point of the arms, being about twice the ordinary length of the European species ; 
the two tentacula themselves measure three inches and three lines in length. The length 
of the mantle behind is one inch and one line, the length of the head is six lines, and 
that of the longest arms one inch and three lines. The body measures one inch and one 
line in breadth ; and the breadth of the head across the pupils is one inch. The tentacula 
extend from within two muscular folds, connecting the third to the fourth pair of arms 
in front, as in the Sep. vulgaris: they are small and cylindrical to near their extremity, 
where they expand, and present a villous surface, but have no suckers developed. The 
suckers of the arms are large and irregularly crowded, of a spherical form, and placed 
on long thick peduncles. In place of being in two alternate rows, as in Sep. vulgaris, 
the suckers are here? crowded seven or eight deep on the broadest part of the arms: 
each sucker is provided with a circular dark-coloured osseous ring at its orifice. The 
arms are proportionally much thicker and shorter than in Sep. vulgaris; and hence 
they present a much broader inner surface for the attachment of numerous rows of 
suckers. From this contracted form of the cephalic arms, by which it differs so 
much from the European species, I have termed it Sep. stenodactyla. In some parts of 
the arms the crowded arrangement of the suckers is seen to depend on the zig-zag 
direction taken by the rows of peduncles on each side. The coloured markings on the 
outer surface of the arms are in the form of transverse bands ; in Sep. vulgaris they are 
generally minute detached spots. The white band around the upper margin of the 
mantle, the lengthened form of the syphon and the position of its valve, the form and 
the subdorsal direction of the eyes, the shape and the position of the dorsal fins, and 
the rounded termination of the mantle, are like those of the common species. This 
Indian species, however, is more than four times the size of any European specimen 
which I have seen, and the form of the mantle is more ventricose. The specimen, 
being the property of the Society, and the only one obtained, was not dissected. 
PLATE XI. 
Fig. 1. Sepiola stenodactyla, back view, natural size. 
Fig. 2. Sepiola stenodactyla, front view, natural size. 
Fig. 3. Sepiola vulgaris, back view, natural size. 
Fig. 4. Sepiola vulgaris, front view, natural size. a. a. muscular fold extended be- 
' Plate XI. figg. 1. 2. 2 Fig. 6. a. 
