4, ME. E. S. GOODEICH ON A COLLECTION OF 



The mantle is of a narrow oval shape ; the strong fins arise a little way below the 

 mantle-margin, and do not join at the ajiex (fig. 4). The siphon is thick-walled, with a 

 somewhat crescentic opening; it does not reach to the junction of the ventral arms. 



The arms have broad compressed bases (especially the ventral arms, which are 23 mm. 

 broad), without well-developed keels. The inner surfaces, bounded on either side by 

 narrow lateral membranes, bear four rows of moderate-sized suckers, largest on the 

 lateral arms, where they attain a diameter of 2 mm. On the distal half of the arms the 

 suckers become extremely small. The horny ring of the arm-suckers has a narrow 

 paj)illary area, and a margin smooth on the proximal two-thirds of its circumference, 

 and armed with very irregular teeth on the distal third (fig. 8). 



The stem of the tentacle is compressed, forming a sharp edge on the outer surface. 

 The club is furnished as usual with a wide keel springing from the upper surface. 

 Svickers of very unequal size are jjlaced in four rows on the proximal region ; the largest 

 attain a width of 4 mm. in the two central rows, and are provided with smooth horny 

 rings. The suckers diminish rapidly in size at either end ; these and the suckers of the 

 outer rows have horny rings armed all round with numerous sharp teeth (fig. 7). In the 

 distal region the small suckers are closely packed in six or seven rows, and near the 

 extreme apex two suckers stand out from the rest on the upper margin as if utilized for 

 some special purpose (an arrangement I have noticed in Sepia officinalis). 



The buccal membrane has seven lobes provided with a few suckers, the horny rings of 

 which closely resemble those of the arm-suckers. 



A small Aveb is developed at the bases of the arms except of the ventral jiair. 



The mandibles are shown in fig. 6. 



The long oval pen of this Sepia is very remarkable (fig. 4). Above, the rough 

 calcareous surface raised in three slight ridges narrows anteriorly, and is bounded on 

 either side by a broad expanse of the chitinous margin {ch.m.) (in places about 1 cm. 

 broad). Below, the striated area formed by the loculi reaches far up (loc), and is marked 

 in the centre by a longitudinal groove. The margin of the inner cone is produced 

 forwards and reflected over the posterior loculi, to which it is closely applied (i.e.). 



The apical spine has unfortunately been broken off ; it appears to have been small. 



It is not without hesitation that I have placed these specimens in a new species, as 

 they closely resemble Sepia Bouxii, d'Orb., described in d'Orbigny and F^russac's 

 monograph from the Indian seas (5). 



There are, however, several characters in which the two species differ. "Whereas 



5. Mouxii is of a " forme generale racourcie," has very wide fins, and toothed rings to all 

 the suckers of the tentacular club, S. singalensis is of narrow shape, with moderate fins, 

 and smooth rings on the largest suckers. On the other hand, their pens are remarkably 

 similar. 



The ground-colour of the best specimen is pale brown, speckled vnih. slate-coloured 

 chromatophores on the lower surface, and conspicuously striped with broad dark bands 

 on the ixpper surface of the mantle, head, and arms. 



The hectocotylized region is short and sitviated about halfway up the left ventral arm. 



