200 Mr. W. E. Hoyle on the 



its length, very thick (clorso-ventrally) , and bluntly rounded 

 behind. The^'ws are one fourth as broad as the body and placed 

 much nearer the dorsal than the ventral surface ; they com- 

 mence 2-3 millim. from the anterior margin and are connected 

 by a narrow fillet behind ; a slightly raised ridge passes down 

 the ventro-lateral aspect of the body, similar to that seen in 

 many specimens of Octopus and Eledone (possibly due to 

 contraction). The mantle-margin projects very slightly dor- 

 sally and is a trifle emarginate opposite the funnel : the con- 

 nective cartilages are deeper than in most species of Sepia j 

 but there is no distinct knob as in Sepiella. The siphon 

 reaches up to the depression between the ventral arms. 



The Head is broad, and the eyes prominent. 



The Arms are subequal, in order of length 3, 4, 2, 1 ; they 

 are rather more than half as long as the body and distinctly 

 three-sided, having a ridge on the outer side of each, broadest 

 on ihe ventral ones ; they taper evenly to very fine points ; 

 the inner surface of each is roughly papillate and has hemi- 

 spherical depressions into which the suckers are retracted. 

 The suckers are in four series throughout, almost hemisphe- 

 rical, not very oblique, and marked with meridional grooves : 

 the horny ring bears irregular square teeth. The hectocotylus 

 is not developed. The umbrella is larger than usual in the 

 genus, reaching on an average about one third up the arms ; 

 the huccal membrane has seven not very prominent points, and 

 there is a spermatic cushion as usual : the outer lip is very 

 thin, the inner thick and papillate. 



The Tentacle is about as long as the body, stout, indistinctly 

 three- sided, and tapering. The club is short and but little 

 expanded, with a narrow protective membrane on its outer 

 side ; the sucker-bearing area is, as it were, undermined on 

 its inner aspect by a deep groove or fissure, and internally 

 to this again is a broad fin which reaches down the tentacle 

 for a distance exceeding half the length of the club. There 

 are three suckers much longer than the rest, whereof the middle 

 one is the largest and the proximal the next, placed on stout 

 peduncles arising in deep depressions ; towards the outer side 

 of the club is a series of about four medium-sized suckers, 

 and beyond these again one or two series of minute ones. 

 The horny rings appear smooth under a powerful lens. 



The Surface is smooth in general, but there are a few 

 irregular papillse in the ventro-lateral region. 



The Colour is a dull grey, with indications of annular 

 markings on the back. 



The Shell has a rhomboidal outline^ with rounded anterior 

 and lateral angles ; the chitinous margin is narrow, widest 



