REPORT ON THE CEPHALOPODA. 137 



Sepia recurvirostra {?), Steenstrup. 



1875. Sepia recurvirostra, Steenstrup, Hemisepius, pp. 475, 479. 



Habitat.— ^t&tion 207, ofF Tablas Island, January 16, 1875; lat. 12° 21' N., 

 long. 122° 1.5' E. ; 700 fathoms. One broken shell. 

 Eastern Archipelago (Copenhagen Museum). 



A much mutilated shell was brought up in the trawl at the above locality ; 

 unfortunately the posterior extremity, which furnishes the most striking character of 

 Professor Steenstrup's species, was wanting, but still the general form of the body of the 

 shell and the curvature of the lines in the striated area resemble that type more than any 

 other known to me, and as the locality is corroborative of this view I refer it with a query 

 to that species. 



Sepia sulcata,^ Hoyle (PL XIX. figs. 1—13). 



1885. Sepia sulcata, Hoyle, Diagnoses II., p. 192. 

 1885. „ „ Hoyle, Prelim. Eep. II., p. 296. 



Habitat. — Station 192, off the Ki Islands, Arafura Sea, September 26, 1874 ; 

 lat. 5° 49' 15" S., long. 132° 14' 15" E.; 140 fathoms; blue mud. One specimen, ^ . 



The Body is cylindrical in its anterior fourth, then tapers gradually backwards, and 

 is pointed behind. The fins are one-fifth the breadth of the body, commence 2 mm. 

 from the anterior margin of the mantle, and approach within 5 mm. of each other 

 posteriorly ; the mantle-margin reaches far over the head dorsally, and is evenly 

 truncated below. The siphon does not extend up to the interbrachial space. 



The Head is broad and the eyes very prominent ; in the only specimen it is much 

 retracted into the mantle. 



The Arms are subequal, the order of length being 4, 3, 2, 1 ; they are one-third 

 the length of the mantle, and taper gradually to slender points ; the first are thin and 

 rounded, the fourth flattened, each has a distinct ridge on the outer side, which in the 

 fourth expands to a broad membrane. The suckers are in two series in the first and 

 second arms, but with a tendency to form four series in the others, more especially in 

 the distal portions ; they are pedunculate and very oblique (fig. 7), and the margin is 

 marked with meridional grooves and has a deep distal notch ; the horny ring is 

 small, smooth, and surrounded by a papillate area (fig. 8). The left ventral arm is 

 hectocotylised (figs. 4, 5) ; along three-fourths of its length runs a groove with convex 

 bottom, bounded on either side by a narrow fillet ; on either margin of the groove is a 

 row of minute suckers, which are larger and more distinct, and even form two series on 



^ So named from the form of the hectocotylised arm. 



(ZOOL. CHALL. EXP. — PAET XLIV. — 1886.) Xx 18 



