160 THE VOYAGE OF H.M.S. CHALLENGER. 



The Tentacles are comparatively short, being not quite so long as the body ; the 

 stems are subtriangular. The club occupies less than one-third of the length, and has a 

 protective membrane at either side of the suckers and a distinct web on the outer aspect. 

 The large central suckers are eight to ten in number, and nearly twice the diameter of 

 the lateral ones (fig. 9) ; the proximal group consists of about ten, whUe the distal 

 portion bears four series of diminishing suckers. The homy ring bears long, distant, 

 blunt pointed teeth, about twenty-four in the largest suckers (fig. 10), proportionally 

 fewer in the smaller (fig. 11), which are much larger in the distal and external portions 

 of the ring respectively. 



TJie Surface is smooth. 



The Colour is pale yellowish, spotted with brownish-purple and red chromatophores. 



TJie Gladius (fig. 12) is of the usual form, the narrow anterior portion being 

 comparatively broad and about one-fourth of the total length. 



The description of this species given in the Preliminary Report has been modified in 

 accordance with a drawing of an adult specimen in the Copenhagen Museum, which I 

 received from Professor Steenstrup, and which is reproduced in PI. XXVII. ; the 

 Challenger specimens were so small that it was not worth while to give dimensions of 

 them. 



Loligo (?) ellipsura, Hoyle (PL XXIV. figs. 1-6 ; PL XXV. figs. 11-15). 



1885. Loligo ellipsura, Hoyle, Diagnoses, IL, p. 182. 

 1885. „ „ Hoyle, Prelim. Eep. IL, p. 285. 



Habitat. — Station 313, off" Cape Virgins, Patagonia, January 20, 1876; lat. 52° 20' 

 S., long. 67° 39' W.; 55 fathoms ; sand. One specimen, $ . 



The Body is elongated, widest anteriorly, and tapering gradually to an acute point 

 behind. The^n is comparatively short, only one-third the length of the body, elliptical, 

 slightly broader than long. The mantle-margin passes almost straight across the back, 

 except where a long narrow median process juts out over the head (PL XXIV. fig. 2) ; 

 it is slightly sinuate ventrally (fig. 1). The siphon is short and blunt. 



The Head is short and very nearly as broad as the body ; it has the usual auricular 

 crest and pre-ocular pore. 



The Arms are unequal, the order of length being 3, 4, 2, 1, and about one-third the 

 length of the body ; the first has a distinct web on its dorso-median angle, and the third 

 a still broader web on its outer aspect, passing back nearly as far as the eye, where it 

 becomes connected with another passing up the dorso-lateral aspect of the fourth. The 

 suckers (figs. 4,5) are in two series, pedunculate, oblique, notched distally, and somewhat 

 larger on the lateral than on the other arms. The horny ring bears from five to seven 



