^Challenger'' Cephalopoda. 183 



gradually to an acute point behind. The ^/i 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 ; it is slightly sinuate ventrally. 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 are in 

 two series, pedunculate, oblique, notched distally, and some- 

 Avhat larger on the lateral than on the other arms. The 

 horny rings bear from five to seven large pointed teeth in 

 their distal portion, but are smooth proximally. The hecto- 

 cotylus is not present. The buccal membrane has the usual 

 seven points, each of which carries two or three small suckers. 

 The outer Up is thick and marked with radial grooves ; the 

 inner lip was not seen. 



The Tentacle is slender, approximately cylindrical, and 

 about two thirds the length of the body ; its terminal fourth 

 is occupied by the cluh, which is but little expanded, and has 

 a delicate protective membrane along either side of the inner 

 surface and a well-marked web externally. The large median 

 suckers are about ten in number, and about twice as large as 

 the alternating lateral ; the proximal are about twenty, and 

 gradually increasing ; the distal occupy nearly one half the 

 club, and are in four series diminishing. The horny rings of 

 the largest suckers have about twenty-four distant square 

 pointed teeth, much longer on the distal margin ; the lateral 

 ones have about half as many similar teeth on the outer 

 margin, and the terminal suckers are armed in the same way. 



The Surface has been almost entirely denuded of skin. 



The Colour appears to have been pale buff with purple 

 chromatophores. 



The Gladius has not been extracted. 



Hab. Off Sandy Point, South America (Station 313), 

 55 fathoms. One specimen, apparently $ . 



Loligo galathecBj Steenstrup, MS. 



The Body is about three times as long as broad, cylindrical 

 anteriorly, and pointed behind. The Jin is rather less than 



