230 Mr. W. E. Hoyle on the 



its being less contracted by spirit. None of the suckers on 

 the lateral arms are enlarged, notwithstanding the sex. The 

 hectocotylus is well developed ; it is broad, and tapers rapidly 

 to an acute point ; in one specimen about seven transverse 

 ridges can be counted in the proximal half of the median 

 groove ; in the distal half and in the other specimen they are 

 indistinct. 



The Surface is perfectly smooth all over. 



The Colour is a pale purplish pink, deeper above than 

 below. 



Hab. Off Barra Grande (Station 122), one specimen, $ ; 

 (Station 237), one specimen, $. 



Eledone, Leach. 

 Eledone rotunda, n. sp. 



The Body is spheroidal, very little longer than broad, and 

 the ventral groove is not marked. The mantle-opening ex- 

 tends one third round the body, ending some distance directly 

 below the eyes. The siphon is slightly tapering, and extends 

 one third the distance to the umbrella-margin. 



The Head is short, nearly as broad as the body, and the 

 eyes are round and rather prominent. 



The Arms are equal and about twice as long as the body ; 

 they are very stout, and taper gradually to blunt points ; 

 their section shows a triangle projecting inwards and a rounded 

 surface looking outwards, the former much more prominent 

 than the latter. The umbrella is wide, extending one third 

 up the arms, a little further dorsally than ventrally. The 

 suckers are comparatively small, closely set, and deeply 

 cupped. There is no trace of a hectocotylus. 



The Surface is perfectly smooth. 



The Colour is dull purple, palest on the body and deepest 

 on the inner surface of the umbrella. 



Hab. The Southern Ocean, 1950 fathoms (Station 157) ; one 

 specimen, sex ? South Pacific, 2225 fathoms (Station 298) ; 

 one specimen, arms only, sex ? 



Eledone brevis, n. sp. 



The Body is short, rounded, and depressed ; blunt behind 

 and deeply grooved below. The mantle-opening extends one 

 third round the animal and terminates immediately below the 

 eyes. The siphon is short, acutely pointed, and extends less 

 than halfway to the umbrella-margin. 



The Head is very short and nearly as broad as the body. 

 The eyes are spheroidal and very prominent. 



