198 Mr. W. E. Hoyle on the 



stant papillae on one side of the ventral surface and below the 

 eye. 



The Colour is a pale yellowish grey, darker above. 



The Shell is oval in outline, broadest anteriorly to the middle, 

 tapering somewhat rapidly in front and ending in a semi- 

 circle; posteriorly it tapers gently, and, then rounding off, 

 ends in two almost straight lines, which meet at a right angle 

 at the base of the spine. The chitinous margin extends but 

 slightly over the dorsal surface, which shows two grooves 

 diverging as they pass forwards, separating three ribs, and is 

 covered with rounded papillge arranged in curves parallel to 

 the anterior margin. The ventral surface has a rather deep 

 and broad median groove : the last loculus occupies one third 

 of its extent, and is bounded posteriorly by a wavy line with 

 three parts ; the striated area is hollowed, so that this part of 

 the shell is thin : the inner cone commences by two limbs, 

 which arise halfway along the striated area, curve outwards, 

 and unite below the posterior apex with a broad chitinous 

 band passing from one side of the shell to the other and 

 forming a rather deep outer cone : the spine is short (but has 

 been broken off) ; it bends slightly upwards and has a narrow 

 longitudinal keel on its ventral surface. 



Hab. South of Papua (Station 188), in 28 fathoms. Two 

 specimens, $ . 



Septa cultrata, Steenstrup MS. 



The Body is elongated, broadest about the middle of its 

 length. The fns are rather narrow, about one fourth the 

 breadth of the body, commencing 2 millim. from the anterior 

 edge of the body and approaching within 5 millim. of each 

 other posteriorly ; the left is somewhat broader than the right. 

 The mantle-margin extends far over the head dorsally and is 

 not emarginate but slightly undulating ventrally. The siphon 

 is short, terminating far short of the depression between the 

 ventral arms. 



The Head is broad, and the eyes very prominent. 



The Arms are subequal, the order of length being 4, 3, 

 1, 2,- they are one fourth the length of the body, all are 

 flattened and taper evenly to fine points. The suckers are 

 in four series, except in the right dorsal arm, where they 

 appear to be in two, probably owing to its state of extreme 

 compression; they are of medium size, many are deeply 

 notched proximally and distally, and provided with fine meri- 

 dional grooves on the margin : the horny ring is smooth and 

 surrounded by a papillary area. The hectocotylus is not 



