slii^htK' i-oiivcw, scparatotl 1>\- a coiisplt-iions suture, u hich is slightly inar^inatcd. Scul|)turc consisting 

 of inipiH'ssiHl spiral sliiac, inert' conspicuous Ix-lou, cspocialK- on the canal. A piiMurc oMoiig- 

 t)vatc, pcrisionic rallicr Muni, with a shallow sinus ahoxc, uiih a lnoad, llai v,iii\ I'xtcrnally 

 anil 5 or () short folds internally, columellar side with a conspicuous layer (jf enamel and 4 

 pustules on the lower half; canal rather wide and deei). 



Ah. 11, lat. 5; apert. all. 5, kit. 2 Mill. 



Mr. Melvili, who luul the kindness to look at this species, says that except in colour 

 it is alike in form to C. anstrina Gask. That species has been described as smooth, with a 

 broad ilcsh-coloured band; even in the worn specimens the spiral striaci are easily to be seen 

 and none of the specimens has traces of an uninterruptetl band, so I must consitler it to be 

 distinct. The sinus or notch of the peristome is of the same character as in C. viarqiiesa Gask. 



12. Cohinibella (Mitrella) eloiigata n. sp. PI. XX, fig. 7. 



Stat. 162. Between Loslos and Broken-islands, West coast of Salawatti. 18 M. Coarse and fine 

 sand with clay and shells, i Spec. 



Shell subulate w'ith long, acute spire, whitish, with a yellowish epidermis. W'horls 9, of 

 which scarcely 2 form a convex nucleus; subsequent whorls flat, with a linear suture, last whorl 

 subangular at the periphery, contracted below and so forming a short canal, slightly directed 

 to the left. Sculpture consisting of undulated growth-striae and a few (about 1 3) spiral grooves 

 at the base. Aperture elongate, angular above, peristome thin, simple, with a large sinus above, 

 columellar margin smooth, with a thin layer of enamel. Canal rather narrow, deep. 



Alt. 10Y2, lat. 3Y2; apert. alt. 4, lat. i^jj Mill. 



This species is of a very simple character and has much puzzled me ; indeed I was irt 



doubt if it ought not to be placed amongst the Plearotoniidae, on account of the large sinus 



and thin peristome; unfortunately the soft parts are wanting or at least not visible in the 



aperture, and as there was but one specimen, I could not destroy it. If the canal were straight, 



it could be located in the Section Atilia. 



V 



13. Cohtmbella (Mitrella) simplex n. sp. PI. XX, fig. 8. 



Stat. 45. 7°24'S., 118° 15'. 2 E. Flores Sea. 794 M. Fine grey mud. 2 Spec. 

 Stat. 88. o°34'.6N., II9°8'.5 E. Makassar-strait. 1301 M. Fine grey mud. 2 Spec. 

 Stat. 178. 2°4o'S., I28°37'.5E. Ceram Sea. 835 M. Blue mud. i Spec. 



Shell oblong-ovate with high but rather blunt spire, transparent, corneous, with irregular, 

 opaque, white lines or flames, which scarcely bear the character of colour markings. Whorls 7, 

 of wdiich about 2 form a nearly bulbous nucleus. Subsequent whorls slightly convex, separated 

 by a conspicuous but shallow suture, which, by the transparency of the shell seems to be 

 marginated, last whorl rounded, slightly contracted below. Sculpture consisting of crowded, in- 

 distinct ribs on about 2 upper postnuclear whorls, remaining- ones smooth, except for very fine 

 growth-striae and occasionally a few spiral striae near the base (only conspicuous in one specimen, 

 scarcely visible in another, both from Stat. 45, entirely wanting in the specimen from Stat. 88). 



87 



