26 3 



Fam. Cancellaridae. 

 Cancellaria Lamarck. 



i. Cancellaria (Mcrica) nassoides n. sp. PI. XVIII, fig. 9. 



Stat. 256. 5°26'.6S., I32°32'.5 E. Near Kei-islands. 397 M. Greyish green mud. 1 Spec. 



Shell elongately-ovate, imperforate, spire elongately-turreted, dull brown. Whorls 7 1 /,,, 

 convex, separated by a very deep suture; tvvo apical whorls smooth, subsequent whorls first 

 with 3 strong, spiral lirae and thinner intermediate ones ; there are four lirae on the penultimate 

 whorl and 6 intermediate ones, of which 2 at the suture. The lirae are crossed by more remote 

 rounded ribs, having sometimes the appearance of varices, 17 in number on last whorl, the lirae 

 form small nodules in crossing the ribs. Moreover the shell is covered with fine striae, crossing 

 the lirae and rendering them slightly crenulate. Aperture small, ovate; outer lip regularly arched, 

 with 7 short lirae, at some distance from the margin. Columellar margin with a thin, yellowish 

 white layer of enamel, not concealing the sculpture, with 3 strong plaits of which the upper 

 ones not very oblique, with a perpendicular fold, at about a right angle with the plaits ; basal 

 plait more oblique, bordering the large, shallow sinus. No umbilicus but an umbilical chink. 



Alt. 16 1 /,, lat. 10 ; apert. alt. 7, lat. 4 1 /, Mill. 



I know with species with which to compare this new one ; if seen on the dorsal side, one 

 might take it for a Nassa. As the only specimen is a dead shell, I am not certain that it 

 has really lived at the recorded depth. 



2. Cancellaria (Nar 011a) macrospira Adams and Reeve. 



Adams & Reeve. Voy. Samarang. Moll. p. 41, PI. 10, fig. 2. 



Reeve. Conch. Ie. Vol. X, Cancellaria, fig. 50. 



LöBBECKE. Martini-Chemn. Conch. Cab. Ed. II, Vol. IV, Cancellaria, p. 56, PI. 16, fig. 7, 8. 



Tryon. Man. of Conch. Vol. VII, p. 76, PI. 4, fig. 6~. 



Stat. 153. o°3'.8N., I30°24'.3E. Bougainville-strait. 141 M. Fine sand, coarse sand with dead 

 shells. 1 Spec. 



The specimen is still small ; as it is quite fresh and even seems to contain part of the 

 soft parts, it has probably lived at the considerable depth. 



3. Cancellaria (Trigonostoma) bicolor Hinds. 



HlNDS. Zool. Voy. Sulphur. Moll. p. 43, PI. 12, fig. 13, 14. 



Reeve. Conch. Ie. Vol. X, Cancellaria, fig. 29. 



Löbbecke. Martini-Chemn. Conch. Cab. Ed. II, Vol. IV, Cancellaria, p. 87, PI. 22, fig, 3, 4. 



TRYON. Man. of Conch. Vol. VII, p. 79, PI. 5, fig. 86; PI. 6, fig. 89, 90- 



Stat. 258. Tual, Kei-islands. 22 M. Lithothamnion, sand and coral. 1 Spec. 



The only specimen is of a light colour, probably bleached, and has a rather juvenile 

 appearance, the peristome being thin, the teeth in the upper part of aperture are wanting; as 



17 



SIBOGA-EXPEDIÏIE XLIX 1 */. 35 



