I- 1 



i in iis media n part, columellar margin strongl) contorted, witli a 

 thin layer of enamel. 



. apert. alt. 2 1. lat. 6 Mill. 

 1*1 ies is verj peculiar l>y its shape and sculpture. I find no allied forms. 



u/ii brachytoma n. sp. PI. XXVII, fig. i i. 



43'.i S., . Timor-sea. 828 M. nud. 1 Sj 



Stal ■ I . Hn M. Fine grey mud. 1 Spec. 



Shell elongately fusiform, witli long spire and short canal, strong, white under a greyish 

 epidermis. Nucleus wanting, remaining whorls 8, scarcely convex, their upper pari 1 ccavated, 

 I by a conspicuous, waved suture; sculpture consisting of strong, rounded ribs, scarcely 

 appreciable in the ation, 11 in number on last whorl, below the suture are short folds, 



mainly corresponding u> the ribs, with an intermediate one in the interstices; of spirals a stronger 

 one at the limit between ribbed part and excavation, making the ribs slightly tubercled, and 

 2 nr 3 fainter ones lower on; base of last whorl with about 10 grooves; moreover the shell 

 is reticulated by numerous unequal, but always much finer spirals and growth-striae, Aperture 

 oblong, angular above, ending below in a wide, short canal, slightly directed to the Ieft; peri- 

 stome stron ircely with a sinus above, which is uncommonly shallow, columellar margin 



moderately flexuous, with a rather thick, smooth layer of enamel. 



Alt. 47. lat. ij' ; apert. alt. 1 7 1 /.,, lat. 4 Mill. 



This species lias much puzzled me; if the columella had been folded, I should have 

 taken it for a Mitra\ however Mr. Smith, who had the kindness to compare it, agrees with 

 me that it is a Surcu/a, but not typical; the specimen from Stat. 2S4 is still ver}- young, but 

 evidently belongs to the same species. I know no species that is allied. 



7. Surcula obtusigemmata n. sp. PI. XXVII, fig. 12. 



Stat. 76. ; 22'. 1 S., 1S0 [6'.qE. Makassar-strait. 2029 M. Fine grey mud. 1 Spec. 



Stat. 137. Channel between Makjan and Halm. du-ra. 472 M. Fine, dark muddy sand. 2 Spec. 



Stat. 271. 5 4''. 7 S., i34°o'I-:. Arafura-sea. 1788 M. Bluish green mud. 1 Spec. 



Shell broadly fusiform, with pyramidal spire and rather long, slender canal, thin, yellowish- 



grey. Nucleus of largest specimen wanting, remaining whorls 6, not very convex, but apparently 



so by a row of coarse, obtuse, rounded beads, near the base of upper whorls and the peri- 



phery of last whorl, where they are 14 in number; a second row of smal! tubercles, rounded 



in upper whorls, having the character of oblique folds on lower ones, runs just below the deep 



suture. on a subsutural rib; lower on the shell is lirate, 2 faint lirae in the interstices of the 



peripheral beads, 2 strong ones below the beads of last whorl and numerous fainter ones on 



i canal; the shell is covered with very fine growth-lines, last whorl strongly attenuated 



Aperture oval, angular above, ending in a rather long, narrow canal below; peristome 



thin, with a wide, rather shallow sinus above, then strongly protracted; columellar margin rather 



[lu, directed to the Ieft near and along l al, with a thin layer of white enamel. 



Alt. 22 1 /. lat. o ; apert. alt. i, s '/,. lat , Mill. 



60 



