322 LEPTINARIA, S.-G. NEOSUBULINA. 



tion is only 5 mm. long (instead of 15), its diameter 3 (in- 

 stead of 5) , the aperture 2 long and iy 2 i n diameter ; whorls 

 barely 5 (instead of 7-8). The shell is distinctly perforate 

 (this not being the case in L. elisce], a character not men- 

 tioned by Canon Tristram; the columellar margin is much 

 more feeble, and the spiral winding fold is separated by a 

 light depression from the proper columellar margin. Al- 

 though I am not quite sure that these specimens belong to 

 the same species, I give, nevertheless, a figure of one of 

 them" (v. Mts.). 



Section Neosubulina E. A. Smith. 



Proc. Malac. Soc. London, iii, p. 115 (December, 1898), for 

 N. harterti. 



Shell imperf orate, turrite, of 8 to 10 convex whorls; aper- 

 ture small, with the columella more or less truncate, and 

 having a long entering parietal lamella. Radula with small 

 central and tricuspid lateral teeth. Type L. harterti. 



This group differs from typical Leptinaria only in its tur- 

 rite instead of ovate shape ; and from the long Leptinarias it 

 differs by having a well developed parietal lamella. The 

 dentition is practically the same as that of Leptinaria. I 

 am unable to follow Mr. Smith in giving the group generic 

 rank. Its mode of reproduction is unknown. 



42. L. GLOYNII (Gibbons). PI. 47, fig. 19. 



"Shell subcylindrical, elongate, narrow, rather thin, semi- 

 transparent, dull yellowish-horn color, closely and rather 

 coarsely sti inte by lines of growth ; epidermis thin and dis- 

 tinct; whorls 9-10, flattened, the first 4 gradually increasing 

 the body-whorl rather the longest, the middle turns equal in 

 size ; spire shortly pointed ; suture narrow, well marked ; 

 aperture ovate, rounded in front, narrow and angulate be- 

 hind, outer lip thin and direct, gently curved, columella 

 somewhat callous, arched with a sharper curve, ending 

 abruptly a little behind anterior end of aperture ; a thin 

 lamina winds spirally down axis of shell, appearing in the 

 aperture as a low, thin tooth, situated rather behind the 

 middle of the columella. Length 13, diam. 3 mm. Animal 

 pale grey, tentacles darker grey'" (Gibbons). 



