C^ECILIOIDES, SECT. GEOSTILB1A. 45 



unable to see any difference in the shell. The original descrip- 

 tion follows. 



G. caledonica: PL 4, figs. 58, 59, 62.. "Shell imperf orate, 

 fusiform-cylindric, thin, polished, diaphanous, clear-corneous. 

 Apex abruptly rounded, very obtuse; suture hair-marginate; 

 whorls 4, slightly convex, the last slowly descending, slightly 

 more than half the total length. Aperture long-piriform; peris- 

 torne simple, unexpanded, thin, not acute, slightly thickened, 

 the margins joined by a very thin callus; columellar margin 

 having a longitudinal, small, diaphanous, glossy internal lamina 

 giving the appearance of a basal truncation, not reaching the 

 base. Basal margin broadly rounded; right margin arching 

 forward. Length 3.5, diam. 1 mm." (Crosse). 



New Caledonia: Noumea, common in gardens, living in damp 

 places under dead leaves, old wood and on the ground (E. Marie). 



Geostilbia caledonica CROSSE, Journ. de Conchyl. xv, 1867, p. 

 186, pi. 7, f. 4; 1894, p. 301 (p. 144 of separate copies, Faune 

 Malac. N. Caled. ) G ASSIES, Faune Conch. Nouvelle-Caledonie 

 ii, 1871, p. 96, pi. 4, f. 4. PFR. Monogr. vi, p. 244. 



Two specimens from Noumea are drawn in figures 58, 59, 62, 

 pi. 4. They measure 3.7 x 1.2 mm., and 3. 1 x 1 mm. 



Macrospira aperta Guilding has never been described. Too 

 poor and dissimilar outline figures were given with this name 

 by Swainson, without locality, dimensions, or any other par- 

 ticulars. In 1892 Mr. E. A. Smith stated that A. gundlachi 

 and veru were equivalent to aperta; and in 1895 he identified 

 Geostilbia caledonica, Crosse as a synonym of Megaspira (sic) 

 aperta, from the comparison of specimens in the British Museum. 

 In my opinion, M. aperta was not sufficiently defined by 

 Swainson to be recognized. Its identity with C. gundlachi rests 

 upon Mr. Smith's identification of specimens from Guilding, 

 the locality of which is surmised to be the West Indies, but is 

 not positively known. No description of even these specimens 

 has appeared, and Swainson' s figures are extremely crude. 



41. C. BALDWINI Ancey. 



Shell imperforate, very thin, whitish-hyaline or slightly cor- 

 neous, diaphanous, glossy, polished; apex large, obtuse; spire 



