178 OPEAS, NEW CALEDONIA, PHILIPPINE IS. 



Whorls 5, slightly convex, regularly increasing, the last form- 

 ing half the total length; suture deep, apex rather obtuse. 

 Aperture ovate-rounded; columella arcuate, calloused above, 

 slightly spreading below ; peristome continuous, simple, acute. 

 Length 3.5, diam. 2 mm. (Gass}. 



New Caledonia: Prony Bay (Rossiter). 



Bulimus (Subulina) pronyensis GASS. Journ. de ConchyL 

 1879, p. 126; Fauna Conchyliologique terr. et fluv. de la 

 Nouvelle-Caledonie iii, 1880, p. 43, pi. 3, f. 18 (in Actes Soc. 

 Linn, de Bordeaux, vol. 34) . 



A single specimen, now in Gassies' collection was found 

 inside the shell of Diplomplialus megei. Its most prominent 

 feature is the callous thickening of the parietal wall near the 

 posterior angle of the aperture, which if normal indicates 

 that the species is not an Opeas. 



80. 0. BLANCHARDIANUM (Gassies). PL 24, fig. 33a. 



Shell imperforate, elongate, thin, corneous, pale, covered 

 with a very thin cuticle, very minutely striated longitudin- 

 ally. Whorls 8, rounded, gradually increasing, the apex 

 papillar, the last whorl angulate at the base; suture deep, 

 crenulate. Aperture ovate, columellar margin covering the 

 umbilical crevice. Peristome simple, slightly thickened. 

 Length 8, diam. 3.5 mm., diam. at summit 1.5 mm. (Gass.). 



New Caledonia: in the interior (coll. Raynal). 



Bulimus blanchardianus GASS., Fauna Conch. Nouvelle- 

 Caledonie, 1863, p. 53, pi. 6, f. 1. Subulina f Uanchardiana 

 Gass., CROSSE, Journ. de Conch. 1894, p. 300. 



"It is especially remarkable for the nearly right-angled 

 lower margin. ' ' A form known only by the original descrip- 

 tion and figure which may have been based upon a broken 

 or abnormal shell, or possibly upon a marine form. 



For other New Caledonian species see under 0. gracile. 



X. Philippine and Caroline Island Species. 



81. 0. SEMPERI (Hidalgo). PI. 19, fig. 28. 



Shell slightly perforate, oblong-turrite, thin, lightly striatu- 

 late, pellucid, glossy, corneous. Spire elongated, the apex 



