36 HELIX. 



H. CALLIOPE, Crosse. PL T, figs. 9, 10. 



Rather widely umbilicated, thin, with subflexuous, minute, 

 rather distant costulations, yellowish white with longitudinal 

 markings of dark brown, suture impressed ; whorls 5, rather 

 flattened, the last not descending, depressed, the base subplanu- 

 late. Diam. 6'5 mill. 



New Caledonia. 

 H. VETULA, Gassies. PI. T, figs. 11, 12. 



Rather widely umbilicated, rather thin, very closely costulate- 

 plicate above, radiately striate below, brownish corneous, suture 

 deep ; whorls almost 6, convex, slowly increasing, the last scarcely 

 wider, not descending; margins of aperture remote. Diam. 4 mill. 



New Caledonia. 

 H. RHIZOPHORARUM, Gassies. PI. Y, figs. 16, 17. 



Rather widely umbilicated, thin, regularly strongly striated, 

 light corneous ; whorls 6, constricted, regularly increasing, the 

 last not descending, rounded below. Diam. 5 mill. 



New Caledonia. 



More elevated and less strongly striate than H. vetula ; differ- 

 ing also in color and caducous epidermis. This, and other New 

 Caledonian species, would be more appropriately placed in 

 Discus. 



H. TASLEI, Crosse. .PL 7, figs. 13-15. 



Widely umbilicated, somewhat thin, subtranslucent, a little 

 shining, with light, arcuate, rather distant plications, light ful- 

 vous corneous, suture impressed ; whorls 4, rather flattened, 

 base planate; aperture similarly colored, margins joined by a 

 very thin callus. Diam. 3*5 mill. 



Near Noumea, New Caledonia. 



Unfigured Species. 



H. LANGLEYANA, H. PETTERDI, H. ARCHITECTONICA, H. ASSIMILIS, 



H. LUCKMANII, H. CURACO^), all of Brazier. Tasmania. 



H. MATHIUN^E, Petterd. Tasmania. 



H. STANLEYENSIS, Petterd. (H. Petterdiana, Taylor, not Brazier). 



Tasmania. 



H. FERNSHAWENSIS, Petterd. Tasmania. 



H. IGNAVA, Pfr. New Hebrides. 



