4 6 



SUB-GENUS POMAULAX (GRAY) 



833. Astralium undosum (Wood), California. 



834. Small opercula of Turbos. 



FAMILY TROCHIDAE. 



Sub-Family Trochinae, Genus Trochus (Linn.), Sub-Genus 



Trochus. 



835. Trochus niloticus (L.), Ind. O., New Ireland, New 

 Caledonia, North Australia. 



SUB-GENUS CARDINALIA (GRAY) 



836. Trochus virgatus (Gmelin), Ind. O., Red S. 



SUB-GENUS TECTUS (MONTF.) 



837. Ttfochus obeliscus (Gmelin.), Ind. and Pac. O., 

 Samoa, Viti, Phil., New Caledonia, N. Austr. 



838. Trochus fenestratus (Gmelin.), Ind. O., Java, Soo- 

 loo Is., Phil., Viti and Navigator Is., New Caledonia. 



839. Trochus mauritianus (Gmelin.), Ind. O., Madag., 

 Seychelles, Red S., Phil. 



SUB-GENUS INFUNDIBULUM (MONTF.) 



Section Lamprostoma (Swains.) 



840. Trochus maculatus (Linn.), Phil., Viti Is., Sing., 

 Kingsmill Is., Ind. O. 



841. Trochus incrassatus (Lam.), Ceylon, New Caledonia, 

 Sandw. and Viti Is. 



842. Trochus sandwichensis (Souleyet), Sandw. Is. 



843. Trochus lineatus (Lam.), Austr. Seas. 



844. Trochus lineatus (Lam.) Var :- hanleyanus (Reeve) 

 Austr. Seas. 



SECTION INFUNDIBULUM. 



845. Trochus chloromphalus (A. Ad.), Jap. Seas, Nag- 

 asaki. 



SECTION INFUND1BULOPS (PILSBRY.) 



846. Trochus erythraens (Brocchi), Red S. 



847. Trochus cariniferus (Beck) [Reeve], Ind. O., Mad., 

 Zanzibar, Red S., Chinese Seas, Liewkiew Is. 



SUB-GENUS CLANCULUS (MONTF.) 

 Section Clanculus. 



848. Trochus pharaonius (Linn.), Red S. 



