Plate 13 



Fig. 1. Triforis clathratus Gould. China Seas. Holotype Redpath Mus. 5240. Height 



5, width 2 mm. (16 x). 



Fig. 2. Triforis calculiferus Gould. Loo Choo [Okinawa, Ryukyu Islands]. Lectotype 



Redpath Mus. 5203. Height S, width 2.5 mm. (12.5 x). 

 Fig. 3. Triforis interfilatus Gould. Hong Kong Harbor [China]. Lectotype Redpath 



Mus. 5221. Height 12, width 2.5 mm. (9.8 x). 

 Fig. 4. Triforis intercalaris Gould. China Seas. Holotype Redpath Mus. 5222. Height 



6, width 1.5 mm. (15 x). 



Fig. 5. Mangelia pura Gould. Hong Konw Harbor [China]. Lectotype USNM 24246, 



original no. 436. Heieht 7, width 2.2 mm. (7.3 x). 

 Fig. 6. Cerithium placidum Gould. China Seas. Lectotype USNM 24137, original no. 



443. Height 6.2, width 2 mm. (12.8 x). 

 Fig. 7. Rissoina modesta Gould. Loo Choo [Okinawa, Ryukyu Islands]. Holotype 



USNM 1040. Height 4.8, width 2 mm. (7.5 x). 



