Plate 15 



Fig. 1. Rissoina trochlearis Gould. China Seas. Lectotype USNM 661. Height 3.8, 



width 1.9 mm. (10 x). 

 Fig. 2. Rissoina nitidula Gould. China Seas. Holotype USNM 24071, original no. 568. 



Height 5, width 2 mm. (10 x). 

 Fig. 3. Rissoina flexuosa Gould. Sydney Harbor [New South Wales, Australia]. Lectotype 



USNM 24076, original no. 286. Height 5, width 2 mm. (11.6 x). 

 Fig. 4. Rissoina imbricata Gould. China Seas. Holotype USNM 37350. Height 7, width 



3 mm. (8.7 x). 

 Fig. 5. Rissoina plicatula Gould. Port Lloyd, Bonin Islands; Loo Choo [Okinawa, Ryukyu 



Islands]; Kikaia [Kikaigashima, Ryukyu Islands]. Holotype USNM 947. Height 6, 



width 3 mm. (6.3 x). 

 Fig. 6. Syronola subula Gould. China Seas. Lectotype USNM 563. Height 1.5, width 1 



mm. (12.8 x). 

 Fig. 7. Ringicula doliaris Gould. Hakodadi [Hakodate] Bay [Japan], 6 fathoms. Holotype 



USNM 1692. Height 5, width 3 mm. (6.4 x). 

 Fig. 8. Ringicula denticulata Gould. Port Jackson, New South Wales [Australia]. Holotype 



USNM 471. Height 5, width 3.5 mm. (6 x) 

 Fig. 9. Ringicula arctata Gould. Hong Kong Harbor [China]. Holotype USNM 567. 



Height 4, width 3 mm. (7 x). 

 Fig. 10. Trochus [Euchelus] gemmatus Gould. Sandwich [Hawaiian] Islands. Lectotype 



MCZ 169167. Height 17, width 20 mm. (2 x). 

 Fig. 11. Trochus [Collonia] verruca Gould. Sandwich [Hawaiian] Islands. Lectotype MCZ 



169421. Height 4, width 3.5 mm. (10 x). 

 Fig. 12. Turbonilla ornata Gould. Hong Kong Harbor [China]. Holotype USNM 556. 



Height 6.7, width 1.5 mm. (5.8 x). 

 Fig. 13. Trochus [Osilinus] pyriformis Gould. San Diego [California]. Holotype MCZ 



169435. Height 36, width 30 mm. (1.5 x). 

 Fig. 14. Ziziphinus actutus Gould. Eastern Coral Seas. Lectotype USNM 24157, original 



no. 414. Height 5, width 4 mm. (6.4 x). 

 Fig 15. Turitella gracillima Gould. Kagos[h]ima Bay [Japan]. Holotype USNM 2027. 



Height 20, width 4 mm. (4.1 x). 

 Fig. 16. Tornatina apicina Gould. Sydney Harbor [New South Wales, Australia]. Holotype 



USNM 284. Height 5, width 2 mm. (4.6 x). 



