Plate 18 



Fig. 1. Ziziphinus infuscatus Gould. Kagos[hJima Bay [Japan]. Holo type USNM 1348. 



Height 18, width 9 mm. (2.1 x). 

 Fig. 2. Turbo nocturnm Gould. S[h]imoda [Japan]. Holotype USNM 2408. Height 7, 



width 7 mm. (10 x). 

 Fig. 3. Ziziphinus urbanus Gould. Kagos[h]ima Bay [Japan]. Holotype USNM 24248. 



Height 6, width 5mm. (5.5 x). 

 Fig. 4. Nematura puncticulata Gould. Tavoy [Burma]. Holotype MCZ 169321. Height 



4.5, width 2.2 mm. (13.8 x). 

 Fig. 5. Neritina porcata Gould. [Fiji Islands.] Lectotype MCZ 169307. Height 19, 



width 14 mm. (4 x). 

 Fig. 6. Emarginula [Clypodina] textilis Gould. Ousima [Amami-O-shima, Ryukyu Islands]. 



I tolotype USNM 24112. Length 9, height 4, width 7 mm (5.5 x). 

 Fig. 7. Emarginula [Clypidina] radiata Gould. Sydney Harbor [New South Wales, 



Australia]. Holotype USNM 266. Length 12, height 7, width 8 mm. (5.5 x) 



