Plate 20 



Fig. 1. Buccinulus strigosus Gould. Loo Choo [Okinawa, Ryukyu Islands] and Kago- 



s[h]ima [Japan]. Lectotype USNM 1311. Height 3.7, width 1.9 mm. (11.5 x). 

 Fig. 2. Monilea vernicosa Gould. Ousima [Amami-O-shima, Ryukyu Islands]. Holo- 



tj pe USNM 24177, original no. 1911. Height 4, width 5.5 mm. (10 x). 

 Fig. 3. Turbonilla caelata Gould. Hong Kong [China]. Holotype USNM 556. Height 



6.7, width 1.7 mm. (5.9 x). 

 Fig. 4. Mangelia semiassa Gould. Hab.? Lectotype USNM 24194, original no. 2028. 



Height 10.2, width 5.2 (5 x). 

 Fig. 5. Diloma verruca Gould. Coral Seas, China. Lectotype USNM 420. Height 3, 



width 2.5 mm. (10.6 x). 

 Fig. 6. Caecum gracile Carpenter. China Seas. Holotype Redpath Mus. 4181. Height 



2.2, width .3 mm. (approx. 55 x). 

 Fig. 7. Gibbula lepida Gould. New Ireland [Bismarck Archipelago]. Lectotype USNM 



2045. Height 4.9, width 5 mm. (5.4 x). 

 Fig. 8. Margarita lenticula Gould. Loo Choo [Okinawa, Ryukyu Islands]. Holotype 



USNM 977. Height 2.6, width 4.9 mm. (10.4 x). 

 Fig. 9. Gena dilecta Gould. Hakodadi [Hakodate] Bay [Japan]. Holotype USNM 



1695. Length 7.5, width 4, height 2.4 mm. (7.6 x). 

 Fig. 10. Limnea [Lymnaea] lanceata Gould. "Pic Lake," north shore of Lake Superior 



Lectotype MCZ 169216. Height 11, width 6 mm. (8.1 x). 



