Plate 36 



Fig. 1. Pedicularia decussata Gould. Off Georgia, 400 fathoms. Holotype MCZ 169118. 



Length 5.5, height 4 mm. (9.8 x). 

 Fig. 2. Helix darnascenus Gould. Desert region east of California. Lectotype Cornell 



Univ. Paleo. Dept. 27244. Height 16, width 19 mm. (2 x). 

 Fig. 3. Saxicava flaccida Gould. Cape of Good Hope. Lectotype Redpath Mus. 15679. 



Length 10, height 7, width 6 mm. (5.3 x). 

 Fig. 4. Helix bucculenta Gould. Georgia to Texas. Presumed Holotype MCZ 169059. 



Height 15, width 22 mm. (2.1 x). 

 Fig. 5. Segmentina lucida Gould. Loo Choo [Okinawa, Ryukyu Islands]. Lectotype 



USNM 24243, original no. 834. Height 1.5, width 3.3 mm. (6 x). 

 Fig. 6. Segmentina lucida Gould. Another view (10 x). 

 Fig. 7. Helix aeruginosa Gould. San Francisco, California. Lectotype MCZ 169046. 



Height 23, width 33 mm. (1.6 x). 

 Fig. 8. Corilla pulvinaris Gould. Hong Kong, China. Lectotype MCZ 169316. Height 



7, width 19 mm. (2 x). 

 Fig. 9. Clausilia insignis Gould. [Tavoy, Burma.] Lectotype USNM 117120. Length 



IX. 4, width 7.2 mm. (7.7 x). [Prepared with ammonium chloride.] 



