142 K. J. Bash— Marine Gastropods referred to 



EXPLANATIOX OF PLATES. 

 Plate XXII. 



Figure 1. — Delphinoidea serjmlotdes (Montagu) Brown, p. 100. Front view of a speci- 

 men (No. 9450) from Guernsey, England, in the Yale University Museum; 

 X about 22. 



Figure la. — The same. Basal view of another specimen from the same locality ; 

 X about 22. 



Figure lb. — The same. Top view of another specimen from the same locality ; 

 X about 22. 



Figure 2. — Lissospira diaphana (Verrill) Bush, p. 131. Basal view of the type speci- 

 men (No. 38409) from station 2084; x 12. 



Figure 3. — Lissospira p>roxima (Tryon) Bush, p. 130. Front view of the type specimen 

 (No. 38443) from station 2115; x 12. 



Figure 4. — Cyclostrema cancellata Marryatt, p. 97. Top view of the type specimen. 



Figure 4a. —The same. Basal view. Both are enlarged copies of tlie original figures. 



Figure 5. — Adeorhis suhcarinatus (Montagu) "Wood, p. 102. Top view of the nuclear 

 whorl of the same specimen as figure 9 ; x about 35. 



Figures. — Circulus trilix Bush, p. 127. View of an animal with operculum, from 

 station 2280 ; the shell having been removed with nitric acid; much enlarged. 



Figure 7. — Vitrinella multistriaia (Verrill) Bush, p. 124. Top view of a young speci- 

 men (No. 35733) from station 2109; x about 16. 



Figure 8. — Cyclostremella humilis Bush, p. 141. Basal view of one of the type speci- 

 mens: X about 22. 



Figure 8a. — Tlie same. Front view of another specimen ; x about 22. 



Figure 8b. — Top view of another specimen; x about 22. All are from station 2278. 



Figure 9. — Adeorhis suhcarinatus (Montagu) "Wood, p. 102. Basal view of a specimen 

 (No. 9428) from Guernsey, England, in the Yale University Museum; x about 

 14. 



Figure 10. — Circulus trilix Bush. . Basal view of an adult (type) specimen (No. 

 35365) from station 2113; x 12. 



Figure 10a. — The same. Front view of the same specimen ; x 12. 



Figure 11. — Vitrinella Try oni^n&'h., p. 123. Front view of the type specimen from 

 station 2278; x about 16. 



Figure 11a. — The same. Top view of the same specimen; x about 16. 



Figure 12. — Circulus trilix Bush, a, b, c, Camera-lucida drawings, a, Portion of the 

 radula; greatly enlarged. &, A series of marginal teeth which turned outward in 

 mounting; much enlarged, c, A single marginal hook; more enlarged. d,e,f, 

 g, Free hand drawings, d, Broad median tooth; e, slender lateral tooth; /, 

 series of twenty or more sickle-shaped, marginal teeth as seen when magnified 

 about 1,000 diameters, g, Series of marginal teech with the invisible lower lines 

 introduced. 



Figures 2, 3, 10, and 10a, drawn by J. H. Emerton; figures 6 and 12, by the author . 

 the others, by A. Hyatt Verrill, are camera-lucida drawings (except figures 4, 

 4a). 



