Dau. — Mollusca and Brachiopoda. 
Fie. 
Fie. 
Fic. 
Fie. 
Fia. 
Fic. 
Fie. 
Fie. 
Fig. 
Fie. 10. 
Fig. 11. 
2) $93) SEN > Co 
PLATE 18. 
Clinura monochorda Dall; alt. 11.5 mm.; p. 292. 
Clinura peruviana Dall; alt. 9.0 mm.; p. 293. 
Mangilia? genilda Dall; alt. 10.5 mm.; p. 286. 
Gemmula benthina Dall; alt. 28.0 mm.; p. 267. 
Gemmula exulans Dall; alt. 17.0 mm. ; p. 265. 
Gemmula serilla Dall; alt. 8.8 mm.; p. 269. 
Borsonia (Borsonella) hooveri Arnold; alt. 14.7 mm.; p. 276. 
Mangilia sedillina Dall.; alt. 8.0 mm.; p. 287. 
Borsonia (Borsonella) dalli Arnold ; alt. 23.0 mm.; p. 275. 
Trenosyrinx cerebristriata Dall; alt. 48.0 mm.; p. 272. 
Borsonia (Borsonella) diegensis Dall; alt. 15.0 mm. ; p. 275. 
Figures 9, 10, and 11 were drawn by the late Dr. J. C. McConnell, the others by 
Miss Evelyn Mitchell. 
