Dall. — Mollusca and Brachiopoda. 



PLATE 13. 



Clinura monochorda Dall; alt. 11. 5 ram. ; 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 8.3 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. 



Irenosyrinx cerebri striata 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. 



