364 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE L 



(all figures magnified.) 



Fig. I. Turbonilla ( Lancca) pentalopha Dall & Bartsch. Type specimen. Longitude 



8.5 mm.; x6. . 274 



Fig. \a. Same. Nuclear whorls more enlarged. 274 



Fig. 2. Turbonilla (Pyrgolampros) gibbosa Carpenter. Longitude 5.6 mm. ; X9.3- 279 



Fig. 2a. Same. Nuclear whorls more enlarged. 279 



Fig. 3. Odosto7nia ( Oscilla) esquisculpta Carpenter. Type specimen, not fully mature. 



Longitude 2 mm. ; xi3. 284 



Fig. 3a. Same. Nuclear whorls more enlarged. 284 



Fig. 4. lurbonilla ( Pyrgisais) auricoma Dall & Bartsch. Type specimen. Longitude 



7.2 mm.; x6.2. 274 



Fig. 4a. Same. Nuclear whorls more enlarged. 274 



Fig. 5. Tit? bonilla (Pyrgolampros) lozvei Da'L'L & ^ARTSCU. Type specimen. Longitude 



7.2 mm.; x6.2. 278 



Fig. 5a. Same. Nuclear whorls more enlarged. 278 



Fig. 6. Odostomia ( Oscilla) grammatospira Dall & Bartsch. Tj'pe specimens. Lon- 

 gitude 5.3 mm.; xio. 285 

 Fig. ba. Same. Nuclear whorls more enlarged. 285 

 Fig. 7. Turbonilla (Pyrgolampros) arnoldi Dall & Bartsch. Type specimen. Lon- 

 gitude 7.6 mm. ; x6.2. 279 

 Fig. 8. Odostomia ( Chrysallida) diegensis Dav.\^ & 'RA.v.TScn. Type specimen; the lower 



right-liand portion of the aperture defective. Longitude 4 mm.; xu- 284 



Fig. 9. Turbonilla (Pyrgolampros ) adleri Dall & Bartsch. Type specimen; the apex 



defective. Longitude 9.3 mm.; X5- 280 



Fig. 10. Turbonilla (Strioturbonilla) iorquala var. stylina Carpenter. Longitude 8 mm.; 



X7-25. 272 



Fig. \oa. Same. Nuclear whorls more enlarged. 272 



Fig. II. Odostomia (Amaura) tiuciformis vat. avellana Carpenter. Type specimen. 



Longitude 9. 1 mm.; X5. 283 



Fig. 12. Odostomia ( Evalea) stearnsii Dall & Bartsch. Type specimen. Longitude 



5.2 mm.; X9. 2. 282 



Fig. 13. Odostomia (Amaura) pupi/ormis Carpenter. Type specimen. Longitude 



6.5 mm.; X7. 283 



Fig. 14. Odostomia tenuis Carpenter. Longitude 5.7 mm.; x8. 281 



Fig. 15. Odostomia (Evalea) gouldii Carpenter. Longitude 5 mm.; X9. 282 



