3m CALIFOUNIA ACADKMV OF SCIENCES. 



EXPLANATION OF I'LATE 1. 



(all figures magnified.) 



Fig. I. 7'u>do>ii//a {L<i>ife(i J pcTi/a/op/ia D ALL &. Bartsch. Type specimen. Longitude 



8.5 mm.; x6. 274 



Fig. la. Same. Nuclear whorls more enlarged. 274 



Fig. 2. Tiirbonilla ( Pyrgolainpros) gibbosa CARPENTER. Longituile 5.6 mm. ; X9-3- 279 



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



F"ig. 3. Odoiiomia (Oscilla) aqitiscu/pta Carpenter. Type specimen, not fully mature. 



Longitude 2 mm.; X13. 284 



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



Fig, 4. 7'urbonil/a (Pjrgisais) auricoma Dall & Bartsch. Type specimen. Longitude 



7.2 mm.; x6.2. 274 



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



I"'g- 5- Turbonilla (Pyrgo/atnpros) h7i>ei Dall &. BxKTSCii. Type specimen. Longitude 



7.2 mm. ; x6. 2. 278 



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



Fig. 6. Odostomia ( Oscilla) graminalospira D.A.LL & Bartsch. Type specimens. Lon- 

 gitude 5.3 mm.; xio. 285 

 Fig. 6a. 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 ( Clirysallida) diegensis Dall ScBaktsch. Type specimen; the lower 



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



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



defective. Longitude 9.3 mm.; X5. 280 



Fig. 10. Turbonilla (Strioturbonilla) torquala var. stylitia Carpenter. Longitude 8 mm.; 



X7.25. 272 



Fig. loa. Same. Nuclear whorls more enlarged. 272 



Fig. It. Odostomia ( Amaura) nucifornis s/av. avellana Carpenter. Type sjiecimen. 



Longitude 9. 1 mm.; X5. 283 



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



5.2 mm.; X9.2. 282 



Fig. 13. Odoslomia ( Atnaura) pupiforniis Carpenter. Type specimen. Longitude 



6.5 mm.; x?. 283 



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



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



