366 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE IL 



(all figures MAGNIFIED.) • 



Fig. I. Turbotiilla (Lancea) tridentata Carpenter. Longitude 12.8 mm.; XS- 273 



Fig. \a. Same Nuclear whorls more enlarged. 273 

 Fig- 2. Turbonilla ( Pyrgiscus) subcuspidata Carpenter. Type specimen. Longitude 



6 mm.; xg. 277 

 Fig. 2a. Same. Nuclear whorls more enlarged. 277 

 Fig. 3. Turbonilla ( Pyrgolanipros) lowei var. pedroana Dall & Bartsch. Type speci- 

 men. Longitude 5.5 mm. ; xio. 279 

 Same. Nuclear whorls more enlarged. 279 

 Turbonilla torqiiata Gould. Longitude 10.6 mm.; x6. 271 

 Same. Nuclear whorls more enlarged. 271 

 Turbonilla sleanisii D.\LL & Bartsch. Type specimen. Longitude 9.2 mm.; 



X6.7. 271 



Same. Nuclear whorls more enlarged. 271 



Turbonilla ( Pyrgiscus) crebrifilata Carpenter. Longitude 5.4 mm.; X10.7. 276 



Same. Nuclear whorls more enlarged. 276 



Turbonilla (Pyrgiscus) lenuicula Gould. Longitude 6.1 mm.; X9. 275 



.Same. Nuclear whorls more enlarged. 275 



Turbonilla ( Pyrgisculus) laminata Carpenter. Longitude 6.8 mm.; xg. 277 



Same. Nuclear whorls more enlarged. 277 



