90 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Seb. 



EXPLANATION OF PLATE 7 



Fig. la. Pseudoliva inornata, new species, XL Type from Univ. of Cal. 

 Locality 458. 



Fig. lb. Pseudoliva inornata, new species, X2. Cal. Acad. Sci. Locality 

 183. 



Fig. Ic. Pseudoliva inornata, new species, X2. Mouth view of specimen 

 figured as Fig. la. 



Fig. 2. Pseudoliva tejonensis, new species, XL Type from Cal. Acad. 

 Sci. Locality 245. 



Fig. 3a. Pseudoliva volutaeformis Gabb, XI. This is a mature speci- 

 men from Cal. Acad. Sci. Locality 244. 



Fig. 3b. Pseudoliva volutseformis Gabb, X2. This specimen is a young 

 individual from Cal. Acad. Sci. Locality 244. 



Fig. 4. Bursa washingtoniana (Weaver), XL 



Fig. 5a. Nyctilochus kewi, new species, XI. Mouth view of type. 



Fig. 5b. Nyctilochus kewi. new species. XI. Back view of type. 



Fig 6. Bursa washingtoniana (Weaver), XL Cot3T)e from Cal. Acad. 

 Sci. Locality 182. 



Fig. 7. Nyctilochus californicus Gabb. XI. The specimen figured is far 

 larger than Gabb's type. Univ. of Cal. Locality 458. 



Fig. 8. Nyctilochus hornii (Gabb), X2. Cal. Acad. Sci. Locality 244. 



Fig. 9. Nyctilochus washingtoniana (Weaver), XL This specimen was 

 described as Cassidaria washiiisitoniana. the canal being absent from the 

 type specimen. Cotype from Cal. Acad. Sci. Locality 182. 



Fig. 10a. Cantharus perrini, new species, X2. Mouth view of type. 



Fig. 10b. Cantharus perrini, new species, X2. Back view of type. 



Fig. 11. Chrysodomus ruckmani, new species, XI. Aperture view of 

 type. Univ. of Cal. Locality 452. 



