THE NAUTILUS. II 



Planorhis anitensis n. sp. 



Planorhis peninsularis n. sp. 



Helicodiscus Uneatus Say, sonorensis n. subsp. 



45. The same, No. 4. Pr. C. A. S. (2), lY, 130-143, PI. V, VI. 

 1894. 



Buh'?72uh(s { pallidior ?) vegetns Gld., var. vegerspiza n. var. 

 Melaidella tastensis n. sp. 



46. The same, No. 5. Pr. C. A. S. (2), V, 163-0. 1895. 

 Bulimiihis decipiens n. sp. 



fUocolumna n. gen. 



47. Catalogue of the Land and Fresh-Water Mollusca of Lower 

 California. Zoe, III, 12-25. 1892. 



48. Catalogue of Calilornian Fossils. Bull. No. 4, Cal. Stale 

 Mining Bureau, 65 pages and PI. I-VL 1894. See No. 38. 



Part 11. Bibliography and References. Includes many titles of 

 papers on Recent Shells. Part III. Additions to the Catalogue of 

 Californian Fossils Obtained since 1888. Part IV. Remarks on 

 Fossils Collected by Dr. S. Bowers. Part V. Descriptions and 

 Figures of New Species. Tiiirty-seven new species Cretaceous and 

 Cretaceous B (or Eocene). See p. 7. 



49. Catalogue of West North American and Many Foreign Shells. 

 Printed for the State Mining Bureau. Also a complete list of Mol- 

 lusca known to inhabit the AVest Coast of North America, from Sitka, 

 Alaska, to Cape St. Lucas, and inland to the Rocky Mountains, north 

 of Mexico. 1894. 



50. On Some Pliocene Fresh-Water Fossils of California. Pr. C. 

 A. S. (2), IV, 166-172, PI. XIV. 1894. 



Margaritana siibangulata n. sp. 



51. Catalogue of Marine Shells, collected chiefly on the eastern 

 shore of Lower California. Pr. C. A. S. (2), V, 34-48. 1895. List 

 of 191 species. 



52. On West Mexican Land and Fresh-Water Mollusca. Pr. C. 

 A. S. (2), V, 166-9. 1895. Seventeen species and varieties. 



53. On Some New Cretaceous (and Eocene ?) Mollusca of Cali- 

 fornia. Pr. C. A. S. (2), VI, 330-337, PI. XLVII, XLVIII. 1896. 



Sistrum cretaceum n. sp. Triplicostn n. subgen. 



Littorina subobesa n. sp. Pholudomya ( TripHcostd) pro- 

 Calliostoma lignitica n. sp. gressiva v. sp. 



Sigaretus costotus n. sp. 



