THE NAUTILUS. 35 



Diplodonta semiaspera Phil. Syn. D. granulosa C. B. Ads., L. 

 semireticulata Orb. Cape Hatteras to Rio Janeiro, Brazil ; fossil in 

 the Pliocene of Florida. 



Diplodonta punctarella Dall, n. sp. Jamaica ; fossil in the Oli- 

 gocene, Bowden, Jamaica. 



Diplodonta platensis Dall n. sp. In 11 fathoms off Rio de la 

 Plata. 



Section Spluzrella Conrad. 



Diplodonta verrilli Dall, = D. turgida V. & S., 1881, not Conr. 

 1848. Martha's Vineyard, Mass., to N. Carolina, in 15-69 fathoms. 

 West American Species. 



Diplodonta orbella Gould. {Sphaerella tumida Conr. Ms.) Brit- 

 ish Columbia to Lower California. 



Diplodonta tellinoides Reeve. Panama to Guayaquil. 



Diplodonta discrepans Cpr. Mazatlan. 



Diplodonta subquadrata Cpr. Not D. subquadrata Gabb, but 

 perhaps D. undata Cpr. Cape St. Lucas to Acapulco and Maz- 

 atlan. 



Section Felantella Dall. 



Diplodonta obliqua Phil. (Lucina calculus Reeve). Cape St. 

 Lucas, Mazatlan. 



Diplodonta cornea Reeve. Gulf of Nicoya. 



Diplodonta sericata Reeve. Felauia sericata Cpr. Gulf of Cal- 

 ifornia. 



Diplodonta nitens Reeve. Gulf of Guayaquil. 

 Section Phlyctiderma Dall. 



Diplodonta ccelata Reeve. Bay of Guayaquil. 



Diplodonta semirugosa Dall, n. n. = D. setniaspera Cpr. not 

 Philippi. Gulf of California. 



Die Conchylien der patagonischen Formation. By H. 

 von Ihering. (Neues Jahrbuch fur Mineralogie, Geol. und Pala;on. 

 Bd. II, pp. 1-46, taf. I, II, 1899.) There are recorded from this for- 

 mation 69 species. 9 new species are described, followed by general 

 observations on the formation and fauna. 



Land and Freshwater Moi.lusca oe India, Vol. II., pt. 9. 

 By Lieut. -Col. H. H. Godwin-Austen. The part now before us 

 continues the account of the Zonitidce, a large part of both text and 

 plates relating to the soft anatomy of the various forms. The groups 

 Macrochlamys, Eurychlamys (n. s.-g.), Ratnadripia (n. s.-g), Eu- 

 plecta, Girasia, Austenia, Microcystina, Microcystis. Mariatlla, Ben- 

 sonia, Haughtonia (n. s.-jr.), Nilgira, Ariopliunta, Khasiella (n. s.-g) 

 are treated in more or less detail. 



In so large an amount of new and interesting information, only a 

 few points can be specially mentioned. 



In Macrochlamys pedina the spermatheca was found to contain 

 not less than seven spermatophores ; and the morphology of the 



