THE NAUTILUS. 



Nevvcomb, Dr. Wesley, (In Memoriam.) 



Note on Mr. Pilsbry's " Article IV " . 



Orizosoraa, new subgenus of Streptostyla. 



Paludina japonica, for sale in the San Francisco Chinese 



Markets 



Pahidomus Palawanicus, n. sp. 

 Patella Boninensis, n. sp. . . . 



Patula Cooperi, sinistral. . 

 Philomycus. ..... 



Physa osculans, var. Patzcuarensis, n. var. 



Planorbis trivolvis, etc. 



Polygyra (Triodopsis) Mullani, var. Olneyse, n. var. 



Potaniopyrgus? Bakeri, n. sp. 



Preliminary notices of new Mexican shells. 



Prophysaon pacificum. .... 



Proi)hysaon andersonii, var pallidum, n. var 

 Publications Received. ..... 24, 72, 



Pupa syngenes. (PI. II, figs. 1,2) 



Pupa muscorum. Notes on. 



Pupa Holzingeri Sterki, in Ohio. 



Pyrgulopsis? Patzcuarensis, n. sp. 



Scutellina, use of the generic name. 



Shells of the Erie Canal, 



Slugs from British Columbia. 



Streptostyla (Orizosoma) tabiensis, n. sp. 



Tebennophorus, on the genus. 



Terehratulina (unguicula Cpr. var?) Kiiensis. (PI. I 



figs. 4, 5) . 

 Terehratulina unguicula, Cpr. typical. (PI, I. figs. 6, 7) 

 Terebratula Stearnsii. (PI. I, figs. 1, 2, 3) 

 Terebra Stearnsii, n. sp. Japan. 

 Testacella Maugei in Philadelphia. 

 Thylacodes medusae, n. sp. Japan. 

 Unio Pilsbryi, n. sp. Arkansas. 

 Unio Pleasii. n. sp. Arkansas. 

 Unionidse in the Southeastern U. S 



tion of .... 



Unio Singleyanus, n. sp. Florida. 

 Unio Ferrissii, n. sp. Florida. 

 Uuionidse, On the Byssus of 



Means of distribu 



121 



53 

 9 



114 



17 



79 



83 



4, 21, 53 



9 



94, 95 



47 



9 



8 



31 



31 



120, 128 



39 



45 



93 



9 



88 



23 



30 



9 



4,21 



18 

 18 

 19 

 93 

 83 

 93 

 1 

 2 



15 



29 



30 



73,90 



