THE NAUTILUS. 



Rumina decollata in Mobile and New Orleans 



Septa Perry, Note on the genus. 



Snail trap ...... 



Solenaia (Mycetopus) rugatus Soweiby 



Sonorella argus Edson, n. sp. . 



Sonorella coloradoensis Stearn . 



Spain, Notes on the Molluscan fauna of the Sierra Elvira 



Sphaeriidae old and new ..... 6, 95 



Sphaerium acuminatum Prime. 



Sphaerium occi den tale Prime . 



Sphaerium ohioense Sterki, n. sp. 



Sphyradium, American species of 



Spondvlus americanus Hermann (1781)=echinatus Mart 



(1784). . . 



Strange names for old acquaintances. 

 Strombus columba Lam. .... 

 Taylor, D.D., George W. (obituary) 

 Terebra clarkei Smith, n. sp. (PI.' IV, fig. 18) 

 Thysanophora cockerella? Pils., n. sp. (PI. I, figs. 5, 6) 

 Trapezoideus misellus Morelet . 

 Trivia eos Pvoberts, n. sp. (PI. VII, figs. 10, 11) 

 Trochetella stellata Pory ..... 

 Turbo canaliculatus Herm.=T. spenglerianus Gmel 

 Unio (Lampsilis?) purpuriatus Say (PI. Ill, figs. 4, 5) 

 Unio (Nodularia) putzeysi Preston, n. n. for N. subnigra 



Preston ........ 



Unio (Obovaria) jacksonianus Frier., n. sp. (PI. Ill, figs 



1, 2, 3 



Unio silongweensis, n. n. for N. vicinus Preston not Lea 

 Unionidae, A criticism of Dr. Haas' monograph 

 Urocoptis acicularis Torre, n. sp (PI. VI, fig. 6) 

 Urocoptis bacillaris Torre, n. sp. (PI. VI, figs. 7, 8). 

 Urocoptis bacillaris exilis Torre, n. var. (PI. VI, fig. 10) 

 Urocoptis bacillaris albicostulata Torre, n. subsp. (PI. VI 



fig. 9) 



Urocoptis bacillaris sordidula Torre, n. subsp. (PI. VI, ficr 



11) ^ 



Urocoptis boqueronis Torre, n. sp. (PI. VI, figs. 1, 2, 3) . 

 Urocoptis camagueyana Torre, n. sp. (PL VI, figs. 12, 13) 

 Urocoptis canteroiana Arango (PI. VIII, figs. 4, 5) . 

 Urocoptis cara Pils. & Hend., n. sp. (PI. VI, figs. 27- 



30) 110, 



Urocoptis cienfuegosensis Pils., n. sp. (PI. VIII, figs. 6, 



7,8) 



Urocoptis cinerea Pfr. (PI. VI, figs. 14, 15) 



Urocoptis (Cochlodinella) mediana Pils., n. sp. (PI. VIII, 



figs. 1, 2, 3) 



Urocoptis fortiuscula Torre, n. sp. (PI. VI, figs. 24, 25, 26) 

 Urocoptis hidalgoi cabrasensis Pils. & Hend., n. var. (PI. 



VIII, fig. 16) 



4 

 .58 

 60 



142 

 37 

 30 

 25 



117 



139 

 64 



139 

 60 



46 

 45 

 79 

 82 

 75 

 12 



141 

 99 



111 

 46 

 22 



70 



23 

 35 

 141 

 68 

 57 

 58 



66 



66 



67 



68 



126 



128 



127 

 55 



126 

 57 



110 



