— 394 — 



Trachyuermo.n ruber L. . . . 

 TnACIIYORTIt ALIQVS (nov. 

 Subg.) 

 TnicHOTROPis acuminata 



Jeffr. 



— atlantica Beck. 



— borealisBr. et S. 



— canaliculata 



Leach. . . . 



— cancellata 



Hinds 



— rostellata 



Goulh. 



— inermis Hinds. 



— umbilicata Mac- 



gill 



Trido^t.v semisulcata Leach. 



Tritomum pyramidale Str. . 



— turricula Lov. . . 



— viridulum Fabr. 

 Trochcs corneus Knr 



— groenlandicus Gh. 28 



— — var. Ispvior MôlI. 



32 



70 



17 

 17 



17 



19 

 17 



17 



18 



17 



39, 



309 



6 



9 

 29 

 ,303 

 28, 

 303 

 Trophox clathratus L. . . . 17 



— var. Gunneri Sais. 17 



— var. scalariforniis 



Gld 300 



Trïoma (G.) 197 



— clathrata Stimps. . 197 

 TcRBO antiquus L 237 



— cinereus Couth. . . 302 



— fabalis Turt 21 



— helicinusPh. 2,27,297,302 



— labiosus Mtg 22 



— littoreus L 20 



— membranaceu?; Ad. . 22 



— rainutus Tôt 198 



— muriaticusBeud. . . . 239 



— obtusatus L 21 



— olivaceus Br 29 



— ruber kà 193 



— saxatilis 01 21 



Turbo stagnalis Bast. . . 234,236 



— subumbilicatus Mtg. . 239 



— thermalis L. 232, 233, 232 



— nlvae Penn. 184, 185, 186' 



189, :^08, 232, 239, 242, 243 



— unifasciatus Mtg. . . 193 



— ventrosus Mtg. . 234, 236, 



238, 2'.o, 250, 232 



— vinctus Mtg 21 



TuRRisiPHO tortuosus Rvc. . . 14 



Tympanotomus (G.) 225 



Unio consentaneus Zgl. . . . 314 



VALV.VTA (G.) 183, 226 



Valvatella groenlandica Ch. 28, 



302 

 Velutina velutina Mûll. . . 23 

 Venus fluctuosa Gld 42 



— incrassata Sow. . . . 239 



— railiaris Phil 40 



— stellata Gni 144 



VlTRELLA (G.) 212, 219 



— pellucida Cl . . . . 212 



Vnip.vnA (G ) 181, 223 



VoLSELLA modiolus L. ... 36 

 VraziaIG.) 226 



— acme Brus 220 



Vi LGOCERiTHiuM p r o V iiiciale 



Loc. . . . 286 



— triviale 

 Monts. . . 286 



— vulgatuni 

 Brug. ... 286 



— — var. nodu- 



losa Phil. . 286 

 YoLDiA glacialis Gr 307 



— hyperborea Lov. . . . 307 



— intermedia Sars. 38, 308 



— — var. major Lèche 38 



— lucida Lov 38 



YoLDiELLA intermedia Sars. . 38, 



308 



— lucida Lov. ... 38 



ZOPHOS (no\. Gen.). ... 74 



