— 39 — 



Artcmis Poli. 



283. A. exolela (Venus) L., Mont., (Cytherea) Lamk., Macg., (Art.) 

 Agass. — Lunula ad Jong. t. ut 1 : 7,2. Boh. — Bergen. 



284. A. lincta (Venus) Pult., (Cytherea) Lamk., (Artemis) Agass. , 

 Brown = V. exoleta @ Mat. et Rack. = List. t. 290 f. 126. Boh. 



285. A. comta n., an = A. lincta Macg.? — T. sublentiformis, non- 

 nihil Jongior quam alta, tenuis, convexa; margo Jigamentalis 

 subrectus, productus, cum postico subanguJatus; Junula impres- 

 sa, cordata, convexa, ad Jong. t. ut 1:6,7; striae tenues, pa- 

 rum regulares, medio appressae, utrinque erectae, sublamellaceae; 

 lamina cardinalis angusta, postice attenuata, apicem impressionis 

 muscularis vix attingens; dens lunularis v. sin. cum cardinali 

 angulum fere rectum formans, d. cardin. et ligamentalis ap- 

 proximati, hic subrectus, fossa ligamentalis angusta, linearis; 

 d. accessorius validus; in v. d. fossa cardin. magna; §§* cr. 16; 

 2 |^ 5 cr. 13; Yu.°7r> cr * *^?5 mm - — Differt ab A. exoleta testa ma- 

 gis convexa, striis tenuioribus, lunula nonnihil Jongiore, ab A. 

 lincta, striis paullum fortioribus, ab utraque forma magis elon- 

 gata, lamina cardinali angustiore, dente accessorio valido, testa 

 tenuiore. Boh. 



Venus L. 



286. V. casina L., Gm., (excl. syn. List.) Chemn., Schroter, Turt. , 

 Brown. — T. ovato-cordata; lunula depressa, convexa, cordata; 

 margo anticus sub Junula subito productus, dein arcuatus; la- 

 mellae circ. 40 antice confertae, revolutae, postice discedentes, 

 patentes; f£, crass. 24 mm. Bergen — Vardoe. 



287. V. fasciata (Pectunculus) DaC. , Don., Desh. , Phil. (non Gm.), 

 = V. paphia Mont. [rwn L.), = V. dysera "L." Brocchi (non 

 L.) = V. Brogniarti Payr. Boh. — Bergen. 



288. V. striatula (Pectunculus) DaC. , Don., Mont., Hanl. = V. 

 rugosa var. A Penn. = V. gaJJina L. F. S. , Dillw. , Turt. (non 

 L. S. N., Chemn., = Hanl., 16, 42; an = List. Con. 281, 119?); 

 annon = V. senilis Brocciii, Phil.? — «) = List. Con. t. 282 f. 

 120. — T. cordato-trigona, tumida, solida, nitidula; laminae nu- 

 merosae, confertae, antice et postice tenues, hic arcuataj, illic si- 

 nuatae, medio reclinatae, deplanatae, imbricatae, rugas saepius 

 formantes, binis J. ternis scil. confluentibus; alba, radiata, li- 

 neolis fulminatis rufis; ff cr. 15,5. — fi) = V. iaminosa Turt. 

 (vix Mont. , Lask.) = V. sulcata Brown = V. prideauxiana "Leach", 

 Macg. — T. cordato-trigona, elongata, modice convexa, tenuis, 

 subrudis; laminae pauciores, distantes, undique tenues, foliaceae, 

 simplices; sordide albida, pictura obsoleta; f^, cr. 12,5 mm. 

 Speciem crederes propriam, sed formae connectentes non rarae, 

 laminis tenuibus, simplicibus crebris, 1. crassiusculis distantibus; 

 utraque, dum junior, laminis simplicibus praedita = V. costata 

 Brown. Adulta vero est y) arctica, pumiia, postice obtusa, mo- 



