-^ 400 — 



Arca nuolens Linue ed. 12 p. 1143. — Chemnitz Conch. Cab. VII 

 p. 241 T. 58, F. 547. — Poli Test. Sicil. T. 25, F. 8. 9. - Forbes 

 et Hanley II p. 215 T. 47, F. 7. 8. — Sow. III. Ind. T. 8, F. 1. — 

 Sovv. Thes. T. 220, F. 120-122. - Weinkauff Mittelm. p. 204. - 

 Jeffreys Br. Conch. II p. 143 T. 29, F. 2. — Sars Norv. p. 32. — 

 Hiaalgo Esp. T. 72, F. 5. — Locard Cat. p. 483. — Monterosato 

 Enum. e Sin. p. 6. 



Arca margaritacea Brug. Eucycl. T. 311, F. 5. — (N.) Lam. VI 

 p. 106. — Philippi Euum. I p. 64. 



Glycimeris argentea da Costa Br. Conch. p. 170 T. 15, F. G. 



Tellina adriatica Gmelin ed. 13 p. 3243. 



Juv. = Xucula perminima Monterosato. 

 Hab. e mediterraneo usqiie ad Norvegiam borealem. 



3. Nucula radiata Forbes etHanley. T. N. nucleo 

 simillima, sed major, longior, magis obliqua magisque inaequi- 

 laterab's, radiis aliquanto rubro-aurantiis nonnunquam fumosis 

 picta, magis minusve compressa; epidermis nitidiuscula, olivacea, 

 in junioribus olivaceo-lutea. — Diani. 13 Mm. Hanley. 



Nucuha radiata Forbes et Hanley II p. 220 T. 47, F. 4. 5. — Hau- 

 ley in Sow. Tlies. IIF T. 229 F. 123. 124. - Sow. III. Ind. T. 8, 

 F. 3. — Hidalgo Esp. T. 72, F. 6. — Locard Cat. p. 484. 



Nucula nucleus var, Jeffrej^s Br. Conch. II p. 144 T. 24, F. 2a. 

 Hab. e mediterraneo usque ad Norvegiam meridionalem. 



4. Nucula tumidula Malm. T. sat tumida, breviter 

 triangularis, parum longior quam altior, margine antico oblique 

 truncato et cum ventrali sat arcuato angulum fere formante, 

 dorsali ])ostice leviter arcuato, non vero expanso, umbonibus 

 prominulis, hnmla distincta, cordata; valvulae solidulae, lineis 

 conccntricis crebris distinctissimis et radiantibus minus con- 

 spicuis sculptae, e])idermide pallide virescente vi.x; nitida , intus 

 margaritaceae radiatim striatae, margine distincte crenulato; 

 linea cardinali sat arcuata, denticulis anticis circiter 8, posticis 

 circiter 16. — Long. 6 Mm. Sars. 



Nucula tumidula Malm Scand. Naturf. Fcirh. VIII 1860 p. 621. — 

 Sars Norveg. p. 33 T. 4, F. 5. — Locard Cat. p. 483. ~ Jeffreys 

 Pr. Z. S. 1879 p. 582. — Monterosato Enum. e Siuon p. 6. 



Nucula pumila Loveu mss. 

 Hab. oceanum atlanticum borealem. 



5. Nucula nitida Sowerby. T. acute triangularis, ad 

 unibones convexa, marginem versus compressa, solidula, nitens, 

 sculptura praecedenti similis, sed striis concentricis distinctiori- 

 bus, praesertim ad latera, ibique ad intersectionem striarum 

 longit. subnodulosis, sub epidermide laevissima nitente kites- 

 centi-fusca lactea ; umbones prominuli ; lunula sulco cincta, medio 

 minus elevata; cardo dentibus circal2 anticis, 20i)osticis; latus 

 internum margaritaceum, marginibus antico et ventrali distincte 

 crenatis. — Diam. 9 Mm. 



Nucula uitida Sowerby III. Concli. F. 31. — F. 31. — Hauley Rec. 

 Sh. I p. 171 T. 19. F. 44 - Loven Ind. p. 34. — Forbes et 

 Hauley II p. 218 T. 47, F. 8. - Sow. III. lud. T. 8, F. 4. — 



