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dice convexa, angulo dorsali valde obtuso, margine ventrali
arcuato, laminis parum numerosis (18—20) medio appressis,
utrinque liberis, tenuibus, postice angulato-recurvis; T|fv, cr. 5,
2 mm. Kullen — Finm.
289. V. ovata Penn., Mont., Lamk., = V. radiata Bbocchi, Phil., =
V. pectinula Lamk. = V. spadicea "Ren.** Nyst. Kullen — Finm.
290. V. undata Penn., Mont., Phil., (Lucina) Lamk., Tubt., Bbown,
(Cytherea) Macg., (Artemis) Recl. Bob. — Finm.
291. V. virago n., s V. virginea Angl., (non L); an = Y.
virginea var. latere antico attenuato-elongato Turt. Biv. 156?;
an = Y. florida Lamk.? — T. crassiuscula, modice convexa,
elliptica; umbones ad £ anticam siti, parvi, parum tumidi;
margo dorsalis posticus modice arcuatus, angulum obsoletum
praebens, pone’ ligamentum utrinque in carinam obtusam elevatus,
cum margine ventrali sub angulo subacuto rotundato confluens;
margo anterior subrectus; lunula cordato-lanceolata, vix
impressa; sulci concentrici lineares, regulares, passim leviter undati,
postice profundius exarati, juxta marginem ventralem crebri,
irregulares. Dentes divergentes, extimis angulum rectum L
sub-obtusum formantibus; in valva sin. medius validus, bifidas,
anticus compressus, prominulus, posticus tenuis, cultratus; in v.
dextra medius et posticus bifidi, anticus compressus, cultratus.
Sinus palliaris semiellipticus, lat. ad long. =s 1 : 1,8, medium
testae non attingens; angulus acutissimus. Colore var. a) alba
lineolis rufis fulguratis, in radios tres interruptos congestis; fi)
roseo-alba, rufo punctata, radiis quatuor angustis albis apadiceo
’maculatis. Lunula in utraque rufa,,area ad medium ligamenti
utrinque macula angulata spadicea, umbones unicolores, rosei,
apicibus flavis; cr. 28; £}, cr. 22 mm. — Forma inter V.
Deshaysii Hanl. 16,35 = Ciiemn. VII, 439 a Turt. citatam, et
Chemn. VII, 443 ( = Y. lexturata Lamk. etc.) a Mont. citatam
fere intermedia. (Sars, Koren dd.) Norv.
292. V. aurea Gm , Mont., Turt., Lamk., Phil. = V. literata L. F.
S. (non S. N.) Boh. — Norv.
293. Y. pullastra Mont., Turt., Lamk. (Yenerupis) Flmg. . ’
Boh. — Finm.
Saxicava Fu dr Brll.
294. S. rugosa (Mytilus) L., Mont., Don., Turt., Lamk. = Myt.
pholadis L., Muell, (Saxicava) Lamk., Desh., Turt. = Mya
bys-sifera 0. Fabr. = S. distorta "Sat,” Gould. — Cardo
plerumque edentulus, nymphae intus tumidae. Kullen — Finm.
295. S. arctica (Mya) L., Muell., 0. Fabr., (Cardi(a) Brug.,
(Hia-tella Daud.) Lamk., (Anatina) Turt. (d. card. v. d. fracto?) =
Chama aculeata Ström = ”Donax rhomboides Polim (Saxicava)
Desh. = S. distorta ”SAt” Gould. — a) Antice oblique trun-
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