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326. N. obesa n. — T. tenuis, rotundato-ovata, postice in rostrum
breve sensim contracta, concentrice tenue striata, processa
cardinali angusto, demisso, dente remoto, humili, costa
subobsole-ta; ait. 12, long. pr. r. 13,5, c. r. 18,5, crass. 9, 4,—T.
inflata, margo ligamentalis vix concavus, sub angulo obtusissimo in
lunularem abiens, primo breviter subrectum, deinde sensim
arcuatum; sinus ventralis posticus parum profundus; ossiculum
minutum, cartilaginis vix J occupans, subcretaceum. Bob.
•
327. N. brevi rostris (Thracia) Brown, annon = Erycina cuspidata
Risso? (non == ”T. cuspidata Olivi” (Corbula) Phil., sed opus
Olivh comparare non licuit; Brocchi dentes duos laterales
describit.) — T. 8olidula, subtrigona, exaltata, postice sensim
contracta, modice rostrata, concentrice rugosa, processu cardinali
prominulo, dente laterali robusto, triangulari, recurvo, costa
valida; ait. 12,2, long. pr. r. 12, c. r. 16,4, crass. 9,3 mm. —
T. inflata, antice planulata; margo ligamentalis leviter concavus
angulum fere rectura format cum lunulari, primum breviter
arcuato, deindo ad medium fere latus anticum subrecto; sinus
ventralis posticus distinctus; ossiculum longum, subcretaceum;
lunula distinguenda, area lanceolata. Boh.
328. N. sulcata n., ait == N. costellata (Corbula) Desh., Hinds.?
(Specimina nostra in coli. Cummingiana huic specici adnumerat
Hinds A. N. H. XIII, 307, tabulam citans Dssn. Mor. 7, f. 1,2,
3, sed longe diversam sub eodem nomine describit Phil. ad t.
ejusd. op. 24 f. 2 relegans; neutram comparare licuit); C.
Wae-1 i i Nyst affinis. — T. subtenuis, rotundato-ovata, postice in
rostrum gracile tubulare contracta, costis radiata 15—20,
postice remotis, processu cardinali parvo, depresso, dente contiguo
brevi, robusto, costa valida; ait. 6, long. pr. r. 7, c. r. 10,5,
cr. 4,5 mm. — T. tumida, antice ct postice laevigata, costula
rostri diagonali; margo ligamentalis satis concavus, absque
angulo in lunularem continuatus, primo elatum, deinde ad medium
latus subrectum; sinus ventralis profundus; rostrum fere
assurgens; ossiculum cardinale validum, solidum, longum, nitidum;
lunula distinguenda, area in v. d. angustissima. Bob. — Bergen.
329. N. vitrea n. — T. fragilissima, laevis, ovata, in rostrum breve
sensim producta, plica profunda, processu cardinali angusto,
lon-giludinali, antico dente munito, ossiculo magno, lato, laminaceo,
dente laterali obsoleto, costa gracili elevata; ait. 5,5, long. pr.
r. 5,6, c. r. 7,6 mm. — T. inflata, pellucida; margines
dorsa-les subrecti angulum formant obtusum; sinus ventralis parum
profundus; rostrum rotundatum; costa ab umbone fere abiens,
in plicam producta usque ad marginem ventralem. — Ad A
nati oellam accedere videtur. Cave ne in hac et afTinibiis
ossiculum fractum pro dente habeas. Boh.
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