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Show 1870.] MR. H. ADAMS ON NEW SHELLS FROM THE RED SEA. 791 submedianis, parvis; latere antico ovali; latere postico acuminata ; margine ventrali valde arcuato, postice subsinuato; flexura distincta. Long. 10, alt. 8, lat. 5 mill. A species closely allied to T. robusta, Hanley. It is, however, smaller, less convex, thinner, and more ovate than that species. CORALLIOPHAGA STRIOLATA, H. Ad. (Plate XLVIII. fig. 12.) C testa tenui, subdiaphana, oblongo-ovata, valde ineequilaterali, compressa, area mediana striis elevatis, arcuatis, radiantibus ornata, pallide virente; umbonibus antemedianis, parvis, proxi-mis; margine dorsali antice declivi, postice subrecto; margine ventrali arcuato; latere antico rotundato; latere postico sub-truncato. Long. 9, alt. 5, lat. 3 mill. LUCINA FIELDINGI, H. Ad. (Plate XLVIII. fig. 13.) L. testa solida, rotundata, convexa, subeequilaterali, concentrice conferte tenuilirata, radiatim subtilissime striata, alba, umbonibus parvis, submedianis, acutis; lunula convexa ; latere antico subangulato, latere postico circulari. Long. 15, alt. 14, lat. 8£ mill. LUCINA CONCINNA, H. Ad. (Plate XLVIII. fig. 14.) L. testa solidula, rotundata, convexa, subobliqua, radiatim costis cre-bris, in medio fere obsoletis, et concentrice lirulis confertis albida ; umbonibus submedianis, prominentibus ; lunula magna, lanceolata, vix circumscripta,- margine crenulato. Long. 9|, alt. 9, lat. 6 mill. LUCINA ELEGANS, H. Ad. L. testa tenui, subrotundato, modice convexa, eequilaterali, striis minutis, confertis, radiantibus, et lirulis subdistantibus concentricis insculpta, alba; umbonibus medianis, prominulis, acutis; lunula parva, cordata, excavata ; latere antico subcirculari; latere postico subtruncata ; margine crenulato. Long. 7, alt. 7, lat. 4\ mill. LUCINA (CYCLAS) MACANDREAE, H. Ad. (Plate XLVIII. fig. 15.) L. testa solida, rotundata, eequilaterali, ventricosa, costis arcuatis numerosis, radiantibus, divaricantibus, et sulcis concentricis sub-irregularibus insculpta, costis extra marginem in spinas terminan-tibus ; umbonibus medianis, acutis, anteversis; lunula elongato - cordata, prominente, vix circumscripta. Long. 16, alt. 16, lat. 10 mill. MYSIA TUMIDA, H. Ad. (Plate XLVIII. fig. 16.) M . testa oblique rotundata, tumida, tenui, ineequilaterali, striolis confertis radiantibus et concentricis obsolete decussata; umboni- PROC. ZOOL. Soc-1870, No. LIII. |
