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Show 6 MR. H. ADAMS ON NEW SHELLS. [Jail. 13, CORBULA SULCULOSA, H. Ad. (Plate I. fig. 2.) C. testa solida, acuminato-ovata, albida, subcequivalvi, sulcis subdistantibus ornata ; umbonibus medianis, prominenti-bus, proximatis; latere antico ovali, latere postico acuminato margine dorsali antice subincurvo, postice arcuato, margine vix sinuato; declivitate umbonali valde angulata. Long. 9, alt. 6, lat. 6 mill. Hab. Red Sea (Coll. M'Andrew). TELLINA (TELLINELLA) VLRGULATA, H. Ad. (Plate I. fig. 3.) T. testa solidiuscula, subovali, subcequilaterali, concentrice lirata, liris postice rugose lamellosis, albida, radiis rubro-interruptis picta; latere antico ovali, latere postico ad extremi-tatem subtruncato; plica valida; margine dorsali antice leviter arcuato, postice vix recto ; margine ventrali convexo, postice intus albida, ad marginem obscure radiata. Long. 25, alt. 20 mill. Hab. Red Sea (Coll. M'Andrew). TELLIDORA PUSILLA, H. Ad. (Plate I. fig. 4.) T. testa parva, subtriangulari, solida, concentrice lamellosa, lamellas tenuissime radiatim striata; lamellis subirregularibus, subremotis, ad latus posticum serratis, pallide flava; umbonibus submedianis, acutis, compressis; margine dorsali antice subincur-vato, postice subarcuato; margine ventrali convexo, postice sinuato et angulato; flexura conspicua; valva utraque convexa. Long. 10, alt. 10, lat. 4 mill. Hab. Red Sea {Coll. M'Andrew). The two other known species of this genus, viz. T. burneti and T. crystallina, are from Mazatlan and West Columbia. In the former, one valve is convex and the other slightly concave, while in T. crystallina and T. pusilla both valves are convex. LUCINOPSIS (LAJONKAIRIA) ELEGANS, H. Ad. (Plate I. fig. 5.) L. testa parvula, tenui, ovato-quadrata, alba, lineis incrementi remotis, et striis tenuissimis confertis divaricantibus, indentatis insculpta; umbonibus medianis, approximatis, prominentibus; lunula elongato-ovali, linea angusta circumscripta; extremitate antica ovali, extremitate postica latiore, vix convexa, cum margine dorsali angulum subarcuatum formante; margine ventrali subrecto. Long. 11, alt. 10, lat. 5 mill. Hab. Red Sea (Coll. M'Andrew). SEMELE MACANDREA, H. Ad. (Plate I. fig. 6.) S. testa oblongo-ovali, in eequilaterali, solidula, albida, erectis tenuibus concentricis ornata, interstitiis minutissime striatis; umbonibus prominentibus, postmedianis, contiguis margine dorsali postice subrecto, antice incurvato, margine |
