1870.] MR. H. ADAMS ON NEW SHELLS FROM THE RED SEA. 791 
submedianis, parvis ; latere antico ovali; latere postico acumi- 
nato ; margine ventrali valde arcuato, postice subsinuato; flexura 
distincta. 
Long. 10, alt. 8, lat. 5 mill. 
A species closely allied to 7. robusta, Hanley. It is, however, 
smaller, less convex, thinner, and more ovate than that species, 
Corauiopuaca striotata, H. Ad. (Plate XLVIII. fig. 12.) 
C. testa tenui, subdiaphana, oblongo-ovata, valde inequilaterali, 
compressa, area mediana striis elevatis, arcuatis, radiantibus 
ornata, pallide virente ; umbonibus antemedianis, parvis, proxi- 
mis ; margine dorsali antice declivi, postice subrecto ; margine 
ventrali arcuate; latere antico rotundato; latere postico sub- 
truncato. 
Long. 9, alt. 5, lat. 3 mill. 
Lucina rretpiner, H. Ad. (Plate XLVIII. fig. 13.) 
L. testa solida, rotundata, convexa, subequilaterali, concentrice 
conferte tenuilirata, radiatim subtilissime striata, alba, umboni- 
bus parvis, submedianis, acutis ; lunula convexa ; latere antico 
subangulato, latere postico circulari. 
Long. 15, alt. 14, lat. 82 mill. 
Lucina concrnna, H. Ad. (Plate XLVIII. fig. 14.) 
L. testa solidula, rotundata, convewa, subobliqua, radiatim costis cre- 
bris, in medio fere obsoletis, et concentrice lirulis confertis in- 
sculpta, albida ; umbonibus submedianis, prominentibus ; lunula 
magna, lanceclata, vix circumscripta ; margine crenulato. 
Long. 93, alt. 9, lat. 6 mill. 
Lucina Evecans, H. Ad. 
L. testa tenui, subrotundata, modice convexa, equilateral, striis 
minutis, confertis, radiantibus, et lirulis subdistantibus concen- 
tricis insculpta, alba; umbonibus medianis, prominulis, acutis ; 
lunula parva, cordata, excavata ; latere antico subcirculari ; latere 
postico subtruncato ; margine crenulato. 
Long. 7, alt. 7, lat. 42 mill. 
Lucia (Cycxas) macanpre», H. Ad. (Plate XLVII. fig. 15.) 
L. testa solida, rotundata, e@quilaterali, ventricosa, costis arcuatis 
numerosis, radiantibus, divaricantibus, et sulcis concentricis sul- 
irregularibus insculpta, costis extra marginem in Spinas terminan- 
tibus ; umbonibus medianis, acutis, anteversis ; lunula elongato- 
cordata, prominente, via circumscripta. 
Long. 16, alt. 16, lat. 10 mill. 
Mysra tumipa, H. Ad. (Plate XLVIII. fig. 16.) 
M. testa oblique rotundata, tumida, tenui, inequilaterali, striolis 
confertis radiantibus et concentricis obsolete decussata ; umboni- 
Proc. Zoou. Soc.—1870, No. LIII. 
