790 MR. H. ADAMS ON NEW SHELLS FROM THE RED SEA. [Nov. 15, 
Tena (Peron#a) scituta, H. Ad. (Plate XLVIII. fig. 7.) 
T. testa tenui, ovato-trigona, convewiuscula, subequilaterali, con- 
centrice concinne striatula, albida vel luteo-albida; umbonibus 
parvis, prominulis, submedianis ; latere antico ovali ; latere po- 
stico subtriangulari, subcompresso ; margine ventrali lente arcuato ; 
flexura valida. 
Long. 17, alt. 11, lat. 5 mill. 
TeLiina (PERON#A) ERYTHR#ENSIS, H. Ad. (Plate XLVIII. 
fig. 8.) 
T.. testa tenuiuscula, transversa, convexiuscula, inequilaterali, con- 
centrice et oblique lirata, pallide carnea; umbonibus postme- 
dianis, parvis; latere antico ovato; latere postico breviore, 
compresso, antice oblique truncato; margine ventrali antice arcu- 
ato, postice fere recto; flexura valde distincta. 
Long. 16, alt. 93, lat. 6 mill. 
TreLLinaA (PERON#ZA) TRIRADIATA, H, Ad. (Plate XLVIII. 
fig. 9.) 
T. testa tenui, transversa, elongato-ovata, inequilateralt, concentrice 
conferte striata, albida, radiis rubris tribus picta ; umbonibus ad 
trientem posticalem sitis ; latere antico ovato; latere postico 
breviore, subacuminato, ad apicem oblique subtruncato ; margine 
ventrali arcuato ; flexura satis distincta. 
Long. 114, alt. 6, lat. 4 mill. 
TrLuLINA (PERON#A) LactreEa, H. Ad. 
T. testa tenuiuscula, transversa, valde inequilaterali, concentrice 
striata, striis posticis lamellosis, et partim oblique striata, 
lactea ; umbonibus parvis, prominulis, ad quadrantem posticum 
sitis ; extremitate antica semiovali ; extremitate postica brevi, 
valde arcuata, infra angulata; margine ventrali rectiusculo ; 
flexura mediocri. 
Long. 10, alt. 6, lat. 3 mill. 
Tevuina (ArcopaatA) tssevI, H. Ad. (Plate XLVIII. fig. 10.) 
T. testa tenuiuscula, suborbiculari, convera, equilaterali, striis 
lamellosis numerosis concentricis ornata, pallide lutea, radiis 
rubris picta ; latere antico rotundato ; latere postico subangulato ; 
flexura inconspicua. 
Long. 11, alt. 10, lat. 5 mill. 
This species very much resembles 7. balaustina, Linn. ; but the 
posterior side is somewhat more angulated, and the concentric strize, 
which are less numerous, are much stronger. 
TeLvtrna (ArcopactaA) savicnyl, H. Ad. (Plate XLVIII. 
fig. 11.) 
T. testa tenuiuscula, subovata, convexa, subequilaterali, concentrice 
conferte slriata, striis postice fere obsoletis, albida; umbonibus 
