HELICINA §. 9. 
379 
88. II. citrina Grate Soup. 651 
T. subdepressa, tenuis, striatula, nitida, diaphana, citrina; 
spira brevis, subconoidea; anfr. 5 planiusculi, celeriter accres- 
centes , ultimus magis minusve depressus et subangulosus, 
basi convexior; apertura vix obliqua, late semiovalis; colu- 
mella brevis, arcuata, basi truncata, angulatim in peristoma 
simplex, breviter expansum abiens. — Operc. extus testaceum, 
intus purpureum, costa elevata alba munitum. — Diam. maj. 
16, min. 13, alt. 10 mill. (Coll. Nr. 57.) 
Helicina citrina Grat. in Act. Bord. XI. p. 413. t. 3. f. 15.* *) 
— — Chemn. ed. II. N. 57. p. 45. t. 3. f. 4-9. t. 7. f. 1. 2. 
— polita Sow. in Proc. Zool. Soc. 1842. p. 7.**) 
— — Sow. Thes. N. 33. p. 8. t. 2. f. 76 — 81. 
— — Reeve Conch, syst. II. t. 186. f 9. 
fi. Minor, nnicolor vel ad suturam albofasciata ; diam. maj. 8'/ 2 , min. 7, 
alt. 6 mill. 
Habitat in insulis Luzon, Mindanao, Zebu (H. Cuming). 
89. II. similis Sowerby. f 652 
T. H. politae simillima, sed impolita, concentrice leviter 
striata, fusca. (Sow.) — Diam. 13 '/ 2 , alt. 8% mill. (Ex ic.) 
Helicina similis Sow. in Proc. Zool. Soc. 1842. p. 8. 
— — Sow. Thes. N. 34. p. 8. t. 3. f. 130. 
Habitat in insula Guadeloupe. 
smooth, the striae of growth being very light; sometimes with a few very 
light spiral striae : apex obtuse : spire convex conic : whorls nearly four and 
one-half, subplanulate, with a rather deep suture : last whorl much depressed 
or even sinuate between the periphery and suture at its termination: aper- 
ture compressed above, expanded laterally: lip rather thick, moderately 
reflected along the middle only; with a notch like that of //. maxima Sow. 
— This species differs from H. maxima in the flattening of the whorls, 
which renders the spire conic; in the compression of the aperture from 
above , and the slight reflection of the lip ; it is also more solid and less 
convex beneath. (Adams 1. c.) 
*) T. orbiculato-depressa , subcarinata, aurantia, splendente, laevigata, 
pellucida, subtiliter striata; apertura subtriangulari ; labro reflexo , acuto; 
anfract. 5. — Alt. 10, diam. 16 mill. — Manilla. (Grat. 1. c.) 
**) T polita, tenui, pellucida, plus minusve depressa et angulata; anfr. 
superne subcomplanatis, infra ventricosis ; labio interno tenui, antice paululum 
inflato ; columella angustata , ad basin leviter angulata ; labio externo tenui, 
expanso , reflexo , super angulum plus minusve depresso ; operculo interne 
rubro, externe submargaritaceo. - Alt. 0,40; lat. 0,60 poll. (Sow, 1. c.) 
