HELICINA 8. 9. 379 
88. Hi. citrina Grateloup. 651 
T. subdepressa, tenuis, striatula, nitida, diaphana, citrina ; 
spira brevis, subconoidea; anfr. 5 planiuseuli, 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. *) 
-— - U6Ghenn. edo HW. N. 97. p.45. t3. £.4— 9: t. 7. £. Y. 2. 
— . polita Som. in Proc. Zool. Soc. 1842. p. 7. **) 
— — . Som. Thes. N. 33. p. 8. t. 2. f.-76—81. 
— — . Reeve Conch. syst. II. t. 186. f 9. 
£. Minor, unicolor vel ad suturam albofasciata; diam. maj. 8'/,, mim. 7, 
alt. 6 mill. 
Habitat in insulis Luzon, Mindanao, Zebu (H. Cuming). 
89. H. similis Sowerby. 1 652 
T. H. politae simillima, sed impolita, concentrice leviter 
striata, fusca. (Sow.) — Diam. 13'/,, alt. 8'/;, mill. (Ex ic.) 
Helicina similis Som. in Proc. Zool. Soc. 1842. p. 8. 
€ — Som. 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 7. zaaxima Som. 
— "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 l. c.) 
*) T. orbiculato -depressa, subcarinata, aurantia, splendente, laevigata, 
pellucida, subtiliter striata; apertura subtriangulari; labro reflexo, acuto; 
anfract. 5. — Alt. 10, diam. 16 mill. — Manmilla. (Grat. l. 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. l. e.) 
