158 HELIX §. 43. 



847. H. Troilus Gould. 



T. unibilicata, depresso-turbiiiata , solida, conferlim rugu- 

 loso-slriata, carinala, castaneo-fulva vel flavescens, castaneo- 

 bifasciala, nitida; spira conoidea, apice obtusiusculo pallida: 

 sutura impressa, marginala; anfr. Sy^ convexi, sensim accre- 

 scentes, ullimus non descendens, basi convexiusculus, lineis 

 spiralibus sub lente notatus; umbilicus mediocris, conicus, V5 

 diametri superans; apertura obliqua, rotundato-lunaris, intus 

 niargaritacea; perisl. rectum, marginibus subconniventibus, 

 supero antrorsum arcuato, basali subincrassato, infra carinam 

 repando. — Diam. maj. 18, min. i^Y^, alt. 9 mili. (xMus. Cuming.) 

 Helix Troilus (Caracoila) Gould in Proc. Bost. Soc. -ISie. p. 



176. et Exped. Siiells p. 2 3. Ed. 



1851. p. 58. f. 55. 



— — Pfr. Monogr. I. p. 123. N. 318 a. 



— — Chemn. ed. II. Helix N. 750. l. 109. f. 25. 2^3. 

 Habitat in insulis Samoa. 



848. Helix curvilabrum Adams et Reeve. 



T. umbilicata, turbinata, solida, striata, castanea, carinata, 

 supra carinam luteo-unifasciata; s[)ira convexo-conoidea, apice 

 obtusiuscula; anlr. 5 planiusculi, ultimus non descendens, basi 

 acute carinatus, subtus vix convexior; umbilicus infundibuli- 

 formis, Yg diametri subaequans; apertura perobliqua, subtri- 

 angularis, intus livida; perisl. subcallosum, maiginibus remo- 

 tis, supero antrorsum dilatato , incurvato, basali arcuato, in- 

 crassato. — Diam. maj. ISy^, min. 12, alt. 7 mill. (Mus. 

 Cuming.) 



Helix curvilabriim A. Adams et Reeve Voy. Samarang. Moll. p. 



59. t. U. f. 9. 



— — Chemn. ed. II. Helix N. 970. t. 147. f. 18. 19. 

 Ilabitat in insulis Philippinis. 



849. H. Merziana Pfr. 



T. umbilicala, conoidea, tenuiuscula, superne subtiliter 

 ruguloso-striata, fusca, strigis et maculis lutescentibus mar- 

 morata; spira convexo-conoidea, obtusula; sutura impressa, 

 marginata; anfr. Sy^ convexiusculi , ultimus acute carinatus, 

 antice non descendens, basi subplanus, minute radiato-striatus, 

 flavidus, juxta carinam compressam castaneo-unifasciatus; um- 

 bilicus latiusculus, extus subinfundibuliformis; apertura per- 

 obliqua, securiformis, intus iridoscens; perist. subconnivens, 

 margine doxtro tenui, antrorsum curvato, subdepresso, colu- 

 mellari et basali perarcualis, subincrassaiis. — Diam. maj. 23, 

 niin. 20, alt. ^y^ mill. (Mus. Cuming.) 



