HELIX 8. 54. 211 
spira vix elevata; sutura filo-marginata; anfr. 6 lentissime ac- 
crescentes, convexiusculi, ultimus superne angulatus (angulo 
antice evanescente); umbilicus parvus, pervius; apertura obli- 
qua, lunaris, dentibus 2 basalibus longe intrantibus coarcetata; 
perist. simplex, rectum. — Diam. maj. 5, min. 4?/, alt. 29 mill. 
(Coll. Binney. An adult.?) 
Helia lasmodon Phill., Pfr. Mon. Helic. IV. p. 153. 
— — JBinn. Terr. Moll. IV. p. 122. (An eadem: H. 
macilenta Sh.? ) 
Hyalina lasmodon (Gastrodonta) Aib. Helic. ed. Mart. p. 74. 
Gastrodonta lasmodon Mórch in Journ. Conch. XIII. p. 380. 
Habitat in Alabama. 
1292. H. sculptilis Pease. T 
«H. testa conoidali, solidiuscula, flavicante, umbilicata; 
spira obtusa, depressa, vix oblique confertim rugoso-costulata; 
anfr. 7, medio excavatis, ultimo ad peripheriam acute carinato; 
basi plano- convexa, radiatim conferte tenuissime costulata; 
umbilico cavernoso, ad januam constricto; margine acuto, una 
cum labio continuo; apertura subrhomboidea; fauce lamellis 
duabus volventibus instructa; labro simplici, acuto. — Diam. 6, 
alt. 3 mill.» (P.) 
Helia sculptilis Pease in Proc. Zool, Soc. 1864. p. 669. 
Habitat in insula Mangier Oceani pacifici centralis. 
* 
1298. (9555. margarita Pfr. (Coll. Nr. 580.) H. hyalina Ad., opalina 
Ad., infortunata Bland. —  Odontostoma, opalinum Pfr. Mon. I. 
p. 12. — Sagda opalina (Proserpinula) A?. 78. — Jamaica. 
1294. H. Bouyeri Crosse et Fischer. 
T. imperforata, orbiculato-convexiuscula, tenuiuscula, laevi- 
gata, pellucida, nitidissima, fulvo- cornea; spira parum elevata, 
verüce minuto; anfr. 5!/5 convexiusculi, regulariter accrescen- 
tes, ultimus non descendens, vix convexior, medio leviter im- 
pressus; apertura parum obliqua, lunaris; perist. rectum, sub- 
callosum, margine supero antrorsum curvato; basali bidentato: 
dente columellae propiore parvulo, nodiformi, altero majore, 
subquadrato. — Diam. maj. 7?/,, min. 7, alt. 4 mill. (Mus. 
Cuming.) 
Heli; Bouyei Crosse et Fisch. in Journ. Conch. XL 1863. 
p. 269. t. 9. f. 7. (correct. Bouyer: Cr. et 
F. ibid. XII. p. 326.) 
Habitat Pulo Condor Cochinchinae. 
