136 MEGALOMASTOMA $. 1. 2. 
fasciatus, basi subattenuatus, vix brevissime solutus; apertura 
verticalis, angulato-ovalis, integra, intus luteo-fulvida, fascia 
externa paululum transmeante; peristoma incrassatum, vix 
liberum, marginibus continuis, columellari cum externo ad 
insertionem angulum formante, basal protracto, valde incras- 
sato, reflexo, externo crassiusculo, reflexo. — Long. 19, diam. 
maj. 1!/, mill.  Apert. 6!/, mill. longa, vix 5 lata (absque 
peristomate).* (C.) 
Dacrystoma *) arboreum Crosse & Fisch. in Journ. Conch. XIX. 1871. 
p. 332. 
Habitat ad ripas fluminis Tsidsoubon insulae Madagascar 
(Grandidier). 
$. 2. 
4. complanatum Pfr. II. 80. III. 86. — Cuba. 
5. bituberculatum (Cyclostoma) Sow. (Coll. 1.) I. 127. II. 80. 
III. 86. — Cuba. 
6. procer Poey. (Coll. 2.) II. 81. III. 86. —  Pütel Cat. p. 120. — 
Isla de Pinos Cubae. 
7. ventricosum (Cyclostoma) Orb. (Coll. 3.) I. 128. II. 81. III. 
86. — Pülel Cat. p. 190. — Farcimen ventricosum Trosch. — Cuba. 
8. alutaceum (Cyclostoma) Menke. (Coll. 4.) I. 129. II. 81. III. 
86. — JPütel Cat. p. 120. — Cuba. 
9. digitale Gundl. (Cog. 5.) II. 81. III. 86. —  Pütel Cat. p. 120. 
— Cuba. 
10. Mani (Cycelostoma) Poey. (Coll. 6.) I. 128. II. 82. III. 87. — 
Pütel Cat. p. 120. — Cuba. 
11. Gundlachi Pfr. (Coll. 7.) II. 82. III. 87. —  Pütel Cat. p. 120. 
— Cuba. 
12. leoninum Pfr. (Coll. 8.) II. 82. III. 87. — üátel Cat. p. 120. — 
Cuba. 
13. auriculatum (Cycelostoma) Orb. (Coll. 9.) I. 129. II. 82. III. 
87. — Pütel Cat. p. 120. — Cyclostoma idolum Fér., bicolor Gould, 
solenatum .Poey. — Cuba. 
14. apertum Poey. (Col. 10.) II. 83. III. 87. —  Pütel Cat. p. 120. 
— Cuba. 
15. seminudum Poey. (Coll. 11.) II. 83. III. 87. — PPéátel Cat, p. 120. 
— Cuba. 
16. tortum (Turbo) Wood. (Coll. 12.) I. 126. II. 83. III. 87. — 
Pütel Cat. p. 120. —  Cyclostoma tortum Gray. —  Farcimen tortum 
JTrosch. — Var.: Megalomastoma ungula Poey. (fr. IIl. 84.) — 
Cuba. 
*) Daerystoma novum genus: ,testa vix perforata, oblongo-turrita, soli- 
dula, striata, epidermide tenui induta; anfr. sat numerosi; apertura angulato- 
ovalis; peristoma vix brevissime solutum, continuum, incrassatum, reflexum, 
margine basali protracto. — Opere.? — Genera Megalomastoma et Ompha- 
lotropis nostro generi valde vicina sunt, alterum forma testae et crassitudine 
peristomatis, alterum apertura angulato-ovali." 
