10 GEOMELANIA. 
extremitatem superam ab anfractu penultimo separatum. — 
Long. 0,47; lat. max. 0,125; lat. min. 0,11 poll. (Ad.) 
Geomelania typica 4dams Contrib. to Conch. N. 6. p. 95. 
8. Var. pygmaea: long. 0, 3 poll. 
Habitat in insula Jamaica. 
13 8. €. expansa Adams, 1 
T. valde elongata, conica, albida, costis subconfertim 
sculpta validis subarcuatis, antce subplanulats, minus regu- 
laribus quam in 6. minore, et obsoletis in dimidio antico an- 
fractus ultimi; spira rectilinearis; apex truncatus; anfr. superst. 
fere 7, modice convexi; sutura bene impressa; apertura ovata, 
lateraliter valde expansa, antüce late et subprofunde effusa; 
labrum leviter incrassatum , superne subreflexum, basi magis 
reflexum et dilatatum; labium tenuiusculum, in concavitatem 
regionis centralis anfractus penultüimi appresse subreflexum. — 
Long. 0,53; lat. max. 0,185; lat. min. 0,15 poll. (Ad.) 
Geomelania expansa dams Contrib. to Conch. N. 2. p. 18. 
Habitat in insula Jamaica. 
14 9. €&. affinis Adams. 41 
T. similis G. expansae, apertura antice perprofunde 
effusa et parte linguaeformi labri angusta, oblique valde pro- 
ducta; apex truncatus amissis circa 7 anfr. — Dimens. fere 
praecedentis. 
Geomoelania affinis .4dams Contrib. to Conch. N. 6. p. 96. 
Habitat in insula Jamaica. 
15 10. G. media Adams. 1 
T. subcylindrica, albida, costis circa 35 perarcuatis, pro- 
minentibus, acute marginatis subtilibus sculpta; spira rectili- 
nearis; apex truncatus; anfr. superst. 6, modice convexi; 
sutura bene impressa; apertura ovata, late effusa; labrum 
modice expansum et incrassatum, parte linguaeformi in extre- 
mitate antica lateris dextri, oblique distincte producta, sub- 
angusta, subacuta; labium incrassatum, praeter extremitatem 
superam ab anfr. penultimo subdisjunctum. — Long. 0,4; 
lat. max. 0,107; lat. min. 0,1 poll. (Ad.) 
Geomelania media Adams Contrib. to Conch. N. 6. p. 96. 
Habitat in insula Jamaica. 
