8 
GEOMELANIA. 
7 2. G. mi an or Adams. 
T. turrita, truncata, tenuiuscula, confertim et arcuatim 
costato-striata, hyalino-alba ; anfr. 7 convexi, ultimus */ 4 longi- 
tudinis paulo superans; apertura ovali-subtriangularis ; perist. 
tenue, vix expansum, marginibus callo junctis, dextro et basali 
repandis; appendix linguaeformis obtusa. — Long. 10 '/ 2 , 
diam. 3 mill. Ap. fere 3 mill, longa, basi 2 lata. (Coll. Nr. 5.) 
Geomclania minor Adams Contrib. to Conch. N. 2. p. 18.*). 
— — Chemn. ed. II. Cycl. p. 214. t. 30. f. 21. 22. 
Habitat in insula Jamaica. 
Obs. Differt a praecedente anfractibus angustioribus , convexioribus, 
costis subtilionbus , confertioribus , peristomate vix expanso , appendice lin- 
guaeformi obtusa. 
8 3. G. fortis Adams* f 
Testa elongato - conica , albida; spira rectilinearis ; apex 
truncatus amissis circa 8 anfractibus; anfr. superst. 7, modice 
convexi, costis circa 36 subtilibus, perarcuatis sculpti; sutura 
bene impressa ; apertura ovata, late et profunde effusa ; labrum 
expansum et reflexum, parte linguaeformi in extremitate antica, 
oblique et deorsum valde producta, angusta, acuta; labium 
incrassatum, ab anfr. penultimo subdisjunctum. — Long. 0,6 ; 
lat. max. 0,18; lat. min. 0,15 poll. (Ad.) 
Geomclania fortis Adams Contrib. to Conch. N. 6. p. 94. 
Habitat in insula Jamaica. 
9 4. G. magna Adams* f 
Testa elongato - conica , albida; spira rectilinearis; apex 
truncatus amissis 8 anfractibus; anfr. superst. 6'/ 2 , modice 
convexi, costis circa 38 subtilibus, perarcuatis sculpti; sutura 
bene impressa ; apertura ovata, late et profunde effusa ; labrum 
bene expansum et reflexum, parte linguaeformi in extremitate 
antica lata et obtusa, oblique et lateraliter producta; labium 
incrassatum, ab anfr a ctu penultimo leviter separatum. — 
*) This may be only a variety of the preceding ( G . Jamaicensis ), but 
the dimensions given below are those of the largest, among several hund- 
reds, which we have seen. The most essential difference is in the aper- 
ture, which is but slightly effuse ; the labrum is throughout much expanded 
convexly , and is by no means so disproportionately produced in the lower 
part. The apex is truncate with the loss of 6 or 7 whorls. — Mean diverg- 
ence 14 to 15°; length 0,41; greatest breadth 0,13, least br. 0,14 inch. 
(Adams 1. c.) 
