8 GEOMELANIA. 
29. €G. mimor Adams. 
T. turrita, truncata, tenuiuscula, confertim et arcuatim 
costato-striata, hyalino-alba; anfr. 7 convexi, ultimus !/, longi- 
tudinis paulo superans; apertura ovali-subtriangularis; perist. 
tenue, vix expansum, marginibus callo junctis, dextro et basali 
repandis; appendix linguaeformis obtusa. — Long. 10'/, 
diam. 3 mill. Ap. fere 3 mill. longa, basi 2 lata. (Coll. Nr. 5.) 
Geomelania minor dams Contrib. to Conch, N. 2. p. 18. *). 
— -— — Chemn. ed. II. Cycl. p. 214. t. 30. f. 21. 22. 
Habitat im insula Jamaica. 
Obs. Differt à praecedente anfractibus angustioribus, convexioribus, 
costis subtilioribus, confertioribus, peristomate vix expanso, appendice lin- 
guaeformi obtusa. 
3. G. forti« Adams. 1 
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. 0,13; lat. min. 0,15 poll. (Ad.) 
Geomclania. fortis dams Contrib. to Conch. N. 6. p. 94. 
Habitat in insula Jamaica. 
4. G. magna Adomes. T 
Testa elongato-conica, albida; spira rectilinearis; apex 
truncatus amissis 8 anfractibus; anfr. superst. 6'/,, 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 
incorassatum , ab  anfractu 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 ]. c.) 
