242 SMITH : MOLLUSCA OF TRINIDAD. 
careful study of these forms, I am inclined to consider it advis- 
able to regard them as constituting three distinct species. 
The variety ¢yfica forms the typical &. aureolus, the vars. 
Jasciata and imperfecta constituting the second species (LB. ¢2nz 
tartus n. sp.), and var. Razsonzt the third (B. Rawsonts of H. 
Adams),* originally described from Tobago. 2. Uhaceus of 
Férussac (in part) is very closely allied to B. aureolus, but the 
identification of that species is very uncertain. 
Never having seen examples of Guppy’s var. aldescens, I 
am unable to express any opinion respecting its affinity. 
21 part.—Bulimulus (Drymeeus) trinitarius n. sp. 
TL WINES 8 7s 
Bulimulus aureolus vars. fasciata and imperfecta Guppy, Ameri- 
can Journ Conch, 1871; vol. vi. p) 3085) Jeoum~non 
Conch., 1893, vol. vil., p. 218-2109. 
Testa elongata, superne acuminata, anguste perforata, alba, 
ad apicem fusca, zonts angustis fuscts (in anfr. penult, tribus, tn 
ultimo guinis) cincta,; spira mediocriter acuminato-conica ; an- 
tractus 6 regulariter accrescentes, supremt duo embryonales minute 
punctato-reticulati, convext, celert convextuscult, incrementt linets 
extlibus obliguis, stritsque spiralibus tenutbus sculptt, ultimus 
zonis duabus infimis ceterts latioribus ; apertura inverse subaurt- 
jormis, longtt. totius 4 haud equans, alba, fusco-zonata ; labrum 
tenue, antice subexpansum, columella rectiuscula, supra rimam 
reflexa. 
Longtt. 19 millim., diam. 9; apertura Q longa, 5 lata. 
This species is banded like B. wincentinus Pfr., but is very 
different in form. In the only two adult specimens I have seen, 
the zones on the body-whorl have a tendency to become more 
or less interrupted here and there. It may be the same as 
B. rufolineatus Drouet from Guiana, but it has five instead of 
four bands on the body-whorl, and the form is not quite the 
same. 
21 part.—Bulimulus (Drymzeus) Rawsoni H. Adams. 
Hab.: Also from Tobago. 
*Proc. Zool. Soc., 1873, p. 208, pl. 23, f. 12. 
eG. evil. OcinscG, 
