348 PLECOTREMA $. 2—4. 
nitens, fusco-rubella; spira mucronata, apice acuminata; anfr. 
8—8!/, parum convexi, vix discreti, ultimus spira longior, 
basi attenuatus; apertura oblonga, denticulis 4 coaretata : 2 
parietales quorum superus punetiformis; 1 columellaris, com- 
pressus; | saepe bituberculatus in peristomatis margine dextro; 
perist. rectum, crassum, marginibus callo concolore junctis, 
columellari mediocriter dilatato, patente. — Long. 9!/j, diam. 
D!/ mill. Apert. 5 mill. longa, 3 lata.* (M.) 
Plecotrema Siamensis Morelet Séries conch. IV. 1875. p. 273. t. 13. f. 6. 
Habitat Siam (Bocourt). 
* 
20. imperforata H. & A. Adams. I. 106. II. 81. — Ins. Negros 
Philippinarum. 
231. Pl. hirsuta Garrett. 
»lesta imperforata, solida, cornea; spira acuta, convexo- 
conica, circa dimidium totius longitudinis formans; anfr. 8—9 
(embryonales 2), plano-convexi, ultümus tumidus, transverse 
suleatus; sulci profundi, liras interjacentes fere aequantes, 
16—18 in anfr. ultimo, pilis brevibus curvatis muniti; sutura 
obsolete impressa; apertura subverticalis, angusta, contracta, 
quinquelobata, albida; perist. varice externo forti munitum, 
margine interiore labiatum, infra rotundatum, supra sinuosum, 
dentibus 2 tubercularibus validis in medio labii interioris mu- 
nitum; columella expansa, plica compressa, obliqua munita; 
regio parietalis tenuiter callosa, bidentata: dente superiore 
parvo, tubereulari, denti labiali supero opposito, inferiore 
compresso, bifurcato, in aperturam intrante. — Long. 7, diam. 
4,0 mill.* (Garr. angl.) 
Plecotrema hirsuta Garr. in Amer. journ. conch. VII. 1872. p. 219. t. 19. f. 1. 
— — . Schmeltz in Mus. God. cat. V. p. 87. 
Habitat in insulis Viü. 
8:2) 
22. Cubensis Pfr. (Coll. 11.) I. 107. II. 81. — Cardenas insulae Cuba. 
8.14, 
»5. Pl. marginalis (Auricula) Grateloup. t 
Testa imperforata, ovato-ventricosa, solida, luevigata; 
spira obtuse conica, apice mamillato; anfractibus 1 marginatis, 
