BOURCIERA. 
168 
XXXIII. Bourciera PIr. 
Pfr. Mon. Pneiim. p. 812. — Gray Caff Phan. p. 223: 
genus Realianorum. — //. et A. Adams Gen. II. p. 300: 
genus Pomatiasinarum. 
Species unica : 
1. heliciiiaefonnii ff*fV. ( Gray Phan. p. 223. — 
Ad. Gen. p. 300. t. 87. f. 3. — - Cyclost. helicini - 
forme Pfr. in Proc. 1852. p. 151. — Chemn. ed. 
nov. p. 243. t. 32. f. 8—10.) Mon. p. 312. 
Cyclostomacea . 
incertae sedis vel omnino dubia. 
Cyclostoma 
1. patera IPfi* (Proc. 1852 p. 61. — Chemn. ed. nov. 
p. 336. t. 43. f. 23—25. — Gray Phan. p. 224.) . Mon. p. 314. 
2. agHclaatinanB Horn Hr. et Jaeq. Voy. Pol 
Sud. Zool. V. p. 48. t. 12. f. 7 — 10. - — Oceania. — 
An potius Vaivatae species?) ........ - - 316. 
3. C. Iia^icarlnatiiin Pfr. 
T. vix perforata , oblongo - turrita , truncata , spiraliter 
lirata, costulisque confertis, subinterruptis (8 — • 4 fasciculum 
formantibus) sculpta, decolorata, vestigia fasciarum interrupta- 
rum fuscularum monstrans; spira subregulariter attenuata ; su- 
tura confertim denticulata; anfr. superst. 5 parum convexi, 
ultimus antice breviter solutus , basi carinis 2 — 3 vaiidis mu- 
nitus; apertura subverticalis , angulato-ovalis; perist. duplex: 
internum vix expansum , externum patens , superne et latere 
sinistro dilatatum. — - Long. 18— 19, diam. 7 — 8 mill. Ap. 
5—6 mill, longa. (Coll. Nr. 355.) 
Cyclostoma basicarinaium Pfr. in Malak. Bl. II. 1855. p. 101. t. 4. f. 2. 3. 
Testae subfossiles modo lectae sunt in „La Grange“ prope 
Frederiksted insulae St. Croix. 
4. C. cliordifermin Pfr. 
T. angustissime perforata, oblongo-turrita, truncata, spi- 
raliter obsolete lirata et confertissime chordato - costulata, de- 
colorata; spira subregulariter attenuata; sutura confertim den- 
ticulata; anfr. superst. 4 1 / 2 parum convexi, ultimus antice bre- 
