71 
dentation elegantly crossed with slight striz, the effect of which, as 
well as the darker line, is partially visible throughout the sutures. 
v 7. Heuirx conicoipes, nobis. H. testd imperforatd, trochi- 
Sormi, acute carinatd, tenui, pellucidd, luteo-corned ; spiraliter 
leviter striatd, striis ad suturam majoribus, confertioribus ; 
apice mamillari ; anfractibus 7, superioribus subconvexis, duo- 
bus ultimis planulatis, ultimo subtus convexo, nitido, ad cari- 
nam et in medio depresso ; aperturd trapeziformi, subtus arcu- 
atd; peristomate simplici, acuto, subtus flexcuoso, marginibus 
callo tenui junctis. 
Long. =; lat. 5%; alt. 4, une. 
8. Buximus citrinus, Bruguiére; Reeve, Conch. Icon. Bul. 
pl. 31. fig. 187 a. 
9. Buximus cuuoris, Reeve, Conch. Icon. Bul. pl. 37. fig. 223. 
_ 10. CycLtostroma Borneensts, nobis. C. testd suborbiculari, 
depresso-conoided, acuminatd, albidd, fusco-variegatd, maculis 
ad suturam, cinguloque infra medium fusco ornatd ; striis ob- 
liquis minutis, aliisque circularibus minutissimis impressd ; an- 
Sractibus quinque planiusculis, carinatis; ultimo magno, margine 
acute carinato, circa umbilicum obtuse angulato ; apie dub 
circulari ; peritremate albo, reflexo; supra productiore, subtus 
refleco, ad columellam subsinuato ; umbilico magno, profundo ; 
operculo corneo, tenut. 
Long. 14%; lat. 1,%5; alt. 3% unc. 
Varietas minor, magnitudine solum diversa. 
Shell bearing some characters in common with both C. aquilum, 
Sow., and C. acutimarginatum, Sow. ; but having a more depressed 
spire, and flatter whorls than either of those species. 
11. Cyciosroma, apparently C. parvum, Sow. Thes. Conch. Cycl. 
fig. 254, 255. 
12. CycLosroma unDaTuM, nobis. C. testd globoso-pyramidali, 
tenui, pellucidd, albd, lineis hyalinis undatis decurrentibus or- 
natd, tenuiter striatd; anfractibus 6, parum rotundatis, pri- 
mis conicis regulariter crescentibus ; ultimo magno, obtusé cari- 
nato; aperturd circulari, supernée angulatd ; peritremate lato, 
expanso, vie nist ad columellam reflexo ; suturis mediocribus ; 
none —— 
Long. 58; lat. 355; alt. ,% une. 
This species belongs to the division of the genus of which C. leve, 
Gray, may be considered the type. 
13. CycLOSTOMA TENUILABIATUM, nobis. OC. testd discoided, 
spird depressd, pland, colore pallido, superné castaneo-macu- 
laté et undulatd ; epidermide luteo-castaned, indutd ; anfrac- 
tibus 5 rotundatis, 4 primis levibus, ultimo lineis impressis 
irregularibus ruguloso ; suturd impressd; aperturd circulari ; 
peritremate duplici ; interno simplici, superné emarginato ; ex- 
