Zoological Society. 343 
ornatd ; spird brevi, conicd, apice acuta; anfractibus 5 planius- 
culis, ultimo acuté carinato, basi vix convexo, antice pariim deflexo, 
a latere subcompresso ; aperturd rhombed ; peristomate violaceo, 
margine supero expanso, superné impresso, columellari stricto, di- 
latato, plano, adpresso. 
Diam. 28, alt. 15 mill. 
Locality unknown. (Coll. Saul. et Metcalf.) 
8. Hexrx pranissima, Pfr. Hel. testd umbilicatd, depressissimd, 
lenticulari, tenui, utrinque oblique rugoso-costatd, albidd, subtis 
interdum corneo-fasciatd ; anfractibus 53 convexiusculis, acute 
carinatis (carind compressd, prominente, serrata), ultimo antice vir 
descendente, basi convexiore, circa umbilicum mediocrem, spiralem 
subangulato ; apertura depressd, angulato-lunari ; peristomate sim- 
plice, margine basali plane arcuato, reflexo. 
Diam. 113, alt. 43 mill. 
Locality unknown. (Coll. Walton.) 
Similar to H. amanda, Rossm., from which it may be distinguished 
by its thin and flattened shell, its umbilicus, and the peristome not 
thickened. 
9. Hexrx riticosta, Pfr. Hel. testd subobtecte perforatd, depresso- 
globosd, reqgulariter costatd (costis filiformibus), tenuiusculd, car- 
neo-albidd, lineis fuscis obsoletis cinctd ; anfractibus 45 convezis, 
ultimo antice defleco; aperturd lunato-orbiculari ; peristomate 
acuto, intus subincrassato, labiato, marginibus conniventibus, callo 
introrsum diffuso roseo junctis, dextro vix expanso, columellari 
dilatato, reflexo, roseo. 
Diam. 14, alt. 9 mill. 
Locality unknown. (Coll. Saul.) 
10. Hetrx rerirera, Pfr. Hel. testd umbilicatd, obtuse trochi- 
formi, striato-plicatuld, lineis nonnullis concentricis elevatis reti- 
culatd, carinatd, diaphand, pallide corned ; spird elevatd, obtusd ; 
anfractibus 64 planiusculis, ultimo basi subplanulato, striato ; 
umbilico mediocri, pervio; aperturd depressd, securiformi ; peri- 
stomate simplice, acuto, margine supero brevi, basali plane arcuato. 
Diam. 7, alt. 4 mill. 
Locality unknown. (Coll. Metcalf.) 
11. Burimus Grayanus, Pfr. Bul. testd gracili, turritd, soliduld, 
longitudinaliter subtilissime striatd et lineis impressis spiralibus 
subdecussatd, cinnamomed; spird turrita, apice valde attenu- 
atd; anfractibus 6 vix convexiusculis, ultimo % longitudinis sub- 
equante, antice defleco, soluto, dorso et basi carinato, lateribus 
scrobiculato ; aperturd angustd, oblongd, basi canaliculatd ; peri- 
stomate simplice, undique expanso, dentibus 7 marginem non attin- 
gentibus armato ; 3 in latere deatro, 4 in sinistro, summo tuber- 
culiformi, secundo valido, lamelliformi. 
Long. 35, diam. 11 mill. 
Locality, Brazils. 
Nearly allied to Bul. odontostoma, Sow., but quite distinct from 
the two varieties figured by Férussac. (Coll. Cuming.) 
