55 
pheria obsolete angulato, basi angustiore ; umbilico lato, 5 diametri 
subequante ; apertura obliqua, subtriangulari-lunart ; perist. sim- 
plice, recto, marginibus vix convergentibus, supero substricto, an- 
trorsum dilatato, basali arcuato. 
Diam. maj. 43, min. 34, alt. vix 13 mill. 
Hab. Santa Ana, New Granada. 
30. Hetrx memBranicosta. UH. testa mediocriter umbilicata, 
trochiformi, tenui, costulis radiantibus membranaceis, presertim 
facie inferiore munita, parum nitida, fusco-cornea ; spira conica, 
acutiuscula ; anfract. 7, convewiusculis, lente accrescentibus, ul- 
timo non descendente, peripheria carinato, subtus conveviore ; 
apertura obliqua, subtetragono-lunari ; perist. simplice, recto, 
marginibus remotis, columellari superne dilatato, patente. 
Diam. maj. 11, min. 10, alt. 7 mill. 
Hab. Salomon’s Islands. 
31. Hexix Navicatorum. H. testa mediocriter umbilicata, len- 
tiformi, solidula, oblique striata, sub epidermide nitida, purpu- 
rascenti-fusca rubello-grisea ; spira convexa, obtusa ; sutura mar- 
ginata ; anfract. 5, convexiusculis, sensim accrescentibus, ultimo 
non descendente, supra medium compresse carinato, basi con- 
veviore; apertura diagonali, lunato-rotundata, subangulata ; perist. 
recto, obtuso, marginibus subconvergentibus, supero antrorsum 
subdilatato, basali arcuato, prope umbilicum viz dilatato, patente. 
Diam. maj. 183, min. 16, alt. 75 mill. 
Hab. Navigators’ Islands. 
32. Hextrx semiconvexa. H. testa umbilicata, depressa, tenui- 
uscula, minute striata, castanea, sericea; spira vix elevata, medio 
pallida, vertice subtili, obtuso ; sutura impressa, distincte mar- 
ginata ; anfract. 43, conveviusculis, sensim accrescentibus, ultimo 
non descendente, peripheria compresse carinato, basi influto, um- 
bilico mediocri, conico ; apertura obliqua, securiformi, intus ceru- 
lescente ; perist. simplice, recto, marginibus vix convergentibus, 
basali perarcuato, ad umbilicum subdilatato, patente. 
Diam. maj. 14, min. 113, alt. 6} mill. 
Hab. Salomon’s Islands. 
33. Hexrx Prrrieana. H. testa perforata, globoso-conica, tenui, 
levigata (sub lente vix striatula), pellucida, cornea; spira con- 
vexo-conica, acutiuscula; sutura impressa, marginata ; anfract. 
7-8, convexiusculis, angustissimis, ultimo carinato, non descen- 
dente, basi convexo, intus ter bidenticulato; denticulis subequali- 
bus, extus pellucentibus; apertura vix obliqua, depressa, angulato- 
lunari, denticulorum pari antico coarctata; perist. simplice, recto, 
margine columellari ad perforationem apertam dilatato, reflexo. 
Diam. maj. 5, min. 43, alt. 4 mill. 
Pirie Walaghat, Koondah Mountains, near Calicut, India (Mr. 
irrie). 
34. Herrx rapiaria. H. testa subobtecte perforata, trochiformi, 
tenuiuscula, striatula, parum nitente, diaphana, luteo-albida, su- 
