ZONITES. 199 



it from multidentatuS) which is still smaller than significant and 

 has a narrower umbilicus." BINNEY. 



H. HILLEI, Gundlach. PI. 60, figs. 29-31. 



Moderately umbilicated, depressed, thin, somewliat smooth, 

 whitish hyaline ; whorls 6, very narrow, suture deep, last whorl 

 obsoletely subangulated ; aperture with a more or less inter- 

 rupted spiral lamina on the base, and series of transverse irregu- 

 lar teeth. Diam. 4-5, alt. 2 '5 mill. 



Cuba. 

 H. BLANDII, Weinland. PL 60, figs. 32, 33. 



Narrowly perforate, with narrower whorls, and more elevated 

 than the last species. Diam. 4, alt. 3 mill. 



Haiti. 

 H. ENSIFERA, Mousson. PI. 60, fig. 34. 



Narrowly perforate, pellucid, horn-color, very shining; whorls 

 4J (?), somewhat flattened above, the last subangulate, more con- 

 vex below, narrowly impressed in the middle, suture scarcely 

 impressed, very narrowly margined ; aperture with two lamellae 

 within the outer wall, one submedian, the other smaller, basal, 

 or evanescent, columella plicately produced. Diam. 2 mill. 



Ins. Samoa. 



Section YENTRIDENS, Binney and Bland, 1869. 

 H. GULARIS, Say. PL 60, figs. 35-38. 



Subperforate, pale yellowish horn-color ; whorls t-8, narrow, 

 with curved close transverse wrinkles, suture impressed ; peris- 

 tome thin at the edge, thickened within with a white testaceous 

 deposit; base flattened, indented in the centre; yellowish white 

 and opaque near the aperture ; umbilicus small and rounded in 

 young shells, obsolete or diminished to a mere point in older 

 ones ; within the base of the aperture are one or two lamelliform, 

 elongated, nearly parallel teeth, one near the base, the other and 

 larger one exterior. Diam. 8 mill. 



Mts. of E. Tennessee, W. Virginia and Western Penna., 



Southwards to N. Georgia and Alabama. 



Is a larger species, with one more whorl, higher spire and less 

 convex base, than the next; the nucleus also is smaller, so that 

 the first two whorls are finer and more delicate. It is If. 

 bicostata, Pfr. 



