BUCCINIDA. elt 
Shell bueciniform, short, robust, thick; spire low; aperture 
large, notched anteriorly ; outer lip simple; inner lip incrusted 
with a smooth callus; surface longitudinally ribbed or striate. 
Allied probably to Cominella or Volutharpa. 
Lacrnia, Conrad. 
Distr.—L. alveata, Conr. = Pyrula Smithii, Lea (li, 71). 
Eocene; Ala. 
Globose; pillar lip widely reflected, with a heavy posterior 
callus; basal emargination profound; base dilated; aperture with 
a posterior channel ; outer lip simple. 
This does not differ very much from the recent Cominella 
maculata, Martyn. 
HAyYpDENIA, Gabb. 
Dedicated to Dr. F. V. Hayden, U. 8. Geologist. 
Distr.—H. impressa, Gabb (li, 72). Cretaceous ; California. 
Shell massive, allied, in general form, to Oliva, spire low. 
Outer lip simple, not thickened nor crenulate ; inner lip incrusted, 
callus marked posteriorly, without teeth or folds; canal slightly 
recurved ; anterior extremity of the mouth notched, and a small 
sinus at the posterior extremity of the aperture, where the outer 
lip unites with the body-whorl. Surface ornamented as in some 
of the Buccinidz. This curious form is probably a link between 
Buccinum and Volutharpa. 
SuspraMity HBURNINE. 
Espurna, Lam. 
Etym.—Ebur, ivory. 
Syn.—Latrunculus, Gray. Babylonia, Schlut. 
Distr.—l4 sp. Red Sea, India, Cape, Japan, China, Australia. 
EF. spirata, Lam. (1, 38, 39). 
Shell ovate-oblong, thick, porcellanous, under a thin epidermis; 
deeply umbilicated ; spire acuminated, whorls more or less convex, 
suture more or less channeled; aperture oval; columella arcuated, 
posteriorly callous; inner lip spreading, often covering the umbil- 
icus in the adult; outer lip simple, acute. Operculum with apical 
nucleus. 
The Eburne comprise a small, very well defined group of about 
a dozen species, the generic character being unmistakable in all 
of them. The whorls have more or less shoulder; those of Z. 
Zeylandica, showing the least, being a mere slight flattening of 
the contour next below the sutures, whilst in £. spirata there is 
a regular channel out of which arises the preceding whorl. The 
species are all largely umbilicate, but in some of them the umbil- 
icus is covered or filled, more or less completely, by the callous 
inner lip; the umbilical region is defined by a strong rib. A thin, 
