4 
Bulletin 35 
232 
Page gj 
is very interesting. Among the recent shells are several 
which are by no means common in the Westindies ; as for 
instance the true Persoria reticulai'is (Linn.) which though 
nearly allied to must not be confounded with the P. cla- 
thrata of Madagascar nor with the fossil P. similima of the 
\Ve.stindian miocene. Dlspacns glabratus oq.q.\ix% 2 l\. Cumana : 
and I have aLso from that place an undetermined species 
of Fiisiis (which resembles 3'oung shells of Fasciolaria 
gigantea except that it has a longer canal), and also the 
following : Solarium tesselatum, Phos guadelupeusis, Ve7i7ts 
fIex7tosa, Lalyptraea auriculaia, (of which apparent!}' there 
is a good figure in the large edition of Cuvier’s Regne 
Animal pi. 48, f. 4, under the name of C. aivieri 'Dtsh.) 
Oliva 7'eticularis (several forms), and O. 77io7iilifera Reeve 
(1=0. mntica 'V)3.y—7iitidula). 
VcTius stiperba n. .sp. PI. III. f 2. 
Ovate, .slightly subtrigonal, a little inequilateral, ven- 
tricose ; anteriorly produced and rounded ; posteriorly 
produced and subangulate ; umbones closely approximate ; 
lunule large, striated with irregular diverging lamellae, 
distinctly defined by a sharp groove : posterior dorsal 
area large, striate, not distinctly defined. Valves marked 
with numerous irregular angulate streaks of chesnut or 
brown and adorned with numerous concentric crenate ribs, 
which are rather more distant, thinner, and more distinctly 
crenate near the anterior and posterior margins : on the 
disk the ribs are square, flattened and polished, and the 
crenation is less marked. Length 70, height 55, thickness 
about 45 mm. 
Mactra a7iseri7ia n. sp. PI. III. f i. 
Oval, compressed, subequilateral, gaping widely pos- 
teriorly, anteriorly somewhat produced and subangular, 
