MONOGRAPH OF THE GENUS STROPIIIA. 
17 
ably inclined to the right. The markings of this shell recall those of 
Strophia mumia, in fact the general form is similar, but the margin is 
proportionately less flanging and thicker. The resemblance is, however, 
sufficient to suggest the name of P. mumiola , which Pfeiffer applied to 
it and beyond all doubt, it is the species which he had in hand when he 
described his Pupa mumiola, as will be seen by his description given 
below. 
T. breviter et profunde rimata, oblongo-ovata, solidula, corneo et 
albido subtiliter mannorata, remote costata; costis subrectis, validis, 
interstitiis costas multo superantibus ; spira sub-cylindrica, apice su- 
bito in conum obtusiusculum attenuata ; anfr. 9 convexiusculi, ultimus 
1-3 longitudinis subaequans, anticeascendens ; apertura lata, subluna- 
ris, dentibus 2 profundis, altero intrante in ventre anfractus penultimi 
altero minuto supernead columellam coarctata ; perist. subincrassatum, 
undique expansum, xnarginibus callo tenui junctis. Long .20, diam. 9 
mill. Ap. oblique 9 mill, longa, 8 lata. (Coll. Nr. 37.) Habitat in 
insula Cuba. 
Translated the above reads as follows. Shell, short and deeply ri- 
mate, oblong ovate, solid, horny and white, finely marbled, striations 
wide apart and partly straight, the interspaces wider than the striations 
spire sub-cylindrical. Tip, partly cone-shaped and obtusely pointed ; 
whirls 9, convex, the last one-third the length of the whole, front, as- 
cending ; aperture, on one side, sub-lunate, teeth two, deep. One in the 
interior of the belly of the front whirl, the other small and high on the 
column. Peristome, sub-thickened, somewhat expanded. Margins, con- 
nected by a narrow bar. Length, 20 mill, width 8 mill. Habitat, Cuba. 
I found these specimens in the collection labeled “Pupa chrysalis, 
Cuba.” 
SUB-GENUS 8. SENICULUS. 
Lower tooth central, not greatly elongated. Striations, 
ALWAYS PRESENT, AND IRREGULAR IN FORM. SHELL, MARKED WITH IR- 
REGULAR, TRANSVERSE LINES OF MIXED WHITE AND REDDISH. MOUTH, 
widely open, with margin flanging. Type Strophia mumia, Brung. 
This singular group of Strophias, which appears to be perfectly 
distinct, is characterized by the widely flanging margin, which in the 
type reaches the maximum development of all Strophias, rather short, 
low central tooth, which does not exceed three times its height in 
length, ( see plate Y for a section of S. mumia ) and rough, irregular 
striations, combined with the mixed white and reddish colors, that ap- 
pear in narrow, broken horizontal lines. The septa between the whirls 
