MONOGRAPH OF THE GENUS STROPHIA. 
13 
DIMENSIONS. 
Size of typical specimen .90 by .42. Largest specimen, 1.21 by 
50 ; smallest, .90 by .40. Longest, 1.21; shortest, .80. Greatest diam - 
eter, .50; shortest, .40. 
OBSERVATIONS. 
There is little varation among the specimens examined other than 
is due to age or to mere varieties in markings. There is, however, one 
well marked form as given below. Form No. 1, larger, measuring 1.15 
by .50. The form is a little more cylinderical than the type, the first 
three whirls being equal in diameter, the color is similar, but the tooth 
is larger, being: at least three times its height in length, and is also in 
dined to be double. There are about ten per cent of this form. 
There can be no question but what this is the shell which Pfeiffer 
had in hand when he described his Pupa marmorata in his works cited 
at the head of this article, as color, form, size, etc indicate. Below, 
I give the original description and a translation. 
“ T. rimata-pefrorata, subcylindraco-ovata, solida, striatula 
nitidi, nivea, fiammis longitudinalibus castaneis, diaphanis ornata, 
spira sursum attenuata, apice obtusa ; anf. 10 subplanulata, ultimus 
autice plicatus ; columnella obsolete et profunde unidentata plica par- 
ietis aperturalis mediocris, profunda ; apertura semiovalis, intus livido- 
fusca ; perist, incrassatum, reflexum, marginibus superne converge n- 
tibus — Long, 24, diam. vix 10 mills, ap. 9 mill, longa, 8 lata (Coll. 
Philipp. ) . 
Obs. Differt a praecedenta colore, apertura lateore, dente parietis 
aperturalis obsoletiore, dente columellari minimo, etc.” 
Shell rimate and perforated, sub-cylindrical ovate, solid, striated 
shining white, ornamented with longitudinal, transparent, flames of 
chestnut, which are alternate on the spire. Spire obtuse ; whirls, ten, 
sub-even. The last plicated in front ; column obscurely and deeply 
one-toothed, pariatal fold of the aperture, deep. Aperture, semioval 
livid fuscous within. Peristome, not thickened, reflexed. Margin, 
partly converging. Length, 24 mill, diameter, 10 mill. Aperture 9 
mill, long 8, wide. ( Collection of Phillip. ) . 
Observation ; differs from the preceeding, in the color, width of ap- 
erture, smaller tooth in aperture, and smaller tooth on the column etc. 
The species referred to by Pfeiffer as “ the preceeding,” is his 
Pupa sagraiana. In this connection see remarks under S. obscura. 
I found these shells in the collection labeled “ Pupa marmorata 
Pfr., Cabo Cruz, Cuba. Cisneras, collector.” 
