26 
MONOGRAPH OF THE GENUS STROPHIA. 
I found these specimens in the collection labeled “ Strophia mi- 
crostoma ? Cuba.” 
This species is clearly described by Pfeiffer in the work cited at 
the head of this article, and his figures on plate 3 are excellent. The 
following is his original description. 
“T. profunde rimata, subcylindrica, solidula, confertim leviter cos- 
tata, albida, strigis fusco-corneis irregularites signata ; spira elongata, 
sensim in conum obtuscilum ; sutura impressa ; anfr. 10 vix convex- 
iuscula, ultimus 1-3 longitudinis non aequans antice leviter ascendens 
basi sub-compressus, aequte striatus ; apertura lunato-rotundata, in- 
tus pallid e livida, dente parietuli compresso, intrante et plica colum- 
ellari obsoleta munita ; perist. simplex, breviter expansum, marginibus 
callo tenui junctis, columellari dilatato, paltente,-— long. 21- — 22 ; diam. 
7 mill. ap. c. perist. 7 mill, longa, 6 lata.” 
The above may be translated as follows ; 
Shell, deeply rimate, sub-cylindrical, solid, closely and lightly 
ribbed, white externally, marked with irregular lines of fuscous ; spire 
elongated, with the cone a little obtuse. Suture impressed. Whirls 
10 scarcely convex, the last, one third longer than the others, front, a 
little ascending, base, partly compressed. Aperture, lunately rounded, 
pale livid within, parietal tooth compressed within, and the fold ( tooth ) 
on the columella obsolete. Peristome (margin) simple, short, ex- 
panded. Margins joined by a slender bar. Columella dilated, open. 
Length, 21-22, diameter, 7 mill. Aperture, 7 mill long, 7 wide. 
69 STROPHIA RUDSS Pfeiffer 
Red Strophia. 
Plate VI fig. 5, front, fig. 6, side view of typical specimen. 
Puparudis Pfeiffer, Malak. Blat. , 1855 ; page 102 ; Plate V, fig.l 
and 2. 
DESCRIPTION. 
Sp. Ch. Size medium. Shell, thick and heavy. Striations, pres- 
ent. Whirls 10, the upper of which including margin is about as wide 
as the five following. Examined 6 specimens. Form of shell an obtuse- 
ly pointed cylinder, with the first, second, and third whirls about equal 
in diameter. The fourth, is but little smaller and from this, the shell 
slopes to an obtuse point, forming an angle of about 65 degrees. The 
striations are numerous about thirty-eight to the first whirl ; they are 
narrow, about as wide as the interspaces between them straight or slight- 
ly bowed to the left and a greater portion of them are arranged in lines- 
The whirls are not at all bulging and the suture between them is shal- 
low. 
