1 6 
MONOGRAPH OF THE GENUS STEOPHIA. 
64 STROP HI A nuniOLA Pfeiffer. 
Little Hummy Strophia. 
Plate IV, fig. 1, front, fig. 2, side view of typical specimen. 
Pupa mumiola Pfeiffer, Wiegm. Arch., 1331), I, p. 333, and Belie. 
Yiv. II. p. 848, 324. 
DESCRIPTION. 
Sp. Cii. Size small, shell, thick and heavy. StrBtions, present* 
Upper whirl with margin, about equal in length to all of the others 
put together. 
Form of shell, an obtusely pointed cylinder, with the first three 
whirls equal in diametei , from the last of these the shell slopes abruptly 
to an obtuse point, forming an angle of about sixty degrees. The 
striations are about twenty to the first whirl, are rather prominent, 
rather regular, a little inclined to the left, are rather wide, but not 
quite as wide as the interspaces between them. They are slightly furrow- 
ed, smoothly rounded and polished. The whirls are not bulging, and the 
suture between them is quite deep . 
Aperture, rather large and open, about as high as wide, and not 
contracted within. Lower tooth, not prominent, about .03 high, and 
about twice as long as high. It is about central in position, but is set 
far back in the mouth of the shell, at least twice and a half its length 
from the frontal bar; the upper tooth is about the same height and ex- 
tends around the column . 
The margin is not produced forward beyond the diameter of the 
shell, it is a little inclined backward, and a little to the right * beyond 
the side of the shell. It is a little thickened, measuring .03. It is 
rolled over, and somewhat reflexed outward, about .05, and the edge is 
sharpened. The frontal bar is quite well developed, and considerably 
inclined ; the striations do not appear within it. 
Color of shell, externally, rusty brown, marked with zigzag, longi- 
tudinal spots of white which are often broken into transverse lines. 
Internally, pale yellowish brown, becoming white on the margin. 
DIMENSIONS. 
Size of ty^pical specimen, .80 by .35. Largest, .30 by .36 ; smallest’ 
.75 by .32. Longest specimen, .80 ; shortest, .75. Largest diameter, 
.36; smallest, .32. 
OBSERVATIONS. 
There is a little variation in the thickness of the margin, some 
specimens measuring about .10, and in some the margin is consider- 
