LYMN#ZID2Z OF NORTH AMERICA. 355 
REMARKS: Galba attenuata resembles certain forms of reflexa, 
particularly reflexa walkeri. Its flat-sided, turreted whorls, elongated 
spire, heavy columellar plait and particularly the absence of the convex 
swollen penultimate whorl will distinguish it from reflera. The body 
whorl is also more convex than in either reflexa or exilis. Galba exilis 
has more flat-sided whorls and a longer and narrower aperture. The 
aperture varies somewhat in some individuals being rather narrow 
while in others it is wider or even expanded and flaring. The flat- 
ness of the whorls varies also, in some individuals they are almost 
as flat as in evilis while in others they are almost as rounded as in 
typical reflexa. The whorls of attenuata are, however, always pe- 
culiarly flattened in the middle and rounded toward the sutures above, 
besides being more regular in their increase than in reflexa or evilis. 
Strebel figures several specimens which resemble some examples of 
Galba elodes joltetensts. 
Say’s types of attenuata are preserved in the Academy of Natural 
Sciences of Philadelphia. One specimen has seven whorls, which are 
flat-sided. Subulata Dunker is undoubtedly a synonym the spire whorls 
being wide and more flat-sided than typical attenuata. Me-xicanus 
Ziegler is also a synonym. Haldeman’s figures are excellent and cor- 
rectly represent the species. 
Galba danielsi (Baker). Plate XX XVIII, figures 1-8. 
Limnophysa reflexa BuatcH. and AsuHtiey, Ind. Geol. & Nat. Res., XXV, 
p. 248, 1901. 
Lymnea danielsi BaKer, Nautilus, XX, p. 55, September, 1906. 
SHELL: Elongated, attenuated, of medium thickness ; periostracum 
ranging from very light-yellowish horn to dark chestnut or purple; 
surface shining, growth lines generally fine and close-set, but oc- 
casionally, as near the aperture, coarse and often raised into ridges; 
last whorl often malleated; spiral sculpture of fine impressed lines; 
nuclear whorls resembling those of reflexa in outline, spermaceti-white 
in color; whorls 7, flat-sided or slightly convex, slowly increasing in 
diameter ; the body whorl is very large and much inflated; spire long 
and sharply attenuated, longer than the aperture; sutures impressed; 
aperture ovate or semi-lunate, often a little triangular, rounded below, 
acutely angled above, somewhat flaring; peristome sharp, simple, 
bordered by a dark purple or chocolate band in many specimens; 
parietal wall with a thin callus; inner lip narrow but wider than in 
reflexa, reflexed, generally closely appressed to the shell and almost 
closing the umbilical region, leaving a small chink; axis strongly 
twisted, almost gyrate, forming a heavy ascending plait; interior of 
aperture varying from white to dark purple. 
