202 IOWA STUDIES IN NATURAL HISTORY 
Dall, which suggests in miniature a Chinese pagoda. But two 
species of this peculiar genus are recorded, both Antillean, but 
we have what seems to be a third, also a Chinese pagoda, but 
shorn of the many ornamentations of Dr. Dall’s remarkable 
shell, perhaps reflecting architecturally the greater simplicity 
of an older dynasty. 
In Antigua we made a fairly systematic attack upon the land- 
shells, but the island is no conchologist’s paradise. Like all the 
other islands of the Lesser Antilles, it possesses a very poor 
molluscan fauna, only ‘‘a little more so.’ Here none of the 
South American species so commonly met in Barbados is to be 
found The only pleurodonte (of the characteristic Antillean 
group of Caprinus) is P. formosa Fer. This we finally found 
after considerable search on Monk’s Hill, estivating upon the 
upper branches of a smooth-bark tree. As it’s name suggests, 
it is a very pretty species, having a curiously patterned shell 
of white oblique streaks upon a gold and chestnut background. 
It did not seem to be abundant in any locality. We also took 
from several stations the single opereulate of the island.—Cis- 
tula antiguensis Sh. The chief mollusean feature of the island 
is probably the development of the two Bulimulids,—Drymeus 
elongatus Bolt. and Bulimulus exilis Gmel. Both are pretty 
generally distributed throughout the lower islands of the An- 
tilles, although the former does not reach Barbados. Antigua 
seems to offer an excellent station for these two and they are 
ever present wherever there are trees or bushes for them to 
cling to. The color patterns are numerous and show an end- 
less hybridism that might yield some interesting results to a 
systematic study. The commonest form of D. elongatus that 
we met is almost pure white with faint traces of color banding, 
and with or without chestnut color patches about the columellar 
region. A very striking form from the northern side of the 
island is white with a series of wide broken bands of purplish 
chestnut. 
The ubiquitous Subulina octona Chem. of almost world-wide 
distribution was, as usual, the first of the species to turn up 
when we started collecting. Enthusiastic conchologists have be- 
come so discouraged and disillusioned when finding this terrible 
species at every port of call that rewards have been offered for 
