10 IOWA STUDIES IN NATURAL HISTORY 
larger series of examples. A female only was taken in an open 
weedy place. This specimen differs only from the Antigua 
specimens in having shorter and blunter humeri. 
More than fifty specimens are at hand from Antigua, taken 
mostly at Monk’s Hill, June 24; at Golden Grove, in a low lying, 
swampy, uncultivated field near a quarry, June 26; very common 
in a solanaceous weed patch near Falmouth, July 1 and 8. None 
are of the form inermis Dallas, the pronotal angles in all being 
drawn out into acute spines. I have a specimen of the latter 
form taken by H. A. Ballou on St. Lucia, and also specimens 
of typical ypsilon from Nevis and St. Lucia. Several half- 
grown nymphs taken at Antigua during July are also in our 
collection. 
Uhler records the species from Grenada. 
Solubea pugnax (Fabricius) 
Plate I, Fig. 6 
1775. Cimex pugnax Fabricius, Syst. Ent., 704. 
A large series of this species from Antigua only is at hand. 
It is one of the most abundant pentatomids on the island. Con- 
siderable difference in size between the sexes is apparent; the 
smallest male being but 9.0 mm. in length, the largest female 
11.5 mm. long. I can see no appreciable difference between a 
series of specimens from Antigua and a series made up of in- 
dividuals secured in different parts of the United States, except 
that the tropical series averages a little smaller, specimen for 
specimen. Dates and localities are as follows: 
Golden Grove, June 26; low, uncultivated area near quarry. 
Falmouth, July 1; abundant in grassy places cleared of brush 
and along edges of cultivated fields. 
Euschistus crenator (Fabricius) 
Plate I, Fig. 7 
1794. Cimex crenator Fabricius, Ent. Syst., Vol. Iv, 101. 
This common form, somewhat variable in depth of coloration 
and in acuteness of the humeri, was taken at both Barbados 
and Antigua. At Barbados it was found in some numbers in 
almost every place that collecting was done, particularly where 
