20 IOWA STUDIES IN NATURAL HISTORY 
Mantide 2 20 i 
Phasmide 2 27 
Acridide 7 149 
Tettigonide 3 34 
Gryllide 7 38 
31 334 
DERMAPTERA 
Family Forficulide 
(The earwigs) 
Genus ANISOLABIS Fieber 
Anisolabis minuta Caudell 
Anisobalis minuta Caud., Journ. N. Y. Ent. Soe., vol. Xv, p. 168 (1907). 
Borellia mimuta Burr. Proc. U. 8. Nat. Mus., vol. xxxvill, p. 448, 465 
(1910). 
Euborellia minuta Burr. Trans. Ent. Soe. Lond., p. 180, foot-note (1910). 
Euborellia minuta Rehn and Hebard, Bull. Amer. Mus. Nat. Hist., vol. 
XXXVII, p. 639 (1917). 
Two males and four females of this small earwig were taken; 
one male and two females on Antigua in June and one male and 
two females on Barbados in May. 
This species, together with the following one, as well as certain 
other allied forms, are by many recent writers placed in the 
genus Euborellia of Burr. This genus, however, as now character- 
ized, rests wholly on internal characters of the male. As such 
characters are deemed by the writer as wholly unsuited for 
generic differentiation, this genus is not accepted. 
Anisolabis ambigua Borelli 
Anisolabis ambigua Borelli, Boll. Mus. Torino, vol. xx1, No. 531, p. 3 
(1906). 
Borela ambigua Burr. Deutsch. Ent. Zeitschr., p. 325 (1909). 
Euborellia ambigua Burr, Trans. Ent. Soe. Lond., p. 180, pl. xLvI, fig. 7 
(1910). 
Euborellia ambigua Rehn and Hebard, Bull. Amer. Mus. Nat. Hist., vol. 
XXXVII, p. 638 (1917). 
Ten specimens of this species were taken, two males and eight 
females, all from Barbados in May, except one female from An- 
tigua in June. The male from Barbados is immature. 
This insect superficially very much resembles the former 
