32 IOWA STUDIES IN NATURAL HISTORY 
Family Acridide 
(The shorthorned grasshoppers) 
Genus Micronotus Hancock 
Micronotus quadriundulatus Redtenbacher 
Tettiz quadriundulatus Redt., Proc. Zool. Soc. Lond., p. 208, pl. xv1, fig. 
10 (1892). 
Micronotus qadriundulatus Kirby, Syn. Cat. Orth., vol. m1, p. 53 (1910). 
One dozen specimens of this tiny grouse locust were taken as 
follows: two males and one female on Antigua, one male on July 
12, the others in June, but without other data; two males, six 
adult and one immature female from Barbados, all on May 16, 
except one pair in June. 
This species was described from St. Vincent and has since been 
recorded from Haiti, Trinidad and Grenada. The dorsal un- 
dulations of the thorax are very distinct in some of the females 
and rather obscure in most males. 
Genus AMBLYTROPIDIA Stal 
Amblytropidia stoneri n. sp. 
Nine male and one female adults and an immature pair of a 
species of Amblytropidia collected on Antigua in June and July 
appear to be undescribed and are here dedicated to Prof. Dayton 
Stoner, the genial entomologist of the expedition and the collect- 
or of the specimens. It is a very distinct species running to 
australis in Bruner’s keys in Biol. Cent. Amer., Orth., vol. 0, p. 
62 (1904) and Proce. U. S. Nat. Mus., vol. xxx, p. 630 (1906). 
As a matter of fact it runs out in those keys to australis far bet- 
ter than does that species itself, to judge from a single female 
specimen of australis from Paraguay in the collection of the 
National Museum. In this female of australis, determined by 
Prof. Bruner, the median carina of the vertex is scarcely as 
prominent as in the United States species occidentalis; in the 
species here described this carina is decidedly more prominent 
than in either australis or occidentalts. 
The abbreviated organs of flight will serve for the easy dif- 
ferentiation of this species from allied forms. 
Description—Male: Head scarcely ascending, barely if at all elevated 
above the level of the pronotum; fastigium of the vertex beyond the 
narrowest point about twice as long as broad, apically, narrowly rounded 
