TWO NEW SPECIES OF NEOTROPICAL ORTHOPTERA OF 

 THE FAMILY ACRID ID.E. 



By James A. G. Rehn, 

 Of the Academy of Natural Sciences of Philadelphia. 



The following new species of Acrididae were recognized in study- 

 ing a large amount of Neotropical material belonging to that family. 



Genus INUSIA Giglio-Tos. 



INUSIA ANTILLARUM, new species. 



Type.— Cat. No. 11061, U.S.N.M. Female; collected on St. Thomas 

 Island, West Indies, in December, 1882, by A. Koebele. 



Size medium; form slender, elongate; -surface uniformly punctate. 

 Head with its dorsal surface three-fourths the length of the pronotum, 

 occiput not ascending; interspace between the eyes extremely narrow, 



Fig. 1. — Inusia antillaiuwi. Lateral view of type. ( X 3.) 



slightly sulcate; fastigium sublanceolate, the caudal width slightly 

 less than the length, the apex blunt, the sides arcuate, dorsal surface 

 rugulose, with an irregular low median carina ; fastigium when seen 

 from the side rotundato-truncate, face strongly retreating, distinctly 

 concave; frontal costa narrow, subequal, shallowly sulcate and punc- 

 tate except at the apex; lateral facial earinse hardly diverging; eyes 

 ovoid, distinctly flattened ventro-caudad, considerably longer than 

 the infra-ocular sulcus, moderately prominent when viewed from the 

 dorsum. Pronotum with the greatest caudal width of the dorsum 

 slightly more than half the length: cephalic margin of the disk 

 arcuate, caudal margin rotundato-truncate, median carina ven r 

 low but distinct, transverse sulci three in number; metazona nearly 



Proceedings U.S. National Museum, Vol. XXXV-No. 1650. 



395 



