262 OETHOPTEEA. 



COENOPS, Scudder. 



Cornops, Scudder, Proc. Bost. Soc. Nat. Hist. xvii. p. 276 (1875) ; Entom. Notes, no. 4, p. 30 

 (1875) ; Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xiii. no. 311, p. 45 (1898). 



The genus Cornops is represented in " Biologia " territory by at least one species. 

 Like the members of several other genera belonging to the same region, these locusts 

 are confined in their distribution to swampy or low wet ground at the margins of 

 ponds, lakes, and streams, where they live among aquatic and semiaquatic vegetation. 



Synopsis of the Species of Cornops. 



A 1 . General colour above in ? greenish-testaceous, in the <$ grass-green ; the 

 sides of thorax above, along with the costal margin and discal field of the 

 tegmina, black or rather strongly infuscated. [Island of Trinidad.] . [1. insularis, sp. n.] 



A 2 . General colour above grass-green, the sides of the thorax and the costal 

 and discal areas of the tegmina brownish or ferruginous — much darker 

 in the $ . [Central America and Mexico.] 2. scudderi, sp. n. 



[l. Cornops insularis, sp. n. 



? Cornops bivittaturn, Bruner, Journ. N. York Ent. Soc. xiv. p. 154 (1906) \ 



Very similar to, but larger than, Cornops bivittatum, Scudd., and differing from that insect in lacking the 

 black border to the labrum and the infuseation of the genicular portion of the hind femora. The antennas 

 of the § of the present species are ferruginous, instead of fuscous as in C. bivittatum, while in the 6 

 they are nearly black. General colour above ( $ ) greenish-testaceous on occiput of head and disc of 

 pronotum, on tegmina inclining to ferruginous, ( d 1 ) grass-green ; sides of head back of eyes, on the 

 upper half of pronotum and the meso- and metathorax, and the costal and discal areas of the tegmina in 

 the <S black, in the $ the band on sides of head and thorax only narrowly black-lined, the costal and 

 discal areas of the tegmina ferruginous. Hind femora flavous tinged with green, the knees more or less 

 strongly washed with ferruginous and slightly marked with piceous ; the tibiae greenish, infuscated 

 apically, most strongly so in the tf . 



Length of body, 3 18-5, $ 29 ; of pronotum, S 3'5, $ 5-6 ; of tegmina, 6 17, $ 25 ; of hind femora. 

 S 10-5, $ 15 millim. 



Bab. Island of Trinidad (H. I). Chipman, in coll. L. Bruner). 



This is the insect that was doubtfully placed by the present writer 1 under 

 C. bivittatum, Scudder.] 



2. Cornops SCudderi, Bruner. 

 Cornops scudderi, Bruner, Ohio Naturalist, vii. pp. 12, 13 (1906) \ 



Since publishing the description of the <S insect a specimen of the $ has been received. It is much more 

 uniformly green than the d , being but slightly marked along the sides of the head and the thorax by 

 the dusky band, and is also rather robust in body, with comparatively short wings, that extend but 

 little beyond the tips of the hind femora. Its measurements are as follows :— Length of body 26, 

 of pronotum 5-5, of tegmina 22, of hind femora 16 millim. 



Eab, Mexico, Tampico in Tamaulipas {coll. III. State Lab. Nat. Hist.) ; Guatemala, 

 Puerto Barrios. 



A pair of this species was taken at Tampico in the month of December. 



