ANASA. 141 
masses around the stem near the earth, and injure the plant itself by extracting its sap 
with their piercers. They also give out an odour similar to that of an overripe pear.” 
On this point Prof. Verrill has found, with the assistance of Prof. Johnson, of Yale 
College, that the odour of this and other hemipterous insects bears the most resemblance 
to that of the formate of oxide of amyl, or the formate of amylic ether (Proc. Bost. Soc. 
Nat. Hist. xi. p. 160). The perfect insect hibernates during the winter, according to 
Jaeger, “in the crevices of houses, walls, and the bark of trees ;” and Prof. Uhler? relates 
it being found beneath rubbish on one of the farms in Colorado in the month of August. 
The last author states that “in the larval stage they are often guilty of cannibalism ; 
the stronger ones sucking the juices of the weaker, and leaving only their dried empty 
skins to attest their places upon the squash-vines.” 
2. Anasa uhleri. (Tab. XIII. fig. 23.) 
Anasa uhleri, Stal, Hem. Fabr. i. p. 57. 2; En. Hem. i. p. 190. 2°. 
Hab. Mexico 1. 
It is at least questionable whether this species is not included by Prof. Uhler as a 
variety of A. tristis. Stal describes A. whleri as having the posterior lateral margins of 
the pronotum obtuse, not sinuated; and, as already quoted, Prof. Uhler remarks upon 
this peculiarity in varietal forms of the other species. However, Prof. Uhler wrote 
subsequent to the publication of Stal’s description ; and as he is clearly quite conversant 
with the writings of that author, and does not treat A. whleri as a synonym of J. tristis, 
I have, though unable to examine a large series of specimens of the common North- 
American insect, treated the two forms here as distinct species. 
3. Anasa andresii. 
Coreus (Gonocerus) andresii, Guér. in Sagra’s Hist. de Cuba, Ins. p. 383, t. 18. £97. 
Anasa lugens, Stal, Stett. ent. Zeit. xxiii. p. 801. 173. 
Anasa andresii, Stal, En. Hem. i. p. 190. 3°; Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 293. 2 *. 
Hab. Norta America, Texas?4, Southern Florida+, New Mexico 4.—MExico 2 34 
Orizaba (Bilimek, Mus. Vind. Ces.); Guatumata, San Gerénimo, Capetillo, Zapote 
(Champion) ; Costa Rica (Van Patten), Irazu (Rogers); Panamal(coll. Dist.).—Cusa 154; 
CotomBia (Nothén, Mus. Vind. Ces.). 
This is not only a variable species in size, but also in the colour of the upper surface 
of the abdomen, which, as remarked by Stal, and strikingly exemplified by a large 
series of Guatemalan specimens, is sometimes testaceous and often black with two pale, 
somewhat obsolete discal spots. The apical joint of the antenne is either totally 
ochraceous, as in all the Guatemalan specimens examined, or, according to Stal, the apex 
only is of that colour. 
