198 HEMIPTERA-HETEROPTERA. 
Many of the Tropical-American forms described by Walker under the genus Reduvius, 
and some of his Pirates, belong here*. The various species are found under bark, 
one of them being a very widely distributed and common insect in Tropical America. 
The Central-American forms may be separated thus :— 
a. Posterior lobe of the pronotum transversely rugose ; head with the lateral 
post-ocular portions nearly twice as long as the eyes, the latter promi- 
nent; membrane with the nervures more or less bordered with ochreous : 
length over 18millm.. . 2... . oe . . . formicarius, Fabr. 
b. Posterior lobe of the pronotum smooth or faintly rugulose : length 
11-16 millim. 
a’. Head with the lateral post-ocular portions not longer than the eyes, the 
latter large and prominent ; membrane with the nervures more or less 
bordered with ochreous. . . litura, Fabr. 
6’. Head with the lateral post-ocular portions longer than the. eyes, the 
latter moderately large or small ; membrane with the nervures not 
bordered with ochreous. 
a’, Elytra with a rather large patch below the base, and the apex of the 
corium broadly, ochreous ; post-ocular portions of the head a little 
longer than the eyes . . . . . . venator, Stal. 
6”, Elytra with a small patch below the base, and the apex of the « corium 
broadly, ochreous; post-ocular portions of the head very much 
longer than the eyes . . . longiceps, N. sp. 
. Elytra with an interrupted patch below the base, and a patch on ‘the 
apical portion of the corium, not extending to the tip, ochreous ; 
post-ocular portions of the head a little longer than the eyes, the 
latter prominent . . . ... . woe ee ew ew ee) Unterruptus, D. sp. 
ad’. Elytra with the ochreous markings united and forming a common 
angulated fascia ; post-ocular portions of the head very much longer 
than the eyes, the latter not prominent. . . . . 2. . « fasciatus, n. sp. 
e’’. Elytra immaculate ; post-ocular portions of the head about twice as 
long as the eyes, the lattersmall . 2. 2. 2. 1. 1. . ee ee) otmmaculatus, n. sp. 
1. Leogorrus formicarius, (Tab. XII. figg. 11, 11 a, ¢; 114, anterior leg.) 
Reduvius formicarius, Fabr. Syst. Rhyug. p. 280 (1803)'. 
Platymeris formicaria, Burm. Handb. der Ent. ii. p. 233°; Herr.-Schaff. Wanz. Ins. viii. p. 33, 
t. 260. fig. 808°. 
Leogorrus formicarius, Stal, Hemipt. Fabr. i. p. 1254; Stett. ent. Zeit. 1862, p. 456°; Enum. 
Hemipt. ii. p. 118°. 
Acanthaspis formicaria, Walk. Cat. Hemipt. Heteropt. vii. p. 167’. 
* R. guttatus belongs to Homalocoris; R. tenebrosus to Spiniger ; R. decolor to Ectrichodia or an allied genus ; 
R. pallescens to Spheridops (=amenus, Lep.). FR. incommodus, from an unknown locality, is also a Leogorrus. 
