218 HEMIPTERA-HETEROPTERA. 
GONIANOTUS. 
Gonianotus, Fieber, Eur. Hem. pp. 51 & 196 (1861) ; Stal, Ofv. Vet.-Ak. Férh. 29: 7, p. 59 (1872). 
Gonianotus has been differentiated from Emblethis, an allied European genus found 
- in America, and both of which belong to Stal’s division Ganianotaria (ante, pp. 212 & 
213), in the following manner by St&l:—“‘Spatio inter antennas et oculos longiore, 
antrorsum haud angustato; tuberculis antenniferis latioribus, apice late truncatis, 
angulo apicali ultra locum insertionis antennarum prominulo.” 
Dr. Puton has enumerated two European species of this genus, one of which is also 
recorded in North America, and has been received by us from Guatemala. 
1. Gonianotus marginepunctatus. . 
Lygeus marginepunctatus, Wolff, Ic. Cim. 150, t. 15. fig. 144°. 
Lygeus pilifrons, Zett. Act. Holm. 1819, 71; Fall. Hem. Suec. 52. 8. 
Pachymerus marginepunctatus, Schill. Beitr. i. 71. 11, t. 6. fig. 8; Hahn, Wanz. Ins. i. p. 52, t. 8. 
fig. 82; H.-S. Nom. Ent. i. pp. 45 & 79. 
Rhyparochromus marginepunctatus, Dall. List Hem. ii. p. 563. n. 10°. 
Gonianotus marginepunctatus, Fieb. Eur. Hem. p. 197.1; Uhler, Proc. Bost. Soc. Nat, Hist. xix. 
p. 892°; Dist. Scient. Res. Sec. Yarkand Miss., Rynch. p. 9. n. 28 (1879) *. 
Hab. Norra America, Massachusetts *.—GuatemaLa, Ostuncalco, 7500 feet (Cham- 
pion).—Evrore }?; Maprrra?; Arrica?, Algeria (Lucas). Asta, Yarkand 4. 
Mr. Uhler ? remarks on this species, as found in North America, that it “is probably 
an importation from Europe, as it offers no difference from specimens which I have 
examined from Germany. Several of the varieties found in Europe are also to be met 
with in this country.” In two specimens, received from Guatemala, I can detect neither 
specific difference nor special variation. 
EREMOCORIS. 
Eremocoris, Fieber, Eur. Hem. pp. 49 & 187 (1851); Stal, Ofv. Vet-Ak. Férh. 29: 7, p.60 (1872) ; 
En. Hem. iv. p. 163 (1874). 
The body is opaque; the first joint of the antenne passes the apex of the head by 
more than its apical half; the posterior lobe of the pronotum is distinctly anteriorly 
depressed, and is likewise shorter than the anterior lobe. ‘These are some of the 
principal characteristics of this genus, whose area is a very wide one. Dr. Puton 
enumerates four European species; one and, at present, one only is known in the 
Nearctic Region, whilst we have received the following undescribed species from 
Guatemala. . 
1. Eremocoris tropicus, n. sp. (Tab. XX. fig. 7.) 
Head piceous ; antenne piceous, the base of the first joint luteous; second, third, and fourth joints subequal in 
length. Pronotum castaneous, with the lateral margins, excepting base, ochraceous ; the anterior lobe 
