180 HEMIPTERA-HETEROPTERA. 
with very long fine projecting hairs in the male, 2-4 decreasing in length. Pronotum almost smooth, with 
the posterior lobe broadly and deeply sulcate down the middle anteriorly. Scutellum and post-scutellum 
each armed with a very long erect spine, the post-scutellar one preceded by a short spiniform prominence, 
Intermediate and hind legs very long and slender. Anterior femora armed beneath with a row of very 
short spines, with five longer spines intermixed, and with a row of six or seven spines in front, these latter 
becoming longer towards the apex of the femur. Anterior tibie with three long, curved spines on their 
basal half externally. 
Length 5-6, breadth Z-1 millim. (¢ @.) 
Hab. Panama, Bugaba (Champion). 
One male and three females. More slender than 7. inornata, with the femora and 
the base of the tibize black, and the antenne also black at the base, the posterior lobe 
of the pronotum more deeply sulcate. 
ONCEROTRACHELUS. 
Oncerotrachelus, Stal, Hemipt. Fabr. 1. p. 130, nota (1868) ; Enum. Hemipt. ii. p. 124, and iv. p. 91 
The chief characters of this genus are the strongly acuminate scutellum, the trans- 
versely globose basal portion of the head, the peculiar neuration of the elytra, and the 
unarmed anterior femora. ‘Two species only are known, one of these (0. conformis, 
Uhler, from the island of Grenada) having an erect tooth at the hind angles of 
the pronotum. 
1. Oncerotrachelus acuminatus. (Tab. X. figg. 8, 8a, 2.) 
Reduvius acuminatus, Say, Descr. of New Sp. of Heteropt. Hemipt. (New Harmony, 1831)’; 
Complete Writings, i. p. 356”. | 
Oncerotrachelus acuminatus, Stal, Enum. Hemipt. ii. p. 124°. 
Hab. Nort America, New Jersey 3, S, Carolina 3, Indiana ! 2,—Mexico, Tepetlapa in 
Guerrero, Teapa in Tabasco (H. H. Smith); Guarmemaua, Rio Naranjo, Paso Antonio, 
Guatemala city (Champion); Panama, Tolé (Champion). 
Not rare inGuatemala. Our specimens vary a good deal in size—from 43-64 millim. 
in length. An example from Paso Antonio is figured. 
Subfam. CHRY XINAL. 
The single genus referred to this subfamily cannot be included in any of the groups 
of Reduviide as tabulated by Stal. It differs from the Acanthaspidine in the absence 
of ocelli, from the Tribelocephaline in the very much less developed membrane, and 
from the Saicine in the short basal joint of the antenne. The presence or absence o 
ocelli must be regarded as of primary importance in the systematic arrangement of the 
Reduviids *. 
* Stal places the monotypic South-American genera Vescia and Belminus, which are without ocelli, amongst 
the Acanthaspidine, though in his Tables he uses the presence of ocelli as one of the principal characters of that 
subfamily ! 
