106 . HEMIPTERA-HETEROPTERA. 
The single small species from which the above-mentioned characters are taken has 
the facies of a Brachyrrhynchus, but differs from that genus in the position of the 
spiracles (the insect in this respect approaching the genus Nannium, Bergr.), as well 
as in having a prominent longitudinal ridge on each side of the anterior part of the 
pronotum. 
1. Coloborrhynchus pumilio, n. sp. (Tab. VII. fige. 11, 3; lla, antenna.) 
3d. Oblong-ovate, flattened above, ferruginous, the basal half of the pronotum, the scutellum, and corium 
fusco-ferruginous ; the membrane nigro-fuscous, obscure luteous round the apex of the corium; the 
upper surface finely granulate, the connexivum almost smooth, and clothed with a few extremely short 
microscopic hairs. Head with a very short spine on each side behind the eyes; the apical process 
reaching to considerably beyond the middle of the first antennal joint; the spiniform antenniferous 
processes moderately long, acute; antenne rather short, moderately stout, with a stouter basal joint, 
joints 1 and 3 equal in length, 2 short, not so long as 4, 4 oblong-ovate, pilose at the tip. Pronotum 
feebly sinuate at the sides, the margins finely crenulate; the anterior portion rounded at the sides 
anteriorly, and with a prominent longitudinal curved ridge on each side on the outer part of the disc, the 
two inner callosities flat and without trace of ridges. Scutellum transversely wrinkled, and with a distinct 
median ridge. Connexivum broad, rounded at the sides posteriorly. Terminal genital segment cordate ; 
the lobes of the first genital segment short and stout. Beneath dull and rugulose, the ventral segments 
each with a small smooth spot in the middle, the connexivum partly coated with a pallid incrustation. 
Length 4, breadth 14 millim. 
Hab. Panama, Bugaba (Champion). 
One example. 
NEUROCTENUS. 
Neuroctenus, Fieber, Europ. Hemipt. p. 34 (1861); Stal, Enum. Hemipt. iii. pp. 140, 145; 
Bergroth, Ofv. Finska Vet.-Soc. Férh. xxix. p. 174 (1887). 
Of the twenty-eight described species of this widely distributed genus, one-half are 
American, ten occurring within our limits, whence four others are now added. 
Two inhabit the United States and four are recorded from South America, two of the 
latter extending into our region. The genus was monographed by Dr. Bergroth in 
1887, and since then ten other species have been added. ‘These insects are very like 
Brachyrrhynchus, differing chiefly in the carinate anterior margins of the ventral 
segments 3-5, the acute apex of the corium, and the flattened pronotum. ‘The median 
portion of the apical margin of the fifth ventral segment is bisinuate in the females, 
and truncate inthe males. In the females of WV. whleri, &c., the terminal genital segment 
is notched or bilobed at the tip, and the lobiform lateral portions of the preceding 
segment also vary a little in form according to the species. 
a. Body subtriangular (¢), ovate (?); apical process of the head sub- 
conical ; pronotum sinuate at the sides. 
a’. Antenne with joint 1 much longer than the apical process of the 
head, 4 shorter than 3; sixth connexival segment (¢) with an 
oblique fold. 2. 1 1 we ee eee ee ew ew ww Fergrothi, D. Sp. 
