NABIS.—CARTHASIS. 305 
6. Nabis ferus. 
Cimex ferus, Linn. Syst. Nat. ed. 10, i. p. 449; Fauna Suecica, p. 256’. 
Nabis ferus, Fieb. Europ. Hemipt. p. 161°; Reuter, Ofv. Vet.-Ak. Férh. 1872, no. 6, p. 90°. 
Coriscus ferus, Stal, Enum. Hemipt. iii. p. 118+; Uhler, Bull. U.S. Geol. & Geogr. Surv. i. 
p- 325°; Proc. Calif. Acad. Sci. (2) iv. p. 282°. 
Nabis punctatus, Costa, Cimicum Regni Neap. ii. p. 14 (1848) **. 
Hab. Norta America?4, generally distributed throughout the United States>§, 
Lower California °—Mexico (Sallé, in Mus. Holm.), Ciudad in Durango (Yorrer), 
Omilteme in Guerrero (H. H. Smith), Orizaba (H. H. Smith, Godman); GuatTEMALA, 
Quezaltenango (Champion).—Eurors !~47, 
We possess twelve examples of this species from within our limits, these belonging 
to the var. punctatus, Costa. In this form the clavus and corium are minutely dotted 
with fuscous. JV. punctipes, Reut.t (?=. roseipennis, Reut.), from Wisconsin (the 
types of which I have seen), is very like the Mexican and Guatemalan specimens, but 
it has the legs and elytra more thickly speckled with fuscous. 
CARTHASIS, n. gen. 
Head with the ante-ocular portion cylindrical and longer than the post-ocular portion, transversely grooved 
between the eyes, without ocelli, the eyes rounded, prominent, and coarsely faceted ; rostrum reaching 
nearly as far as the base of the pronotum, 4-jointed, joints 2-4 slender, 2 as long as 3 and 4 united ; 
antenne inserted at the apex of the short oblique cylindrical antenniferous tubercles, 4-jointed, elongate, 
slender, joints 1 and 2 stouter than the others, 1 and 2 subequal in length, 3 a little shorter than 2, 4 one- 
half longer than 3. Pronotum longer than broad, strongly constricted about the middle ; the posterior lobe 
transversely convex; the anterior lobe longer and narrower than posterior one, with the inferior lateral 
portions obliquely widening forwards to the points of insertion of the anterior legs, and shallowly 
transversely grooved in front. Scutellum triangular, moderately large. Elytra extending to the apex 
of the abdomen and almost covering it, constricted below the base, with a narrow clavus, the corium 
reaching to a little beyond the middle of the membrane and with a sinuous median nervure, the membrane 
without distinct nervures. Abdomen (@) ovate, with a very narrow connexivum. Legs slender, the 
anterior pair raptorial and inserted near the apex of the propleura; anterior coxe elongate, about half 
the length of the tibie ; anterior femora feebly incrassate, denticulate beneath ; all the tibie with a spongy 
lobe at the apex, extending to about the middle of the very slender tarsi, which are formed of one joint 
only ; claws simple; anterior tibize denticulate within. Body narrow, slender. 
This genus is allied to Vadis, but differs from it in the form of the pronotum, the 
absence of ocelli, the relatively longer anterior coxe, the structure of the tarsi, &c. 
In the long anterior coxe and the position of the anterior legs it approaches the 
subfamilies Emesine and Bactrodine of the Reduviide. ‘The tarsi are uni-articulate, 
and at the apex of each of the tibie there is a spongy lobe. 
* For the rest of the synonymy see Lethierry and Severin’s Catalogue. | 
+ N. punctipes is not mentioned by Reuter in his later work, nor included in Lethierry and Severin’s 
Catalogue. 
BIOL. CENTR.-AMER., Rhynch., Vol. II., March 1900. 39 
