OPHIOPTEEUS.— HETEKOPELMA. 297 



4. Ophiopterus striatifrons. 



Niger ; ore, orbitis late, tegulis, coxis anterioribus, abdominisque basi, flavia, pedibus rufis ; alis brevibus, 



hyalinis, nervis nigris. $ et <$ . 

 Long. 9-10 millim. 



Eab. Mexico, Ciudad in Durango (Forrer). 



Antennae about half the length of the abdomen, microscopically pilose ; fuscous towards 

 the base of the flagellum, the basal joint of the scape yellow on the underside. Head 

 black ; the mouth, the mandibles, the palpi, the orbits (broadly on the inner, narrowly 

 on the outer, side), and the face (except a triangular black mark), yellow ; face and 

 vertex finely punctured ; the front transversely, and the head behind at the sides lon- 

 gitudinally and strongly, striated ; an indistinct keel runs down from the ocelli, and 

 another from each antenna down the face. Thorax black ; a broad line on each side of 

 the mesonotum in front close to the pronotum, the tegulae, and the scutellum in the centre, 

 yellow ; mesonotum strongly transversely striated in front, punctured in the middle, 

 aciculated behind ; prothorax obliquely striated at the sides, except in the middle, 

 which is shining and impunctate ; pronotum roughly transversely striated ; mesopleura 

 (except below the wings) and sternum rugose ; scutellum punctured, the lateral keels 

 stout ; metathorax coarsely reticulated. Abdomen twice the length of the head and 

 thorax united ; the greater part of the basal half yellow, segments 4 and 5 rufous. 

 Legs reddish ; the four anterior coxae and trochanters yellow ; the hind coxae and 

 trochanters black, yellow at their junction ; the base of the hind femora and the 

 apices of the tibiae and tarsi black. In most of the specimens the hind femora and 

 tibiae incline to fuscous or black, perhaps owing to discoloration. The wings are not 

 half the length of the abdomen. 



AGATHOPHIONA. 



Agathophiona, Westwood, Tijd. voor Ent. xxv. p. 19 (1882). 



Agathophiona has the neuration of Ophion, but differs from that genus in the form 

 of the abdomen (which is much thicker and not so much compressed), and also in the 

 greatly elongated labium. 



Only one species is known. 



1. Agathophiona falvicornis. (Tab. XII. fig. 11.) 



Agathophiona fulvicornis, Westw. loc. cit. p. 20, t. 4. figg. 5-13 \ 

 Hab. Mexico, San Angel (Coffin 1 ), Chapultepec (Bilimek). 



HETEROPELMA. 



Heteropelma, Wesmael, Bull. Acad. Brux. xvi. p. 120 (1849). 



The only Central- American species which can be fairly regarded as a Heteropel 

 biol, centb.-amer., Hymenopt, July 1886. 2qq 



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