1865.] 41 



white ; eyes large, round and prominent ; antennae very slender, longer 

 than the body, piceous, the basal joint beneath white. Thorax gibbons, 

 smooth and polished, rufous ; a line over the collar, tegulse, a spot be- 

 fore and another beneath the anterior wing, and a largre, oblonu' spot 

 on each side of the pleura, white; mesothorax depressed before the 

 scutellum. highly polished and very smooth ; scutellum slightly flat- 

 tened ; metathorax convex, opaque, minutely rugose, without elevated 

 lines, the dorsal surface with a large blackish stain. Wings narrow, 

 hyaline, iridescent; nervures and stigma fuscous; areolet wanting; 

 2nd discoidal cell long and narrow. Legs whitish, long and slender, 

 the coxae robust; suture between the trochanters and femora, a subob- 

 solete spot on the outside of the posterior coxae, tips of their femora 

 and tibiae, and their tarsi entirely, more or less dusky; tarsal claws 

 apparently simple, dilated at base and slightly curved at tip, the pul- 

 villi large. Abdomen sessile, cylindrical, narrow, longer than the head 

 and thorax, slightly thickened towards the tip ; blackish, polished, the 

 3rd and 4th segments above stained with brownish; 1st segment elon- 

 gate, linear, with a slight tubercle on each side towards the base ; 2nd 

 and 3rd segments subequal, about twice as long as broad, each with a 

 slight tubercle on each side very near the base. Length 21 lines; 

 expanse of wings 5? lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Easily recognized by the long slender antennae, the red polished 

 thorax, and the elongate, slender, cylindrical, sessile abdomen. It 

 may not belong to the genus under which 1 have placed it. but is more 

 closely allied to it than to any other genus with which I am acquainted. 



Genus CAMPOPLEX, Grav. 

 Campoplex tibiator, n. sp. 



Dull rufous: head, antennae, mesothorax and femora, black: base of antennae, 

 teguke, scutellum and all the tibiae and 4 anterior tarsi, yellow : wings hyaline, 

 apex fuscous, areolet large and subrhomboidal. 



Female. — Head black, clothed with short pale pubescence, more 

 obvious on the face ; clypeus rufous ; most of mandibles and the palpi, 

 yellowish ; antenna? two-thirds the length of the body, brown-black, the 

 two basal joints yellow. Thorax clothed with a thin pale pubescence ; 

 mesothorax black, opaque; tegulae yellow; pectus blackish, rufous 

 about the collar; pleura dull rufous, shining, finely punctured; scutel- 

 lum convex, opaque orange-yellow; postscutellum black, as well as the 

 space on each side of the scutellum; metathorax dull rufous, dusky on 

 the posterior face, clothed with short whitish pubescence, indistinctly 

 sculptured, posterior face depressed and somewhat sulcate. Wings 



