1865.] 285 



Genus TRACHYNOTUS, Grav. 

 Trachynotus reticulatus, n. sp. 



Black; antenme, legs and abdomen brown-black : frontal orbits, an obsolete 

 interrupted line on each side of mesothorax, and the anterior legs in front, pale 

 yellowish; wings hyaline, iridescent. 



Male. — Dull black, coarsely and transversely rugose ; head subquad- 

 rate, smooth and shining, the face very finely sculptured, thinly clothed 

 with short pale glittering pubescence; frontal orbits, more or less in- 

 terrupted, pale yellowish ; mandibles tinged with ferruginous; antennae 

 slender, nearly half the length of the body, entirely piceous-black. 

 Thorax transversely rugose, the mesothorax rough and somewhat re- 

 ticulated, with a more or less interrupted yellowish longitudinal line on 

 each side, sometimes obsolete; prothorax striated; pleura finely rugose; 

 scutellum coarsely rugose, with a very deep excavation in front; nieta- 

 fchorax coarsely reticulated, the extreme base with a very irregular 

 transverse carina on each side of the middle, enclosing a narrow, nearly 

 smooth space ; tegulae piceous, with the posterior margin pale yellow- 

 ish. Wings hyaline, iridescent; nervures black, pale at base. Legs 

 piceous-brown, the two anterior pairs more or less yellowish ; the pos- 

 terior pair blackish, their tibiae and tarsi tinged with rufo-piceous. 

 Abdomen very long and slender, thickened and subcompressed at tip; 

 brown-black ; sometimes the basal sides of the first segment and a spot 

 on each side of the apex, are pale yellowish ; the three basal segments 

 long and linear, the second the longest; the third, fourth and fifth seg- 

 ments are more or less tinged with rufo-piceous. Length 5J lines; 

 expanse of wings 6 lines. 



Three specimens. 



Genus CREMASTUS, Grav. 

 Cremastus fulvescens, n. sp. 



Fulvous ; face, broad outer orbits, clypeus, mandibles, and legs in part, yel- 

 low ; tips of posterior tibiae, black ; wings dark fuscous. 



Female. — Head transversely subglobose, very finely and closely punc- 

 tured, shining, clothed with fine pale pubescence; yellow, the occiput 

 and posterior margin of the cheeks fulvous, the vertex, behind the in- 

 sertion of the antennae blackish ; cheeks smooth and polished with a 

 few scattered delicate punctures; tips of mandibles black; antennae 

 filiform, rather more than half the length of the body, dusky ferrugi- 

 nous, the basal joint beneath yellowish. Thorax fulvous, shining, 

 sparsely punctured, clothed with a short, thin, yellowish pubescence; 

 prothorax densely punctured; mesothorax and pleura polished, some- 

 times more or less black beneath the four anterior legs, the mesothorax 

 densely punctured on the disk and transversely striated on the posterior 



