ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 507 



fuscous, the hind coxse and trochanters somewhat whitish ; abdomen beneath rufo- 

 piceous. Wings subhyahne with a large subfuscous discoidal cloud. 

 Brazil : Santarem. One specimen. 



Genus HORISMENUS Walker. 

 HORISMENUS CLEODORA Walker. 



Horismenus cleodora Walker, Ann. & Mag. Nat. Hist., XI., 1843, p. 31, 9. 

 Entedon cleodora Walker, List Chalc. Brit. Museum, I., 1846, p. 66. — Dalla Torre, 

 Cat. Hym., V., 1898, p. 35. 

 Peru : Lima. 



TABLE OF NEW SPECIES. 



1. Species mostly aeneous black or blue 2 



Species mostly metallic green or at least above. 



Protborax at tbe sides, the mesopleura and tbe coxse blue, rest of legs and the scape pale yel- 

 lowish ; metanotum long with two opaque sulci H. bisulcus. 



2. Species mostly blue 3 



Species mostly aeneous black. 



Metanotum brassy ; scape, pronotum anteriorly, pleurse and legs, except as noted, dark blue ; tips 

 of femora, the tibiae and tarsi, except last joint, yellowish-white H. brasiliensis. 



Metanotum not brassy ; head in front ; the axillae and a spot on upper margin of the mesopleura 

 metallic greenish ; scape and legs, except coxse, honey yellow, a spot on knees, tips of tibiae 

 and the tarsi yellowish-white ; abdomen conically pointed, a little longer than the head and 

 thorax united S:. corumbse. 



3. Scape and legs, except coxae and parts hereafter noted, honey yellow, the femora dusky basally, the 



knees, tips of tibiae and the tarsi, whitish ; scutellum with an aeneous tinge S. persimilis. 



Scape and legs, except coxse, honey yellow, the tarsi whitish ; frons, the dorsum of pronotum and the 



disk of the mesonotum, aeneous S. seneicoUis. 



Horismenus bisulcus, sp. nov. 



Female. — Length 2.4 mm.; above metallic greenish, the prothorax at the 

 sides, the mesopleura and the coxse blue, the abdomen black ; the scape of the 

 antennee, except at apex, and the legs, except coxfe, are pale yellowish or yellow- 

 ish-white. The head and the thorax, except the metanotum, are mostly scaly 

 punctate or punctate, the metanotum being smooth and shining, with two 

 broad longitudinal sulci, extending from base to apex. Wings hyaline, the veins 

 pale yellowish. The abdomen is shorter than the thorax, short ovate, the ter- 

 minal segments retracted within the large second segment which occupies most of 

 the whole surface ; the petiole is opaque, furrowed and a little longer than thick. 



Brazil : Chapada, in April. 



Horismenus brasiliensis, sp. nov. 

 Female. — Length 1.6 mm.; aeneous black, with a bluish tinge on the parapsidis 

 and at the sides of the thorax, the metathorax being brassy ; the legs, except the 



