150 MR. W. H. ASHMEAD ON THE PARASITIC HYMENOPTERA 



notum (except a large spot at posterior angles and the pleura), the 

 petiole, markings on disks of abdominal segments 2, 3, 4, and 5, 

 and the base of ventral segment 2, black or dusky. Wings hya- 

 line, the venation pallid, the marginal vein about twice as long 

 as the stigmal. Antennae in female filiform, the funicle-joints 

 about twice as long as thick, the first the longest ; hind tibiae 

 with stiff bristles behind. Abdomen conic-ovate, compressed, 

 pointed at apex, the petiole as long as the hind coxae, the fourth 

 body-segment two and a half times as long as the third. 



In the male the antennae are wholly black, except the scape at 

 base or beneath, the funicle-joints all elongated, pedicellate at 

 apex, with two whorls of widely separated long hairs, the first 

 joint being as long as the scape ; abdomen ovate, compressed, the 

 petiole long, slender, the third and fourth body-segments nearly 

 of an equal length ; spiracles of the sixth segment surrounded by 

 black. 



Sab. St. Yincent. 



Described from 4 female and 3 male specimens. 



Chrtsidea, Sp'mola. 



This genus seems to differ from Murytoma only in its strongly 

 metallic colour, and unless structural characters are discovered 

 to separate the two, it cannot be accepted as a valid genus. 



The genus seems peculiar to the South- American fauna, but 

 a single male specimen being in the collection from St. Yincent. 

 The genus is placed in the family Perilampidse by Westwood 

 and Spinola. 



Chrtsidea atjrata, sp. n. 



S . Length 2 millim. Head, thorax, and coxae golden green, 

 strongly coarsely confluently punctate ; scape at base and legs, 

 except the coxae and hind femora, brownish yellow; rest of 

 antennae, hind femora, except tips, and the abdomen black, the 

 latter with an aeneous tinge at the sides of the 4th segment. 

 Antennae very long, the funicle-joints all lengthened, pedicellate at 

 apex, and with 2 whorls of long white hairs, each joint being also 

 sHghtly constricted at the middle between the whorled hairs, the 

 first joint being almost as long as the scape. Wings hyaline, the 

 venation pale brownish yellow, the marginal vein about twice the 

 length of the stigmal. Abdomen with a long petiole, which is 

 thicker at base than at apex ; body of abdomen pear-shaped, the 



