OF WASHINGTON. 177 



2. Scutellum posteriorly bidentate or obtusely bituberculate; body of 



abdomen short, subcompressed, the petiole k>ng. 

 Wings hyaline, with two transverse fuscous bands. 



L. bi fascia turn Westw. 



Wings hyaline, with a single broad transverse band beyond the 

 middle L. unifasciatum Westw. 



3. Abdomen much compressed, produced into an acute point at apex as 



in Eurytoma ; petiole very long; legs black. 



Wings smoky, with the basal one-third and a broad band across the 



disk fulvo-ferruginous L. abdominale Westw. 



4. Abdomen black; anterior coxae, trochanters, the hind legs, except 



tarsi, the pectus and metathorax behind black; wings hyaline, with a 



large smoky macula toward apex L. westwoodii Cam. 



Abdomen and legs entirely rufous; wings hyaline, with a broad fascia 

 across the disk of wings; the basal half of marginal cell and the disk 



of wing directly beneath it, hyaline L. rufum sp. n. 



Liopteron fenestratum sp. n. 



<j\ Length 6 mm. Entire body, except head in front and the cheeks, 

 black, shining, clothed with long, sparse, whitish hair, denser on cheeks 

 and legs; head arid thorax coarsely rugose, with deep, large punctures; 

 head with a sharp carina between Antennae, the face and cheeks honey- 

 yellow; antennae i4-jointed, strongly incrassated toward tips, a little 

 longer than the body, the first four joints of flagellum long, cylindrical, 

 very nearly equal, the second very slightly the longest joint, the fourth 

 thicker, the joints from fourth are shorter and somewhat rapidly increase 

 in thickness, so that the last eight joints form a long fusiform club ; 

 thorax with three complete grooved lines, but somewhat obscured by 

 the coarseness of the sculpture, the collar anteriorly abruptly truncate, 

 the superior margin sharp, the anterior face polished ; scutellum 

 obtusely truncate posteriorly, not tuberculous; wings fuscous with 

 hyaline spots; abdomen clavate, the petiole long bisulcate above, about 

 two-thirds as long as the body of abdomen, the latter oblong, subcom 

 pressed, smooth and polished, except the three short apical segments, 

 which are pitted with coarse punctures. 



Hab. Santarem. 



Described from i 6\ collected by Mr. Herbert H. Smith. 



Liopteron tarsale sp. n. 



9- Length 5 mm. Agrees with L. fenestratum in stature and sculp 

 ture, but the entire insect, except the anterior and middle tarsi, is black; 

 anterior and middle tarsi piceous-brown ; antennae 13-jointed, subclavate, 

 two-thirds the length of body, the first flagellar joint only two-thirds the 

 length of the second ; the mesopleura are polished, with a large depression 

 just beneath the tegulas covered with an appressed pubescence, below 

 this is a deep longitudinal furrow terminating in a little curve behind; 



