OF NATURAL HISTORY. 721 



2. E STUDIOSA. — Black ; terminal joint of the antenna; a« 

 long as the two preceding ones together. 



Inhabits Indiana. 



9 Body reticulate with crowded punctures : antennae monili- 

 form, of eight joints, geniculate; second joint shortest; third 

 joint hardly longer than the fourth, and gradually a little shorter 

 to the penultimate; ultimate joint about as long as the two pre- 

 ceding ones together, conic-ovate, with a very slight appearance 

 of being three-jointed : thorax, anterior segment in breadth at 

 least equal to twice the length ; suture at the scutel not dilated : 

 scute] obtusely rounded behind : wings hyaline ; nervure much 

 arcuated from the edge, its confluence with the edge about as 

 long as the branch, which is subclavate : abdomen polished, im- 

 punctured ; above oval ; laterally orbicular ; peduncle shorter 

 than the posterior coxae aud trochanters : knees and tips of the 

 tibiae honey-yellow: [273] tarsi, particularly the two posterior 

 pairs, whitish. 



Length less than one-tenth of an inch. 



EULOPHUS Geofi". Latr. 



1. E. DICLADUS. — Blackish metallic; tibiae and tarsi white. 

 Inhabits Indiana. 



Body brassy blackish, more or less tinged with cupreous, punc- 

 tured : antennae larger towards the tip ; terminal joint larger 

 than the preceding one, conic-compressed ; two long, slender 

 branches, originating near the base, and nearly as long as the 

 antennae ; tergum tinged each side with green : feet blackish : 

 tibiae and tarsi white. 



Length nearly one-twentieth of an inch. 



The terminal joint of the antennae in the female is consider- 

 ably larger than the others. 



2. E. BASALTS.— Greenish ; feet, tip and base of the antennae 

 white. 



Inhabits Indiana. 



9 Body granulated, brassy-green, with a slight violaceous re- 

 flection : antenna yellow-white, third, fourth and fifth joints 

 dusky : abdomen blackish-violaceous, basal disk whitish, and a 

 small whitish spot at tip: feet white, including the anterior 

 1835.] 46 



