124 MB. W. H. ASHMEAB ON THE PARASITIC HTMENOPTEEA 



yellow. Head transverse, smooth above ; orbits and face, below 

 antennaa, punctate. Palpi fuscous. Antennae 36-jointed, longer 

 than the body. Thorax trilobed, the middle lobe posteriorly 

 rugose, the mesopleura with a smooth space on the disk. Scu- 

 tellum smooth, with two large, confluent fovese at base. Meta- 

 thorax coarsely rugose. Wings fuliginous. Abdomen compressed 

 along the venter and slightly at tip, the first and second segments 

 above black, striated, the following segments smooth, the third 

 with a black spot at base and showing some faint transverse 

 aciculations. 



Hob. St. "Vincent. 



Described from five specimens, taken at an altitude of 500 feet. 



Subfamily Chelonin^. 

 PsiaiNOTOMA, Wesmael. 

 Table of Species. 

 Pale ferruginous or honey-yellow, varied more or less 

 with fuscous. 



Thorax trilobed 2. 



Thorax not trilobed. 



Occiput deeply emarginated; first branch of radius 



distinctly longer than the second P. insularis. 



Occiput not deeply emarginated; first branch of 



radius half the length of the second P. humeralis. 



2. First branch of radius as long as or longer than the 

 second. First transverse cubital nervure not inter- 

 stitial with the recurrent nerpure, but joined to 



the cubital nervure P. meridionalis. 



First transverse cubital nervure interstitial P.fuscovaria. 



Ph^notoma instjlaris, sp. n. 



S ' Length 4 millim. Pale ferruginous, closely, finely punctu- 

 late ; a spot back of eyes and ocelli, the humeri, a spot on middle 

 of thorax, collar beneath, the bottom of the impression at sides, 

 the sternum, spot beneath tegulse, and metathorax and the 

 abdomen above except an oblong discal spot, a spot on middle 

 and posterior femora beneath near the apex, and the posterior 

 tibise, except just at base, fuscous. Antennae 23-jointed, taper- 

 ing at tips. Head broader than the thorax, deeply excavated 

 posteriorly. Thorax without furrows ; scutellum triangular ; 

 metathorax short, finely rugose, with a slight keel on the superior 

 edge of the posterior face connected with delicate lateral keels, 

 the disk without keels. "Wings subhyaline, mottled with whitish 



