Descriptions of Nciv Species of Parasitic Hymenoptera. 143 



fourth, which is not much longer than the fifth. Mandibles red, 

 black at the apex. Palpi dark fuscous. The third antennal joint 

 is fully one-fourth longer than the fourth ; the apical joint is rufous 

 and is not much shorter than the preceding two united. 



MESOSTENINI. 

 STENAULAX, gen. nov. 



Wings fuscous violaceous ; the areola small, square, receiving the 

 recurrent nervure near the middle. Disco-cubital nervure not broken. 

 Transverse median nervure received behind the transverse basal. 

 Eadial cellule of moderate length. Transverse median nervure in 

 hind wings broken shortly below the middle. Median segment 

 short, rugosely punctured, without any transverse keels; the 

 spiracles long. Antennae slender, not thickened towards the apex, 

 not ringed with white. Anterior part of clypeus depressed, flat, 

 smooth, and shining, the upper part raised, not clearly separated 

 from the face by a furrow. Temples moderately long, roundly 

 dilated, not narrowed. Front widely, deeply depressed. Abdominal 

 petiole long, the post-petiole largely dilated ; the segments are 

 smooth, impunctate. Legs stout, longish ; the tibiae sparsely, the 

 tarsi thickly spinose ; the fore tibiae not contracted at the base ; 

 their tarsi long and slender. Mandibles short, broad, stoutly 

 bidentate at the apex ; the upper tooth is the longer. The furrow 

 on the mesosternum is short. 



The body is entirely black. It is stouter, broader than usual 



with the Cryptincs. It has more the appearance of a Pimplid or 



of one of the Xoridini than of the Cryptina. Its areolet more 



resembles that of the Mesostenini than of the Gryptini and, in the 



5 , which I have regarded as the type of the genus, the apical nervure 



is bullated. In the J I have described, the transverse median 



nervure is interstitial; the face in the middle is more distinctly raised 



and separated, this being also the case with the clypeus. It has also 



the head and thorax densely covered with black hair. The spiracles 



are placed as in the genuine Cryptince, not as in the Pimplina ; and 



I have no doubt that the genus is a true member of the former 



group. 



Stenaulax pilosulus, sp. nov. 



Black ; the head and thorax densely covered with black pubescence; 

 the wings uniformly fuscous violaceous, the nervures and stigma 

 black. <? . 



Length 15 mm. 



