Manchester Memoirs, Vol. xliii. (1899), No. 3. 191 



apex, which is, in front of the keel, more strongly punc- 

 tured. The mark on the edge of the pronotum is dilated 

 at the base ; the lower part of the propleurae is more 

 widely yellow, the band being dilated in the middle above; 

 on the mesopleurae in the middle is a broad, yellow band, 

 curved upwards at the base and, to a less extent, down- 

 wards at the apex ; on the metapleurae, near the apex, is 

 an irregular mark. The anterior coxae and trochanters 

 are yellow; the middle pair fulvous, tinged with yellow; 

 the four anterior trochanters are marked with black ; the 

 hinder coxae black, yellow at the base above ; the 

 trochanters at the base and the apex above, and the tibiae 

 and tarsi, black. Wings hyaline, tinged with fulvous, 

 especially at the base ; the costa and nervures fuscous ; 

 the petiole of the areolet is longer than its inner branch ; 

 the outer branch is obliterated beneath. All the abdominal 

 segments are twice as long as broad ; the petiole is longer 

 than the second segment ; the basal three segments are 

 closely punctured, the apical quite smooth. Except at the 

 apex, the ventral surface is lemon-yellow. 



Meyva, gen. nov. 



Areolet with a long pedicle ; the recurrent nervure 

 interstitial with its second branch. Eyes large, reaching 

 near to, but not touching, the base of the mandibles and 

 not converging beneath. Mandibles with two stout, unequal 

 teeth on the apex. Head oblique, not projecting behind 

 the eyes ; the occiput margined, Mesonotum forming 

 one piece. Metanotum with a transverse keel beyond the 

 middle ; its spiracles elliptical ; about three times as long 

 as their breadth. Abdominal segments all longer than 

 wide, the petiole as wide at the base as at the apex ; its 

 spiracles small, round, and placed at the end of the basal 



