Ili/menopterous Genera Myzlne and Plcsia. 505 



notnm smootli anteriorly, punctured rugose posteriorly, tlie 

 lateral sulci ill-dcfinecl ; the scutellum sparsely puiicrured, 

 smooth and shining in the middle at the hase. Mediu'i 

 segment minutely punctured at the base, more strongly at the 

 apex, the posteiior truncation slightly concave, shining, and 

 almost smooth ; a narrow and shallow sulcus, bordered on 

 each side by a low carina, from the bise of the segment to 

 tiie base of the truncation, tlie sides of the segment obliquely 

 striated. Abdomen shallowly and not very closely punctured ; 

 the petiole of the basal segment scarcely longer than broad, 

 the epipygium closely and finely longitudinally striated and 

 broadly rounded at the apex. The radial cell is narrowly 

 rounded at the apex, the second cubital cell is a little more 

 than half as long as the third on the radial nervure ; the first 

 recurrent nervure is received close to the middle of the second 

 cubital cell, the second at one-quarter from the apex of the 

 tliird cubital cell. 



Black; the head rufo-ferruginous, the flagellum fusco- 

 fenuginous, the apex of the mandibles black. The spines of 

 the tibife and tarsi white, some of those on the tarsi testa- 

 ceous, the tegulae testaceous at the apex. Wings fuscous, 

 liu.-hed with blue, subhyaline at the base ; nervures black. 



Length 12-14, length of wing 8-9 n)ni. 



J lab. Tamatave, Madagascar. 



This will almost certainly prove to be the female of 

 I\ nodosa, Guer. Allied to P. atopogamia, Saus.s. 



Ty}je in B. i\I. (ex coll. Turner). 



A specimen from Betsileo, Madagascar, has the pronotum, 

 the middle of the mesonotum, the apex of the scutellum, and 

 the tarsi red, and the wings dark fulvo-hyaline. This appears 

 to be a colour-variety only, but may possibly prove to be 

 distinct. 



Plesia (Mesa) erythropoda, sp. n. 



9 . Clypeus slightly convex towards the middle and sul)- 

 carinate, shining, very finely punctured. Mandibles acute at 

 the apex, with a (ringe of fulvous hairs on the lower margin. 

 Head shining, rather sparsely punctured ; the front between 

 the antenmc bilobed, divided by a deep longitudinal sulcus 

 \vhich is shallowly continued halfway to the anterior ocellus, 

 the space round the ocelli almost smooth. Scape shining, 

 with a few long fulvous hairs beneath, smooth above ; the 

 second joint of the flagellum nearly half as long again as the 

 first and much stouter. Tronotum siiortor tlian the median 

 segment, rather closely punctured, some of the punctures 

 condueut longitudinally but not very deep, the pubescence 



