23 



manner at the base of the marginal vein, the longest marginal 

 cilia (of the dorsal margin towards the apex) one-third as long 

 as the greatest width of the wing. Low^er part of face, thorax 

 and abdomen very sparsely clothed with longish dark hairs. 

 Sheath of ovipositor extending behind apex of dorsnm of ab- 

 domen for a length about equal to the three basal joints of the 

 hind tarsi, or rather less than half the length of the abdomen. 

 (Description from specimens in balsam). Length 1 mm. or 

 more, excluding ovipositor. 



Differs essentially from G.rivalis Gir. in that the sixth funicle 

 joint is not small and shorter than the fourth, but is subequal 

 to the fifth and seventh. 



Ilab. Mexico, Orizaba, Vera Cruz, bred from eggs of Jassid 

 on sugar cane, Dec. Sth, 1007. (Koebele). 



(4) Gonaiocerus juvator sp. nov. 



Black (becoming paler in balsam) the basal ]iart of the ab- 

 domen and the legs yellow, the front and hind coxae, hind fe- 

 mora widely on the apical portion, and the hind tibiae very 

 conspicuously, black or dark. Scape and pedicel more or less 

 yellowish in part, especially in balsam specimens. Wings 

 noticeably, but lightly and evenly infuscate on their pilose por- 

 tion. 



Antennae of female with the first fonr funicle joints con- 

 spicuously short as compared with the following four ; the ped- 

 icel is fully as long as the two first together or subequal to the 

 fifth funicle joint. The first, second and third funicle joints 

 are subequal, the second narrower than the others, the fourth 

 is a little longer. The fifth to the eighth are subequal, the sixth 

 not bcino- uoticeably shorter than the fifth or seventh; the latter 

 twice as long as wide. Club subequal to the three preceding 

 joints. 



Antennae of male w^ith the funicle joints all nearly equally 

 elongate, the antepenultimate antennal joint being three times 

 as long as wide. Front wings with the longest cilia one-third 

 as long as the greatest width of the wing. The line of cilia 

 which leaves the dorsal margin and runs inwardly to this ter- 

 minates basally at the same point as the fringe of the dorsal 



