Report upon Aculeate Hyriienoptera. 278 



Tribe VIII. MESOCHORINI. 



Genus Mesochorus, Gravenliorst. 



188, Mesochorus r/renadensis, n. sp. 



(J. Length r5 mm. Honey -yellow, the tip of abdomen black or 

 fuscous ; eyes purplish-black ; ocelli placed on a small black spot ; 

 legs very pale yellowish, the coxa) and trochanters whitish. Wings 

 hyaline, the stigma and veins pallid ; antenna) much longer than 

 the body, faintly dusky towards tips. 



Grenada — Balthazar (Windward side). Described from 

 four ^ specimens. 



Tribe IX. PORIZONINI. 



Genus Thersilochus, Holmgren. 



189. Thcrsilochus dorscdis, n. sp. 



9. Length 3"8 mm. iNIostly black, coriaceous, opaque; head, 

 except tlie occiput and a large spot on vertex enclosing tlie ocelli, 

 the basal four joints of antenna), prosternum, a longitiidinal baud on 

 the mesopleura, tegula?, the abdomen beneath and bands at apex of 

 the second, third and fourth dorsal segments honey-yellow ; the 

 hind legs, a band at base and apex of tibite, and their tarsi fuscous. 

 Antennae 22-jointed, the last ten joints not longer than thick, the 

 third joint the longest, nearly five times as long as thick, the 

 following to the 13th joint grcidually shortening. Thorax without 

 parapsidal furrows, Metanotum biareolated, the areas posteriorly 

 obliterated or wanting. Wings hyaline, the stigma and areolet 

 brown. 



St. Vincent. Described from 1 ^ specimen. 



Genus Insurgus, Forster. 

 190. Insurgus nigricejps, n. sp. 



9. Length 2*2 mm. Head smooth, black; clypetis, mandibles, 

 two basal joints of antenna), thorax, except the mesonotum, legs and 

 abdomen honey-yellow ; sheaths of ovipositor the length of the 

 petiole, black ; mesonotum and fiagellum fuscous or black. The 

 antennae are 17-jointed, the third joint is scarcely twice as long as 

 thick at apex and shorter than the thickened scape or first joint ; 

 joints of fiagellum to the last gradually shortening, the last a little 

 longer than the penultimate. Thorax smooth, impunctate, without 

 parapsidal furrows, the metathorax areolate. Wings hyaline, tlie 



