2G6 Mr. W. H. Ashinoad's 



joint of the flagellum ; all flagellar joints slender, cylindrical, and 

 all longer than the first, except the last ; pedicel small, ronnded. 

 Mesonotum Avith distinct parapsidal furrows and with a more or 

 less distinct median furrow. Scutellum convex, longer than wide. 

 Metathorax short, smooth. Wings hyaline, very long and narrowed, 

 with very long cilia, the marginal vein short, punctiform. Legs very 

 long, slender, the tarsi longer than their tibia\ 



St. Vincent. Described from one ^ specimen. 



168. Pulyn.cma grcnadcnsis, n. sp. 



$ . Length 1 mm. Polished black ; two basal joints of antennte, 

 legs, except front coxse, and petiole of abdomen yellow ; flagellum 

 and front coxre brown. Head transverse, very little wider than the 

 thorax, the lateral ocelli placed close to the eye margin, the pronotum 

 distinct, the mesonotum twice as long as wide, with distinct parapsidal 

 furrows. Wings hyaline, with long cilia, the marginal vein short, 

 brown. Abdomen conical, ending in a prominent ovipositor, which 

 is about as long as the basal joint of tlie hind tarsi ; the yellow petiole 

 is slender, a little longer than the hind coxte. 



Grenada — Mirabeau Estate (Windward side). Described 

 from one % specimen. 



1G9. Poli/ncma alhico:xa, n. sp. 



$ . Length 1 mm. Polished black, impunctate ; head subquad- 

 rate, the face with two anteunal grooves. Antennae 9-jointed, pale 

 honey-yellow, the club large, oblong, solid, black. Thorax elongate, 

 the parapsidal furrows delicate but distinct. Wings hyaline, with a 

 dusky cloud at the middle, the margins longly fringed, the sub- 

 marginal vein not attaining the costa. Legs honey-yellow, the coxoc 

 white, the posterior femora embrowned. Abdomen elongate, pointed 

 at apex, polished black, the petiole yellow, the ovipositor exserted 

 as long as the club of the antennto. 



St. Vincent. Described from 1 $ specimen. 



The colour of the antennte and le,!^"s, and the shorter 

 ovipositor, easily separate the species from P. grcnadcnsis. 

 The above four species are the only ones so far noticed in 

 the West Indies, although the family must be well repre- 

 sented in all countries of the globe. Their minute size 

 and the difficulty of securing these delicate and fragile 

 insects probably accounts for their apparent absence in all 

 the collections brous^ht home from foreign shores. 



