OF THE ISLAND OF ST. VINCENT. 



175 



Thorax above sometimes metallic, smooth ; legs 

 bluish, tarsi alone white. 



Anterior wings hyaline C. lividus, sp. n. 



Abdomen rounded. 



Thorax and abdomen metallic green, the former 



scaly-punctate; scape and legs white C. lividiceps, sp. n. 



2. Abdomen conic-ovate ; head black, abdomen 

 brownish black. 



Legs honey-yellow C. thoracicus, sp. n» 



Males. 

 Blue-black. 



Head posteriorly metallic ; legs blue, with the tarsi 



alone white ; wings hyaline C. lividus. 



Occiput and thorax above metallic or bronze- 

 green ; legs white ; wings with a substigmal 

 blotch C. stigmatus. 



Head much wider than thorax, blue ; thorax above 

 golden green, scaly-punctate ; legs, except 

 coxse and scape, white C. lividiceps. 



Chrtsochaeis stigmatfs, sp. n. 



S 5 . Length 1*1 to 1"2 millim. Blue-black ; in female with 

 the upper part of thorax metallic green ; in male with only the 

 scutellum and metathorax tinged, with aeneous, smooth. Scape- 

 and legs, except coxse in the male, whitish or honey-yellow.^ 

 Head rather large, the frons impressed, the vertex acute. Pro- 

 thorax distinct, narrowed anteriorly. Wings hyaline, ciliated,, 

 with a brownish blotch beneath the stigmal vein. Abdomen in 

 female ovate, in male oblong, the short petiole in the latter 

 brown. 



Hah. St. Vincent. 



Described from one male and one female specimen. 



The shape of the head and the collar strikingly resemble those 

 in the genus Derostenus ; but the number of joints in the antennae 

 being one less, cause me to place this species in Ghrysocharis. 

 It is readily distinguished by the substigmal blotch in the anterior 

 wing. 



Chbtsochaeis lividus, sp. n. 



S $ . Length 0"85 to 1 millim. Blue-black, impunctured, the 

 tarsi and tibial spurs alone white. Wings hyaline. Abdomen 

 in female subsessile, ovate, about as long as the thorax ; in 



