OF THE ISLAND OF ST. YINCENT. 135 



rugose. Wings greyisb-hjaline, the venation brown; the first 

 branch of the radius very short, the recurrent nervure not inter- 

 stitial, joining an angle in the second submarginal cell. Abdomen 

 oval, the second and third segments equal, shorter than, the 

 first, the first carinated and with a groove at the sides ; rest of 

 the abdomen smooth, polished. 



Sab. St. Yincent. 



Described from 20 specimens, 



Opifs iNstriiAEis, sp. n. 



6 $ • Length 1 to 2 millim. ; ovipositor short. Entirely honey- 

 yellow, smooth and polished; the male abdomen black toward 

 apex. Antennae in female 19- to 26-jointed, black, the two basal 

 joints pale ; in male 24- to 27-jointed. Thorax smooth, without 

 furrows, the scutellum foveated at base, the mesopleura with a 

 crenate furrow, metathorax rugose or areolated. Wings hyaline, 

 the venation pale brown; the first branch of radius very short, 

 the recurrent nervure joining an angle in the second submarginal 

 cell. Abdomen oval, the first segment roughened, with grooved 

 lines at sides, the following segments smooth, polished, the 

 second segment shorter than the first, with two oblique fovese at 

 base. 



Hob. St. Vincent. 



Described from 11 specimens. 



Opitts tjnifasciattjs, sp. n. 



S . Length 2| millim. Black, polished ;' the basal two-thirds 

 of second abdominal segment, two basal joints of antennse, and 

 legs yellow. Antennae 29-jointed. Thorax smooth, polished, 

 without furrows, the scutellum with a crenate furrow along the 

 base, a crenate furrow on the mesopleura, and the metathorax 

 coarsely rugose. Wings hyaline, iridescent, the venation brown ; 

 the first branch of the radius short, the recurrent nervure inter- 

 stitial with the first transverse cubital nervure. Abdomen oval, 

 smooth, polished, the second segment longer than the first, 

 striated, furrowed at sides. 



Sab. St. Vincent. 



Described from a single specimen. 



Opiijs inteestitialis, sp. n. 



c? 2 . Length 1 to 2 millim. ; ovipositor very short, scarcely 

 exserted. Entirely honey-yellow, seldom with the tip of the 



