or THE ISLAISTD OF ST. VINCENT. 225 



Mesonotum with two delicate furrows. 



Brownish yellow, impunctured ; metathorax and tip 

 of abdomen obfuscated; petiole striate; the 

 second abdominal segment smooth ; postscutellar 

 spine distinct. 

 Legs, scape, and pedicel yellow, c? $ 0. pallida, sp. n. 



Opisthacantha polita, sp. n. 



$ . Length 1 millim. Polished black; first and second abdo- 

 minal segments striate ; thorax without furrows ; postscutellar 

 spine minute ; antennae short, black, the scape and pedicel brown : 

 first f unicle-joint small, very little longer than thick, thinner than, 

 and scarcely half the length of, the pedicel, the three following 

 "joints small, transverse ; club large, stout. Wings subhyaline, 

 the nervures brown ; marginal vein somewhat thick, not quite as 

 long as the slender stigmal vein ; basal nervure subobsolete. 

 Legs, including coxae, brownish or honey-yellow. Abdomen oval, 

 polished, the first and second segments striate, the third segment 

 tbe largest, fully twice as long as the second, the first not longer 

 than thick, shorter than the second. 



Hab. St. Vincent. 



Described from two specimens. 



Opisthacantha pallida, sp. n. 



c? . Length 1*2 millim. Pale brown ; flagellum and meta- 

 tborax fuscous ; legs pale yellow. Head transverse, the lateral 

 ocelli only their width from the margin of the eye ; antennae 

 long, filiform; flagellar joints 1 and 2 scarcely twice as long as 

 thick, the following joints to the last a little longer, the last joint 

 one half longer than the penultimate. Thorax with two delicate 

 but complete furrows. Postscutellar spur distinct, triangular. 

 Wings fuscous, the basal nervure distinct, the marginal two thirds 

 the length of the stigmal. Abdomen oblong-oval, depressed, the 

 first three segments faintly aciculated, the first very little shorter 

 than the second, more than twice as long as thick, the second and 

 third about equal in length. 



2 ' Length 1*3 millim. The antennae terminate in a large, 

 dusky, 6-jointed club ; the pedicel is longer than the first funicle- 

 joint, the first and second funiele-joints subequal, scarcely longer 

 than thick, the third quadrate, the fourth minute, transverse ; 



