51 



Front finely closely striate<l, except at the orbits which are raised. 

 Hind ocelli in a hollow; they are smaller than the anterior. Face minutely 

 punctured. Eyes coarsely facetted. Occiput transverse; there is a fine 

 furrow in front of its bordering keel. Parapsidal furrows striated; the 

 apex of the middle lobe, irregularly rugose. The metanotum coarselj-- 

 aciculated at the base, the central area irregularly transversely striated; 

 the sides on the apical slope irregularly longitudinally striated, the striae 

 more regularly defined on the top. Prothorax above wdth a striated bor- 

 dered furrow all around; the apex of the propleurae irregularly striated. 

 Mesopleurae aciculated. Metapleurae coarsely, closely rugosely punctured 

 and thickly covered with white pubescence. 



1454 Kareba testacea sp. nov. 



Eufo-testaceous, the antennae and legs pallid testaceous, the former 

 darker towards the apex, wings hyaline, the nervures pale testaceous, 

 the transverse cubitals very faint Female. Length 2 mm., two-thirds the 

 length of the abdomen. Champerico, Guatemala. 



Head and thorax smooth, shining; the mesonotum aciculated; the 

 furrows distinct, roundly curved, irregularly striated, the space between 

 them at the apex irregularly longitudinally striated and transversely 

 more finely, the whole forming irregular reticulations. Median segment 

 finely closely punctate, the narrowed base of the middle area irre- 

 gularly reticulated, the rest closely tranversely striated. On the top of 

 the propleurae is a curved band of distinct striae. Mesopleurae closely, 

 finely punctured; an obliquely irregularly striated depresiou at the top 

 above; the metapleurae finely, closely, obliquely, striated above, the 1-est 

 finely rugose. First abdomnal segment keeled down the middle, the sides 

 finely striated, the second segment finely, closely, longitudinally striated, 



1465 Opius forticornis sp. nov. 



Black, the oral region, mandibles, palpi, legs and base of abdomen, 

 rufo-testaceous; the wings hyaline; antennae stout, black, the scape tes- 

 taceous in the middle below. Head smooth and shining, the face sparsely, 

 covered with short pale pubescence. Thorax smooth, shining, parapsidal 

 and mesopleural sutures obsolete, median segment impunctate except at 

 stigma, the centre of the radius curved upwards; the third abscissa twice 

 the length of the basal two united; the first transverse cubital nervure is 

 roundly curved outwardly, the transverse median nervure is clearly re- 

 ceived beyond the transverse basal; the basal abscissa of the cubitus is 

 curved. Length 1 mm. Chinandega, Nicaragua. 



Similar in size and coloration to O. iridipennis, but may be known 

 from it by the absence of the pleural furrow, the curved first transverse 

 cubital nervure, which is also received further from the base of the cu- 

 bitus, and by the stouter antennae, not testaceous at the base. 



1464 Opius iridipennis sp. nov. 



Black, the bases of antennae, oral region, mandibles, palp;, legs, and 

 the greater part of the second abdominal segment, rufo-testaccous; wings 



