narrow; j)ara]>si(lal furrows deop. Scutellar furrows blackish, the lateral 

 narrower but more clearly defined than the central pair. Postcutelluni 

 pale orange yellow. Abdomen longer than the head and thorax united, 

 its apex sharply produced. Apex of mesopleurae with a black stripe7 

 the metapleurae with a broader one. The pleurae aciculated, except on 

 the centre of the mesopleurae. The testaceous colour of the head aad 

 thorax is tinget with orange. 



1444 Tetrastichus Nicaraguaensis sp. no v. 



Dark green, largely marked with brassy tints; legs testaceous, the 

 coxae and bases of femora broadly dark green; scape of antennae tes- 

 taceous, the flagellum blackish fuscous; the nervures testaceous. Female. 

 Length nearly 2 mm. Chinandega, Nicaragua. 



Antennae stout, thickly covered with white pubescence. There is 

 a distinct curved furrow in front of the ocelli. Inner orbits distinctly 

 margined, punctured, the sides of the face with a deep wide furrow, 

 which curves inwardly below. Oral region fiery red. Thorax closely punc- 

 tufed. Parapsidal furrows wide, deep, bordered on the inner side by 

 some short, transverse furrows; the central furrow narrow; the scutellar 

 furrows bordered outwardly by some transverse ones; the lateral furrows 

 distinct. Metanotum with a stout keel in the centre, a thinner less 

 distinct one either side and two short oblique ones on the outer side in 

 the middle. Pleurae strongly punctured. Abdomen stout, not much longer 

 than the thorax; it is thickly covered with short, white hair. 



1439 Macreupelmus piilchriceps sp. nov. 



Blue, largely marked with coppery and brassy tints on the head and 

 ui)per part of the thorax; the head more brilliantly coloured than the 

 thorax and having also violaceous tints; the four front legs rufo- 

 testaceous, their coxae brassy blue as are also the hinder pair, the hind 

 femora blue, testaceous at base and apex, the tibiae black, pale testa- 

 ceous at base, white at the apex; the basal two joints of the hind tarsi 

 white, the others black; the ovipositor as long as the middle tarsi, the 

 extreme apex black, followed by a large white band, which extends 

 slightly beyond the middle, the rest being black; the middle tarsi black- 

 ish below, the basal joint closely covered with stiff stout hairs; antennal 

 scape rufo-testaceous, the flagellum black; clypeus with the apex 

 slightly, roundly incised. Female. Length 3.5 mm., terebra 1 mm. San 

 Marcos, Nicaragua. 



Antennae longer than the head and thorax united, slender, slightly 

 dilated at the apex; the basal joints of the flagellum metallic blue and 

 dark brassy. Head closely and strongly punctured; the front depressed, 

 roundly but not deeply in the centre; the malar space with a distinct 

 furrow reaching from the eyes to near the apex. Mandibles black, red 

 at the base. The middle lobe of the mesonotum is rounded at the base 

 and becomes gradually narrowed to the apex; the apex of the mesonotum 

 has the sides clearly raised, transverse. Scutellum fiery red, obliquely 



