[13] 



C. R. CROSBV : CHALCIS-FLIES FROM ZUMBO 



89 



compressed, one half as long as the flagellum ; pedicel longer than 

 any succeeding joint ; ring-joint white ; funicle joints two, sub- 

 equal ; club longer than the funicle, composed of three segments, 

 the last two closely united, the last joint prolonged into a style- 

 like process ; hairs sparse and stiff. AU coxae blue, femora and ti- 

 biae brownish, tip of tibiae and tarsi light. Wiíigs hyaline with a 

 brownish transverse cloud behind marginal vein ; veins brownish 

 except base of marginal ; submarginal a little shorter than margi- 

 nal; post marginal very short, shorter than stigmal vein and club ; 

 the club oval not sharply distinguished from the stigmal vein ; the 

 claw distinct and arising from the side of the club. The base of 

 the wing is naked. 



Abdómen seen from above broadly oval, obtusely rounded be- 

 hind ; second segment over twice as long as third, the third the 

 shortest, fourth to sixth sub-equal, seventh about equal to the second. 

 Sculpture of abdómen a very delicate reticulation. Ovipositor only 

 slightly exserted. 



Male. — Length, I. 6 mm. Resembles the female closely in 

 íorm and color except that the abdómen is more slender and the 

 legs are much lighter, the tibiae being entirely yellow. 



Described from numerous specimens of both sexes. 



Parasites of an unknown fly which produces galls in the branches 

 of the Pteleopsis myrtifolia Laws. Cfr. Tavares 1. c, no. 14, Tabula 

 xv, fig. 15. 



17- TetrastíCUS albipes new species, Crosby. 



Female. — Length, 2. 3 mm.; abdómen, I. 5 mm. Head seen 

 from above wider than the thorax, concave in front and behind ; 

 seen from in front nearly round, a little wider than high, bluish 

 green with metallic reflections. In certain lights a testaceous ground 

 color is visible, especially around the ocelli. Sculpture of head very 

 delicate, cheeks and face with shallow setigerous punctures. 



Thoracic dorsum a darker blue-green than the head, its sculp- 

 ture extremely delicate; pleurae testaceous in ground color but with 

 greenish reflections. 



Scape of antennae nearly white, flattened, narrowly oval ; rest 



of antenricE vellowish tinged with duskv ; pedicel a little longer than 

 il 



