THE CANADIAN ENTOMOLOGIST 403 



purplish brown. Ovipositor short, stout, the terminal lobes 

 narrowly oval, with a length three times the width and sparsely 

 setose. Other characters practically as in the male. 



Pupa. — Length .9 mm., moderately stout, probably yellowish, 

 the antennal cases extending nearly to the base of the abdomen, 

 the wing cases to the third abdominal segment, and the posterior 

 leg cases almost to the tip of the abdomen; the thoracic horns 

 long, filamentaceous, the posterior extremity with submedian, 

 conical processes. 



Larva. — Length 2 mm., moderately slender; extremities, 

 anterior conical, posterior broadly rounded, the head and breast- 

 bone not recognizable in the preparation. 



Egg Shell. — Length .5 mm., narrowly oval, the surface with 

 numerous minute, hexagonal thickenings, the latter with minute 

 spines arising mostly in or near the angles. 



The large size of the egg shell suggests that the females of this 

 species, like Miastor, produce comparatively few eggs. 



Indodiplosis, n. gen. 

 This genus approaches Erosomyia Felt, in the greatly pro- 

 duced and broadly rounded posterior area of the wings, and is 

 readily distinguished therefrom by all of the claws being unidentate, 

 a feature unique so far as known to us, among the sub-tribe bifili. 

 Type /. mangifercB, n. sp. 



Indodiplosis mangiferae, n. sp. 



Gall midges were labeled "March 23, 1914, in galls of Mango 

 leaf. Pusa, A. H. C, No. 1023." A female, presumably conspecific, 

 was received from the same source and labeled "C. No. 100, Mango 

 leaves, Pusa, Bihar, T. Ram, September 26, 1915." These dates 

 would indicate the possibility of there being two generations annual- 

 ly, though the appearance of the female may have been erratic 

 and induced by abnormal conditions. 



Male.— Length. .75 mm. Antennae nearly twice the length of 

 the body, thickly haired, light brown; 14 segments, the fifth with 

 the stems equal and one-fourth greater than their diameters re- 

 spectively ; basal enlargement subhemispheric, the distal enlarge- 

 ment subglobose, each with a sparse whorl of long, stout setai and 

 moderate circumfili, the loops, about eight in number, being 



