FAM. MYRMEC0LAC1D.E i3 



TABLE OE GENERA 



la. Wings short in proportion to body, with tight primary veins. Fifth. 



and sixth antenna! joints subclavate i. Genus Myrmecoi.ax, Westwood. 



■lb. Wings long, with only six primary veins from base, the cubitus and 



third anal being missing, with a short detached vein just below the 



apex of the radius, mcdius short and continued by a long detached 



vein beginning behind it and shortly before its apex. Fifth and 



sixth antennal joints slender throughout 2. Genus Genochoi.ax, Pierce. 



I. Genus MYRMECOLAX, Westwood 



Myrmecolax. Westwood, Trans. Ent. Soc. Lond. (2), Vol. 5, pp. 418-420. plate (1861). 



Characters. — Male. — Head transverse, emarginate posteriorly; eyes multiple-facetted with 

 the interspaces conically elevated. Frontal process prominent. Oral cavity subtriangular. Mandibles 

 long, slender, curved and apically acute; maxillae two-jointed, the basal joint short, the palpus long. 

 Antenna? minutely pubescent, sensitive, seven-jointed, with the first two joints short, third laterallv 

 produced into an elongate flabellum ; fourth very small and cylindrical; fifth, sixth and seventh joints 

 elongate, together longer than the flabellum of the third; the fifth and sixth joints subclavate. Prothorax 

 arched forward, longer than mesothorax. Elytra a little longer than the width of the mesothorax, clavate. 

 Metathorax with prasscutum keystone-shape; scuti broad and rather widely separated; scutellum 

 triangular, rounded at apex; postlumbium of different consistency from the other parts, semi-elliptical; 

 postscutellum broad and rather short. Wings having eight primary veins from base. Legs very small; 

 coxa? contiguous; anterior and median trochanters inflated, distant, posterior approximate; posterior 

 femora inflated; tarsi four-jointed, the first largest, all with pulvilli, claws lacking. GSdeagus slender, 

 but slightly arcuate, very strongly and acutely reflexed near apex; apex acute. 



Female unknown. 



Type of genus. — M. nietneri, Westwood. 



Geographical distribution of species. — Parasites of Formicidae. 

 1. M. nietneri. Westwood, Trans. Ent. Soc. Lond. (2), Vol. 5, pp. 418-420, Ceylon, 

 plate (1861). — PI. I , Fig. 2 ; PI. 4, Fig. I 8. 



M. nietneri, Pierce, Bull. U. S. Nat. Mus. no. 66, p. 88, pi. 1, ff. 5, 6 

 (1909); Proc. U. S. Nat.JVIus. Vol. 40, p. 492 (1911). -> 



2. Genus C/ENOCHOLAX, Pierce 



Caenocholax. Pierce, Bull. U. S. Nat. Mus. no. 66, p. 88 (1909). 



Characters. — Male. — Head transverse, considerably wider than thorax; eyes multiple- 

 facetted, large. Oral cavity broadly rounded. .Mandibles elongate, slender, acute. Maxillae with basal 

 joint globular, fleshy, sensitive ; palpus arising from outer side, long and slender. Antennae seven-jointed, 

 sensitive; the first two joints transverse, cylindrical, cupped; third short, laterally produced into a long 

 flabellum; fourth very short; fifth, sixth and seventh elongate, slender. Prothorax and mesothorax 

 transverse. Elytra elongate, clavate. Metathorax very long; praescutum elongate, broadly ogival ; scuti 



