TKIGOXOGASTER. 285 



Genus TRIGONOGASTER. 

 Trigonogaster, Forel, Ann. Soc. Ent. BeJg. xxxiv (1890), C. It. p. cviii. 



Type, T. recurvispinosa, Forel. 



Range. Indo-Malayan region. 



. Elongate, narrow. Head viewed from the side truncate 

 anteriorly, longer than broad ; mandibles narrow, the masticatory 

 margin armed with 4 teeth; maxillary palpi 5-, labial palpi 3-jointed; 

 clypeus vertical, strongly vaulted and convex, forming an angle 

 with the portion of the front above it, and furnished with two longi- 

 tudinal carinae ; the antennal carinse short, prominent ; antennae 

 11-jointed, the last three joints incrassate, forming a club as in 

 the genus Phidole ; eyes lateral and a little to the front. Thorax 

 elongate, broad anteriorly, the pro- and mesonotum forming a 

 single convexity ; the pro-mesonotal suture visible as a line ; the 

 mefcanotum depressed, laterally slightly compressed ; the meso- 

 metaaotal suture very distinct, the basal portion of the metanotum 

 armed posteriorly with two strong recurved spines, the apical 

 portion oblique, nearly vertical ; legs moderately slender and long. 

 Pedicel with the two nodes close together ; the 1st node with a 

 long thick pedicel anteriorly, and squainiform, somewhat conical, 

 above ; the 2nd node broader than the 1st node and broader than 

 long, rounded in front, transverse posteriorly, articulated to the 

 abdomen by the whole of its posterior face: abdomen viewed 

 from the side triangular, flat above, the apex of the triangle 

 below. 



324. Trigonogaster recurvispinosa, Forel, Ann. Soc. Ent. Bely. xxxiv 

 (1890), C. -R. p. cix. 



. Head and thorax tawny-olive ; abdomen dull yellowish. 

 Head, thorax and abdomen extremely finely and closely punctured, 

 opaque ; pilosity very sparse, only a few scattered pale erect hairs 



Fig. 85.Trigo>togaster recurvispinosa, g . 



on the front and on the abdomen. Head rectangular, widely and 

 very slightly emargiuate posteriorly ; mandibles striate, slightly 

 shining. For the rest the characters of the genus. 



Length, g 2 mm. 



Hab. Western India (WrougJtion). 



