OLIGOMYRMEX. SOLENOPSIS. 157 



polished ; pilosity and pubescence pale yellow, fairly abundant, on 

 the tibiae the hairs are oblique and somewhat dense. Head 

 without the mandibles a little longer than broad, the sides convex, 

 the eyes remarkably prominent, the posterior border not emar- 

 ginate, transverse, and the carina behind the ocelli obscure ; 

 mandibles broad, shining ; clypeus as in 0. asinus $ ; antennae 

 short, the scape not quite reaching up to the anterior ocellus. 

 Thorax narrow, narrower than in 0. asinw, the mesonotum 

 strongly convex from side to side, the rnetanotum bituberculate, 

 the apex seen from above truncate. Pedicel : the 1st node 

 squamiform, somewhat flat above, the 2nd node broader anteriorly 

 than posteriorly, rounded ; abdomen elongate, a little depressed. 



3 . " Antennae 13-jointed ; scape as long as the 2nd joint of 

 the flagellum. Head subrectangular, longer than broad. The 

 eyes occupying more than half the sides. Mandibles very pointed. 

 Clypeus carinate, biemarginate, produced and subacumiuate in the 

 middle anteriorly. Thorax narrow as in the $ , but the tubercles 

 of the metanotum less produced, more rounded. First node of 

 the pedicel low, as broad as long. Exterior genital valves very 

 large, obtuse, broad and rounded. Abdomen narrow and de- 

 pressed. Sculpture and pilosity as in the $ , but the hairs of the 

 tibiae subadjacent. Brownish. Legs and antennae of a dingy 

 yellow. Wings a little tinted with brown. Nervures as in 

 Solenopsis." (ForelS) 

 Length, $ 3-3-5 ; 6 3-3'4 mm. 

 Hab. Recorded from Barrackpore (RotJiney). 



Genus SOLENOPSIS. 



Formica, pt, Lair. Ens. Hist. Fourm. Fr. 1798, p. 46. 

 Myrmica, pt., Latr. Gen. Crust, fy Ins. iv, 1809, p. 131. 

 Atta, pt., Fabr. Syst. Piez. 1804, p. 423. 

 Soleuopsis, Westiu. A. M. N. H. vi (1841), p. 86. 



Type, S. mandibularis, West\v.=Atta fjeminata, Fabr., from 

 America. 



Range. Both hemispheres. 



I/. Head more or less square," posteriorly slightly emarginate, 

 with a medial distinct groove down the front ; mandibles very 

 thick and curved, the masticatory margin blunt, without teeth ; 

 maxillary and labial palpi alike two-jointed * ; clypeus narrow at 

 the sides, in the middle produced back between the antennal 

 carinae to above the base of the antennae, channeled down the 

 middle, the sides of the channel forming a fl-shaped carina, the 

 apices of which on each side project as small acute teeth beyond 

 the anterior margin of the clypeus ; antennal carinae short, wide 

 apart and parallel ; antennae 10-jointed, club of the flagellum 

 formed of the apical two joints, very thick and massive ; eyes 



* In S. ivroughtoni from Bengal the maxillary palpi are only one-jointed. 



