356 



182. Oligomyrmex asinus, Forel, Rev. Suisse Zool. x (1902), p. 214. 



maj. Eeddish yellow ; the legs, pedicel and abdomen of a 

 paler shade ; head anteriorly obscurely longitudinally striate, 

 very sparsely punctured, the rest smooth, polished and shining ; 

 pilosity pale yellow, fairly plentiful. Head long, about twice 

 as long as broad, not very convex in front, the posterior lateral 

 angles prominent and each furnished with a remarkable spine on the 

 apex; between these spines, viewed from the front, the head appears 

 widely emarginate ; mandibles broad, smooth and shining, fur- 

 nished with 5 teeth ; clypeus prominent in the middle, bicarinate, 



Fig. 63. OUyoiiiyrmcx asinus, 5 raaj. 



but not dentate ; antennae short, the scape barely reaching halfway 

 up the head ; eyes minute, placed very close to the anterior 

 margin of the head. Thorax : the pro-mesonotum remarkably 

 raised, convex, rounded at the sides : the meso-metanotal suture 

 deeply impressed, the thorax constricted and emarginate at the 

 suture ; metanotum flat, submargined and subdentiform pos- 

 teriorly. Pedicel: 1st node broader than long, rounded anteriorly, 

 petiolate ; 2nd node rounded, transverse , abdomen long and 

 massive. 



min. Besembles the maj., but is paler in colour, entirely 

 devoid of eyes and of the remarkable horns on the posterior lateral 

 angles of the head. The pedicel is proportionately shorter, and 

 the abdomen small, not massive. 



5 . Eesembles the maj., but is totally devoid of the horns on 

 the posterior lateral angles of the head. Head short, only a little 

 longer than broad, transverse posteriorly, with a few transverse 

 striae between the ocelli ; a prominent stria or carina connecting 

 the posterior two ocelli. Thorax somewhat long and narrow, 

 narrower than in 0. raja the metanotum posteriorly with two 

 long rounded tubercles. Colour as in the maj. 



Length, $ maj. 2-5-4 ; $ min. 1 : $ 4'5 mm. 



Hal. Bengal (Taylor). 



183. Oligomyrmex rothneyi, Forel. Rev. Suisse Zool x (1902), 

 P- 218, 2. 



$ . Eeddish yellow, the antennae and legs paler yellow, the 

 abdomen slightly brownish ; head, thorax and abdomen shining ; 

 the head, between and over the base of the antennae, finely longi- 

 tudinally striate, posteriorly together with the thorax and pedicel 

 minutely but very sparsely punctured; abdomen smooth and 



