MOOMOBIUM. 208 



$ . The only $ 1 have of this species is ergatoid, closely resem- 

 bling the , but larger and darker, the abdomen also minutely and 

 densely reticulate, rugulose and subopaque. Head, thorax and 

 pedicel dark ferruginous brown ; abdomen black, around the base 

 the same colour as the thorax : head from the front very nearly 

 square, the posterior margin straight and transverse, the sides 

 straight, not convex, the posterior lateral angles a little prominent, 

 very nearly forming right angles ; mandibles broader than in the g , 

 the masticatory margin dentate ; clypeus and antennae as in the $ . 

 Thorax : the posterior half of the pronotum forming part of the 

 dorsurn ; the mesonotum long, oval and slightly convex; the meta- 

 uotum grooved down the middle, concave from side to side, with 

 the sides coming to a moderately sharp edge, the concavity sloping 

 to the apex of the metanotum. Wings entirely wanting. Pedicel 

 long, the 1st node cuneiform but slightly broad and rounded above ; 

 2nd node from above nearly quadrate, broader than the 1st; abdo- 

 men massive, elongate, with the sides parallel, anteriorly slightly 

 emarginate. 



Length, $ 2'5-3 ; $ 4-4'5 mm. 



Bab. Throughout our limits, and spread over the tropical regions 

 of both hemispheres. 



232. Monomorium longi, Ford, Rev. Sulsse Zool. x (1902), p. 211. 



. Dull chestnut-brown, the mandibles, antennae and legs a 

 shade paler ; head, thorax and nodes of pedicel finely and densely 

 rugulose, opaque ; abdomen smooth and shining ; pilosity almost 

 entirely wanting; antennae and tibiae of the legs with an oblique 

 short pubescence. Head from the front rectangular with the 

 angles rounded, longer than broad; mandibles opaque, finely 

 sculptured ; clypeus raised in the middle, the carinrc nearly obso- 

 lete ; antennae long, the scape reaching beyond the top of the head : 

 eyes very small, placed a little in front of the middle on the side 

 of the head. Thorax long, the pro-mesonotum very convex, meso- 

 metanotal suture well marked, the thorax emarginate at the suture ; 

 metathorax laterally compressed ; the metanotum rectangular, sub- 

 margined at base, sloping to the meso-metanotal suture. Pedicel : 

 the 1st node squarniforra, anteriorly with a long petiole, a little 

 attenuate and rounded at the apex ; 2nd node globose, broader 

 than long, seen from above broader than the 1st node ; abdomen 

 elongate, oval. 



Lenyth, g 2-5 to nearly 3 mm. 



Hob. Kecorded so far only from Assam (Long). 



233. Monomorium schurri, Ford, Rev. Suwe Zool x (1902), p. '212. 

 $ . Dark chestnut-brown, almost dark brown, the flagellum ot 



the antennae (especially at base), the 2nd node of the Hji "d 

 the articulations of the abdominal segments a sort of dull pale 

 yellow; head, thorax and node of pedicel very finely rugulose, 

 having a dull opaque appearance, abdomen smooth and shim 



