120 FOEM1CID.E. 



beneath with a downward pointing tooth ; mesonotum from above 

 triangular, concave, the sides and front margined by a sharp 

 carina; meso-metanotal suture deep and well-marked; rnetanotum 

 compressed ; basal portion of metanotum horizontal, laterally 

 bordered by carinae; metanotal spines long, slightly divergent; 

 apical portion of metanotum vertically truncate ; legs enormously 

 long and slender, the posterior legs measuring about 12 mm. 

 Pedicel long ; the nodes longer and rounder than in M. brunnea, 

 not so conical and high ; anterior petiole of 1 st node longer than 

 in the above species ; abdomen oval. 



Length, $ 6-6'3 mm. 



Hub. I procured this species once only in Burma, in the Pegu 

 Toma. 



Genus CATAULACUS. 



Formica, pt., Latr. Hist. nat. Fourm. 1802, p. 275, , pi. 12, fig. 75. 

 Cryptocerus, pt., Lepel. Hist. Nat. Hym. i (1836), p. 171. 

 Cataulacus, Smith, Trans. Ent. Soc. ser. 2, ii (1853), p. 225. 



Type, C. taprobana?, Smith, from Ceylon. 



Range. Palsearctic, Ethiopian, and Indo-Malayau regions. 



. Head broad, somewhat flat, very slightly convex above, 

 posteriorly transverse or slightly emarginate, with the posterior 

 lateral angles always prominent, dentate or spinous, anteriorly 

 somewhat narrowed, but the sides of the head for their posterior 

 two-thirds are straight, the anterior third being suddenly curved 

 to the base of the mandibles ; sides of the head deeply grooved 

 to contain the folded antennae, the latter when thus folded being 

 invisible from above ; mandibles somewhat broad from base and 

 armed with 4 or 5 teeth ; the base partially hidden under the 

 lateral laminate angles of the clypeus ; the sides of the head 

 above the mandibles are also laminate and slightly curled up ; 

 clypeus bent downwards at an angle to the front of the head, 

 triangular, and generally emarginate anteriorly in the middle ; 

 frontal area triangular, fairly distinct ; antennal groove placed 

 below the eyes ; the latter large, lateral and frontal, placed about 

 the middle of the head ; antennae short, stout ; scape and flagellum 

 subequal, the latter with 10 joints, the apical three long and incras- 

 sate, forming the club. Thorax broad and a little convex above, 

 constricted posteriorly, the basal portion of the metanotum with 

 spines or at least with obtuse teeth at the lateral angles ; the sides 

 and apex of the thorax more or less vertical and concave ; the 

 margins of the head and thorax denticulate ; legs stout, short, 

 the tibiae flat above and laterally margined ; claws dentate at base. 

 Pedicel with the nodes more or less globose, not or very shortly 

 petiolate, in some species dentate beneath : abdomen broadlv oval, 

 with the front emarginate at the junction of the pedicel. 



$ . Closely resembles the , with the difference in the thorax 

 and abdomen of the sex. The antennae are 11-jointed as in 

 the $ , but the metanotal spines are stouter and proportionately 

 shorter. 



The two species I know well, C. taprolana^ Smith, and C. qranu- 



