188 FORMICID^. 



219. Tetramorium tortuosum, 72()j7e;-, i?^W/». ent. Zdt. vii (isns), 



p. 181. 



5J . Chestnut-red, the abdomen brown, paling posteriorly to 

 yellowish brown, mandibles yellowish brown, legs lighter chestnut- 

 red : head and thorax longitudinally striate-reticulate and rugose, 

 the nodes oF the pedicel and the abdomen smooth, ])olislied, shining ; 

 pilosity f;iirly abundant and long, the hairs obtuse at apex. Head 

 without the mandibles elongate, trapezoidal, longer than broad and 

 broader posteriorly than in front; mandibles faintly longitudinally 

 striate, the masticatory margin coni])aratively broad, dentate; 

 clypeus very slightly convex, almost flat, the anterior margin 

 transverse, posterior margin well defined between the bases of the 

 antenna;, arched ; antennal cariuae produced posteriorly almost to 

 the top of the head, divergent ; no antennal furrow, but the space 

 on which the scape rests with somewhat finer sculpture than on 

 the rest of the head ; antennae comparatively stout and long, the 

 scape extending almost up to the top of the head ; eyes large, placed 

 about the middle of the sides of the head. Thorax elongate, broad 

 anteriorly ; the pronotum in front arched, the anterior lateral angles 

 fairly well-marked but not prominent ; meso- and metanotum 

 narrowing posteriorly, the sutures almost obsolete, the spines on 

 the posterior lateral angles of basal portion of metanotum slender, 

 acute, pointing divergently backwards. Pedicel : the 1st node 

 longer than broad, petiolate anteriorly ; the 2nd node transverse, 

 broader than long ; abdomen oval. 



Length, ^ '6-6' o mm. 



Hah. Recorded so far only from Ceylon, and var. helli, Forel, 

 from Western India, Kanara (Bell). 



The latter differs from the Ceylon specimens in having well- 

 marked antennal furrows, and the nodes of the pedicel rugose on 

 the sides. 



220, Tetramorium smithi. Mayr. Vc-rh. zool.-bot. Ges. Wien. xxviii 



(1879), p. 67.% 5. * ' 



^ . Head, thorax and pedicel ferruginous, the latter two a little 

 bi'ighter in colour than the head, abdomen brown, antennie and legs 

 brighter and paler than the thorax; head and thorax longitudinally 

 striate and rugose, with some reticulations between the striae; nodes 

 of the pedicel above and the abdomen smooth and shining ; 

 pilosity pale yellow, very sparse, oblique on the scape of the 

 antennae and tibiae of the legs. Head, without the mandibles, 

 longer than broad, broader posteriorly than in front, the cheeks 

 very convex ; mandibles rather large, smooth, shining, not striate ; 

 clypeus convex, vertically obscurely tricarinate, its anterior margin 

 transverse ; antennal carina^ long, produced back, slightly diver- 

 gent, antennal furro\A"s well-marked ; antennae short, the scape not 

 nearly extending to the top of the head ; eyes large, round, placed 

 about the middle of the sides of the head. Thorax broad, anteriorly 

 as broad as the head, somewhat flat, obscurely margined at the 



