TETRAMORIUM. 185 



long arid much broader than the 1st node ; abdomen convex, oval 

 anteriorly, slightly truncate. 



Length, 3-3 : 3 mm. 



Hal). Western India, Bombay, Kanara (Altken). 



215. Tetramorium scabrum, Mayr, Verh. zool.-bot. Oes. Wien, xxviii 



(1879), p. 672. 



, . Fuscous brown or black, with a reddish-chestnut tint in 

 certain lights on the head and thorax ; mandibles, antennae and legs 

 reddish brown, slightly fuscous at times ; head, thorax aud nodes of 

 the pedicel above somewhat coarsely reticulate, in certain lights 

 longitudinally striate with reticulations between the striae ; abdo- 

 men smooth, polished, shining, with short longitudinal stride at the 

 extreme base above ; pilosity pale yellow, long and abundant, very 

 short and oblique on the scape of the antennae and the tibiae of the 

 legs. Head without the mandibles rectangular, very slightly longer 

 than broad ; mandibles smooth, not striate, the masticatory margin 

 with one or two large teeth at apex, denticulate inwardly ; clypeus 

 broad, convex, with three parallel vertical cariuae down the middle ; 

 antennal cariuae wide apart, prolonged divergently backwards 

 almost to the top of the head, bordering the well-marked antennal 

 groove, which within is sculptured like the rest of the head ; 

 antennae short, the scape falling short of the top of the head by 

 about one-fourth its own length. Thorax as in T. christiei, but 

 the meso-metanotal suture more clearly marked above, deeply 

 indented and wide on the sides of the thorax ; metanotal spines 

 much stouter and longer, pointing obliquely back, divergent and 

 with a slight curve upwards and outwards towards the apex. 

 Pedicel : the 1st node longer than broad, rounded, with a short 

 petiole anteriorly, abruptly and sharply truncate posteriorly ; 2nd 

 node smaller than the 1st, rounded ; abdomen oval. 



Length, $ 3-3'5 mm. 



Hcib. Sikhim (Moller) Ceylon(Green)-., Burma (Fea $-Binc/7iam)- 

 extending to Borneo. Mr. Green was good enough to send me 

 several individuals with a note to the effect that they were found in 

 the hollow of a node of Humboldtia laurifolia. The Indian and 

 Ceylon specimens have been separated as var. subscabrum, Emery, 

 differing from the Bornean type in being smaller with somewhat 

 eebler sculpture. 



216. Tetramorium simillimum, Smith (Myrmica), List Brit. Anim. 



Brit. Mus. pt. 6, Acul. 1851, p. 118, . 



. Head, thorax and pedicel reddish yellow, abdomen clear 

 light brown ; head, thorax and nodes of the pedicel delicately, longi- 

 tudinally striate, the striae fine and regular without reticulations 

 between ; abdomen smooth, polished and shining, with a few short 

 light longitudinal striae at the extreme base ; pilosity somewhat 

 sparse and short. Head rather long and massive, a little broader 

 posteriorly than iu front, the sides convex: mandibles proportionately 



