POLYUHACHIS. 



403 



Some specimens from Assam luive the abdomen and legs of a 

 reddish yellow, and the antennae and front of the head reddish 

 (var. dicJtvons, Forel). 



-480. Polyrhachis craddocki, sp. nov. 



^ . Black, thorax and legs dark lake-brown ; lit-ad and abdomen 

 very smooth and shining; thorax delicately riigiilose, opaque. 



Fig. loS. — Toh/rhdchis i-i'ddihicli, ^. 



pedicel. 



Head very convex, much broader posteriorly ttian in front ; clypeus 

 convex, its anterior margin iirched. Thorax compressed, the lateral 

 margin deep, the sides vertical : pro-meso- and meso-metauotal 

 sntnres distinct ; pi'onotai spines broad at base, pointing forwards 

 and outwards, mesonotal spines nearly vertical, 

 pointing slightly outwards ; metanotal spines 

 short, blunt, parallel, pointing obliquely back- 

 wards ; raesonotum and basal portion of meta- 

 notum transversel}' concave : legs comparatively 

 long, femora and tibiae compressed, the tibiae not 

 spinous underneath. Node of pedicel columnar, 

 very highly raised, surmounted by two cylindrical 

 spines which rise vertically and are close 

 together and parallel for three-fourths of their 

 length from base, the apical fourth bent outwards 

 and slightly backwards in the form of a hook ; 

 abdomen short and round, very convex above. 

 Lenijth, ^ 5"5-G'5 mm. 



Hah. Upper Burma, the trans-Salween Shan States (Craddock). 

 This very distinct species is close to P. honcllhfcns. Smith, from 

 China and Japan, but differs in the shape of its spines. In Smith's 

 species the pronotal sjjiDes arc curved downwards, the apex ol' the 

 mesonotal spines bent l)ackwards, and the spines on the pedicel 

 diverge widely from their base. 



481. Polyrhachis horni, Emery, Deutsche eiU. Zeit. (1901), p. 1:^2, ^. 



" ^ . Black, head and abdomen shining, devoid of pubescence, 

 densely but finely punctured. Thorax with thick, light yellow, 

 silkv shining pubescence. Pedicel only above with similar but less 



2d2 



Fig. im.—Poli/- 

 rhachis lamclli 

 dens, ^ . 



Xode of pedicel. 



