POLYRHACHIS. 



403 



Some specimens from Assam have the abdomen and legs of a 

 reddish yellow, and the antenna? and front of the head reddish 

 (var. dichroits, Forel). 



480. Polyrhachis craddocki, sp. nov. 



. Black, thorax and legs dark lake-brown ; head and abdomen 

 very smooth and shining; thorax delicately rugulose, opaque. 



Fig. 138. Polyrhachi 



Node of pedicel. 



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

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

 margin deep, the sides vertical ; pro-meso- and meso-metanotal 

 sutures distinct ; pronotal spines broad at base, pointing forwards 

 and outwards, mesonotal spines nearly vertical, 

 pointing slightly outwards ; metanotal spines 

 short, blunt, parallel, pointing obliquely back- 

 wards ; mesouotum and basal portion of meta- 

 notum transversely concave ; legs comparatively 

 long, femora and tibia? 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, ve'ry convex above. 

 Length, $ 5'5-6'5 mm. 



Hob. Upper Burma, the trans-Salween Shan States (Craddodc). 

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

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

 species the pronotal spines are curved downwards, the apex of the 

 mesonotal spines bent backwards, and the spines on the pedicel 

 diverge widely from their base. 



481. Polyrhachis horni, Emery, Deutsche ent. Zeit. (1901), p. 122, $. 



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

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

 silky shiniug pubescence. Pedicel only above with similar but less 



2 D 2 



Fig. 139. Poh,- 

 rhachis lamelli 

 dens, . 



Node of pedicel. 



