POJ.VKHACHIS. 409 



portion of nietanotum flat, broader than long, with on each side a 

 flat, horizontal, lackward-pointnig laminate spine, the two s[)hies 

 curxe inwards like a pair of callipers; apical portion strongly 

 concave, shining, overhung by the metanotal spines ; legs mode- 

 ratelv long, stout ; tibia? cylindrical, without spines. Node of 

 pedicel thick, conical, raised in the middle, above transversely 

 grooved ; abdomen broad and comparatively massive. 



Length, g 3-4 mm. 



Bah. Upper Burma, Maymyo, 3000 ft. {BiiKjham) ; Tenasserim, 

 Kawkarait {Fea). 



A remarkable and aberrant form superficially resembling species 

 of the genus Catalditcus of the Myrmicino'. Emery has further 

 described a race or variety under the name ohtusata. This has the 

 abdomen more coarsely rugulose, and the node of the pedicel more 

 rounded, blunt above. 



491. Polyrhachis jerdoni, Forel Kci/Ja/irshhitf, Katiaforsch. Ges. 

 Zurich. 181t;!, p. 401, ^ ; Juur. Bomb. JS'. H. Soc. viii (189B;, 

 pp. 17 & 28,^2- 



^ . Black, with a bronzy tint ; head and thorax closely and 

 finely punctured, rugulose ; abdomen more minutely punctured ; 

 mandibles, antenna; and legs red ; pubescence almost entirel_y 

 wanting. Head not very convex, broader posteriorly than in 

 front ; clypeus broader than high, medially vertically carinate, 

 its anterior margin transverse : antennal carina) short, w idely 

 separated. Thorax depressed, broad in front, with two widely 

 divergent broad-based spines anteriorly, contracted posteriorly, 

 with two obliquely erect, slightly divergent spines at the posterior 

 lateral angles of the basal portion of the metauotum ; the pro- 

 notum, the mesonotum and the basal portion of the metanotum 

 all much broader than long ; apex of metanotum very steeply 

 sloped, slightly concave ; legs stont, smooth, but opaque, without 

 spines or liairs. jS^ode of pedicel biconvex, broad above, with two 

 widely-spread spines on its lateral angles, shaped to the curve of 

 the abdomen, the upper margin of the node between the two 

 spines obtusely biangular ; abdomen broad, depressed, distinctly 

 submargined anteriorly aiul on the sides. 



$. yiiuilar ; thorax more massive ; thoracic and pedicel spines 

 much shorter ; wings flavo-hyaline. 



Length, ^ 5 -('> : $ 7 ^ mm. 



Uab. Ceylon (I'er/nirg). 



492. Polyrhachis punctillata, Hor/er, Berl. ent. Zeif. vii (18(58 ), p. 152, 

 $ 5: Forvl, Join: lioiith. N.' H. Soc. viii (1898), p. 19, t^ . 

 Polvrhachis piuietillatn, L'ot/cr, var. gmvthiesi, Forel, Jour. lioni'). 

 N. H. Soc. ix (1894;, p. 4oG* 



* Subsequently (Ann. Soc. Ent. Beige, xlvi (URll'), p. 'J"^'.!) ivfen-ed tn 

 race or subspecies, not a variety. 



