POLYBHACHIS. 409 



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

 flat, horizontal, backward-pointing laminate spine, the two spines 

 curve inwards like a pair of callipers ; apical portion strongly 

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

 rately long, stout ; tibiae cylindrical, without spines. Node of 

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

 grooved ; abdomen broad and comparatively massive. 



Length, 3-4 mm. 



Hob. Upper Burma, Maymyo, 3000 ft. (Bingham) ; Tenasserim, 

 Kawkarait (Fea). 



A remarkable aud aberrant form superficially resembling species 

 of the genus Catalaucus of the Myrmicince. Emery has further 

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

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

 rounded, blunt above. 



491. Polyrhacbis jerdoni, Forel, Neujahrsbhitt, Xatwforsch. Ges. 

 Zurich, 1893, p. 491, ; Jour. Bomb. X. H. Soc. viii (1893), 

 pp. 17&28, $?. 



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

 finely punctured, rugulose ; abdomen more minutely punctured ; 

 mandibles, antenna? and legs red ; pubescence almost entirely 

 wanting. Head not very convex, broader posteriorly than in 

 front; clypeus broader than high, medially vertically carinate, 

 its anterior margin transverse : antennal carinse short, widely 

 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 metanotum ; the pro- 

 notum, the mesonotum and the basal portion of the metanotum 

 all much broader than long ; apex of raetanotum very steeply 

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

 spines or hairs. Node 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 and on the sides. 



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

 much shorter ; wings flavo-hyaline. 



Length, $ 5-6 ; $ 7-8 mm. 



Hab. Ceylon (Yerbury). 



492. Polyrhachis punctillata, Roger, Berl. ent. Zeit. vii (180;?). p. 1<>2, 



$ $: Ford, Jour. Bomb. N.' H. Soc. viii (1893), p. 19, $. 

 Polvrhachis punctillata, Royer. var. emythiesi, Forel, Jotn: liomb. 

 N. H. Soc. ix (1894), p. 456*. 



* Subsequently (Ann. Soc. Ent. Beige, xlvi (1902), p. 289) referral t.. MS a 

 race or subspecies, not a variety. 



