DOLICHODERUS. — lEIDOMYRMEX. 297 



thick at base, transverse above ; abdomen somewhat elongately 

 oval, smooth and shining, vei-y convex above. 



Lenriih^ ^ 3*5-4 mm. 



Hub. Sikliim, up to 7000 ft. (2Joller) • Burma, Tenasserim 

 {Fea, Biugh(im), and Siam {Sirjy). 



Var. ni(/rtc,ans, Emery, is very dark fuscous, almost black. 

 Yar. glahripts, Forel, is longer, more slender, and has the legs 

 of a light yellowish rod and comparatively smooth, without 

 pilosity. 



337. Dolichoderus mo?gridgei, Forel, J. A. S. B. Iv, 2 (188G), p. 243, 

 ^ ; id. Jour. Bomb. N. H. Soc. ix ( 1 895), p. 4G3, $ . 



^ . Brownish red, uniform, the mandibles, antennae and legs a 

 shade lighter. Head and abdomen shining, hut very minutely 

 and closely reticulate-punctate, sparsely pilose and pubescent ; 

 thorax more coarsely punctate and pilose, somewhat op.ique. 

 Head oval, as broad posteriorly as in front ; the cheeks and front 

 very convex ; mandibles triangular, the outer and masticatory 

 margins longer proportionately than in any other Indian species 

 of the genus; clypeus and antennte as in D. fea?., only the scape 

 is proportionately longer and extends further beyond the top of 

 the head. Thorax short and bi'oad ; the pronotum Hat, margiued 

 anterii)rly ; the mesonotum much raised and not very distinctly 

 longitudinally sulcate ; the meso-metanotal eraargination very 

 deeply marked, the truncate apical portion of ihe metanotum 

 long and fla^, almost vertical ; legs moderately long, robust, and 

 sparsely pilose. Node of the pedicel inclined to the Iroiit, slightly 

 convex anteriorly, flat posteriorly, its upper margin rounded ; 

 abdomen broadly oval, not very convex above. 



Lewfth., ^ 2 3-2 5 mm. 



Hah. Sikhun at 40U0 ft. {Moller) ; Assam (Lonf/). 



I am a little in doubt whether I have rightly identified the 

 above species. 



Genus IRIDOMYRMEX. 



Formica, pt.. Smitli, Jour. Linn. Soc.m (1858), p. 137, ^ . 

 Acantholepis, pt., Lotone, Entomnlotjist, ii (i860), p. 332, $ . 

 Hypocluica, pt,., Ma/yr, Verh. zaol.-'bot. Ges. Wien, xx (1870), p.95!>. 

 Iridomyrmex, Mayr, Verh. zool.-bot. Ges. Wien, xii (1862), p. 702. 



Type, /. delectus. Smith, from Australia. 



Range. Both hemispheres. 



^ . Head triangular ; mandibles very broad at the masticatory 

 margin, armed with 7-8 teeth; clypeus trianjiular, slightly convex, 

 posteriorly extending slightly up between the antennal carina), 

 anteriorly transverse; antennal carina) wide apart, short, parallel ; 

 antennae long, the scnpe and fl;igellum both sli^jhtly cla\ate, the 

 former extending beyond the top of the head ; frontal area indis- 

 tinct ; eyes of moderate size, placed somewhat forward, about the 

 transverse middle line of the head. Thorax slender, the pro- and 



