80 ronMiciu.K. 



is densely pubescent. Unfortunately 1 have only seen one speci- 

 men which I can refer to this species, and in this the pubescence 

 is not more but less dense than in D. sculptum. 



98. Diacamma sculptum, Jodon (Poui-ra), Madr. Jour. Lit. Sf Set. 



xvii (l.^ol), p. 117, 9. 

 Diiicainnia riijjosum *, Forel (nee Le (hiilL), k D. {j-eoinetiicuiu, 

 Forel (nvc Smith), Jow: Bomb. N. II. Soc. xiii (1900), pp. 318, 

 319, 320, ? . 



g . Black, with an erect, tine, pale scattered pilosity, and beneath 

 it a fairly dense yellow sericeous pubescence. Head rounded 

 posteriorly, a little longer than broad ; mandibles dark castaneous 



red, sparingly punctui-ed and with 

 traces of effaced longitudiiuil 

 striae ; clypeus opaque not striate, 

 with a large rounded tubercle in 

 the middle at base ; the apex of 

 the median lobe rounded ; head 

 and front above the clypeus longi- 

 tudinally rather coarsely striate 

 in the middle, obliquely striate at 

 Fig. A±—Dkao.ama scidptum. the sides and on the inner side of 

 Node of pedicel of g . the orbits of the eyes. Thorax 



anteriorly nearly as wide as the 

 head; the pronotum with one or two longitudinal stria? in the 

 centre surrounded by concentric arched stria? from back to front ; 

 mesouotum distinctly deiined, opaciue, not striate ; the metanotum 

 with elongate looped concentric strite from front to back, often 

 not well defined on the sides; legs rather slender. Node of 

 the pedicel very convex and rounded anteriorl}', flat posteriorly, 

 with somewhat irregular concentric striae, about as long as broad 

 posteriorly, the nodal spines suberect : abdomen rather shoi't and 

 massive, the basal segment above with concentric striae arched 

 from back to front. 

 Length, ^ 8-9 nun. 



Hah. Sikhim (iiyo7/gr) ; Barrackpore, Bengal (i^o^Awc?/); Kanara; 

 Mysore; Malabar, the Nilgiri hills (TFrot«r/7i<ou) : Cochin; Travan- 

 core {Ferguson) ; Ceylon (Yerlnirg). 



* Le Giiillou's description of Ponera ruijosa from Borneo (Ann. Soc. Ent. Fr. 

 X, 1841, p. 318) is not detailed enougli for identification of tlie form of Diatammu 

 he had before him, but according to Messrs. Forel and Emery D. ruc/osum, Le 

 Guill., — D. versicolor. Smith. The type of tliis latter, and also of D. georxe- 

 tricmn, Smith, from Singapore, are in the British Museum Collection. Thej- 

 are quite different from anything I have seen from India, Burma, or Ceylon. 

 Jerdon's I'oneraacidp/a was from Malabar. I identify with it the more robustly 

 built of tlic two forms o^ Diacamma occurring inWestern India. Tliis, the slightly 

 larger f(jrm, is recorded from Mysore, Malabar, Cochin and Travancore, besides 

 other localities in Northern and Eastern India, and from Ceylon. On the 

 contrary, the smaller slighter form which I identify as D. vaguns, Smith, has 

 not in Western India been recorded from any locality further south than 

 Kanara. 



