CAMPONOTUS. 369 



430. Camponotus gigas, Latr. (Formica), Hint. Nat. Fourm. (1802), 



p. 10o, $ , pi. 2, tig. 3G ; Forel, Jour. Bomb. N. H. Soc. vii (1892), 

 p. 225, . 



$ maj. Head, thorax, legs and node of pedicel pitch-black, 

 apical joints of the tarsi and abdomen castaneous brown or red, 

 'the basal two segments of the latter shaded with fuscous brown ; 

 head nearly devoid of pubescence ; thorax and abdomen covered 

 rather sparsely with erect brown hairs. Head comparatively very 

 large, subtriangular, the sides straight, the occiput deeply em ar- 

 ginate, lateral occipital angles rounded but remarkably prominent ; 

 mandibles elongate, toothed on the inner as well as on the 

 masticatory margin ; clypeus comparatively narrow, with a medial 

 vertical carina and a very prominent median lobe, the anterior 

 margin of which is subeinarginate ; scape of antenna? cylindrical. 

 Thorax comparatively narrow ; legs very long, tibia? compressed 

 and longitudinally channeled. Node of pedicel conical, very 

 convex anteriorly ; abdomen broad. 



min. Similar ; head rounded posteriorly, flagellum of the 

 antenna?, coxa? and femora of the legs and the abdomen cas- 

 taneous. 



$ . Similar to maj. ; bead smaller, narrower and less deeply 

 emarginate posteriorly ; wings hyaline yellow, brown along the 

 costal margin. Node of pedicel thick, transverse, notched above. 



c? . Similar to the g min. ; head proportionately very small, the 

 cheeks concave, head behind the occiput strongly constricted. 

 Entirely of a dark brownish black, coxae and femora of the legs 

 testaceous yellow. 



Length, $ maj. 27-30 ; min. 13-18 ; $ 28-30 ; rf 19 mm. 



Hob. The Malay Peninsula, Borneo, Sumatra, creeping into the 

 extreme south of Tenasserim. Mergui district (Bine/ham). 



431. Camponotus marginatus, Latr. (Formica), Ess. Hist. Fourm. 



Fr. (1798), p. 35, $ 9; Forel (var. himalayanus), Jour. Bomb. 

 N. H. Soc. vii (1893), p. 431, $ . 



maj. Head and thorax black, head slightly polished and 

 shining, thorax opaque, legs brownish red ; abdomen dark cas- 

 taneous brown, polished and shining ; pubescence sparse, erect, 

 more plentiful on the abdomen. Head subtriangular, very convex 

 in front; mandibles short, very massive, striate and deeply punc- 

 tured ; clvpeus comparatively small, sublobed, not carinate, its 

 anterior margin slightly denticulate. Thorax broad in front, 

 abruptly truncate posteriorly ; legs stout, tibiae slightly flattened. 

 Node of pedicel broad, oval, slightly biconvex and rounded above ; 

 abdomen broad and massive. 



$ min. Similar, smaller, more pubescent ; head not constricted 

 or attenuated posteriorly ; mandibles with 6 teeth. 



$ . Very similar to the $ maj. ; head slightly narrower. Node 

 of pedicel broader, notched in the middle above ; abdomen very 

 much longer and more massive. 



TOL. II. 2 B 



