342 FOBMICIDA'. 



than broad, convex and medially vertically carinate; antennae 

 rather short, the scape barely extending beyond the top of the 

 nead. Thorax short, stout, convex above, mesonotum slightly 



Fig. 102. Lasiusfiiliyinos/is, $. a. Head. 



gibbous ; metaootum broad posteriorly, its apical face flat. Node 

 of the pedicel subquadrate, broad above, the upper margin gently 

 rounded ; abdomen proportionately shorter and less massive. 



Length, 4-5-5 mm. 



Hob. Recorded from Thana, in Western India. Occurs also in 

 Europe. 



The largest among Indian species. 



393. Lasius alienus, Forster (Formica), Hym. Stud, i (1850), p. 30, 

 d ; f'orel, Jour. Bomb. N. H. Soc. viii (1894), p. 404. 



. Eeddish brown to dark brown, antenna? and legs yellowish 

 brown, thorax light clear brown. All Himalayan specimens differ 

 from the European form in being densely pubescent. Head with- 

 out the mandibles quadrangular, the sides straight, the occiput 

 transverse, as broad as the head in front ; mandibles somewhat 

 long, subtriangular, the masticatory margin oblique, dentate; 

 clypeus as high as broad, convex ; antennae rather long, the scape 

 extending beyond the top of the head by about one-quarter of its 

 length. Thorax short and broad as in L. himalayanus, the 

 posterior face of the metanotum particularly broad. Node of the 

 pedicel and abdomen as in L. Jrimalayamis. 



Length, g 2'5-3'3 mm. 



Hob. N.W. Himalayas to 9000 ft. Of wide range, occurring in 

 Europe and also in America. 



Genus COLOBOPSIS. 



Formica, pt., Spinola, Ins. Li;/, ii (1808), p. 244, ? . 

 Colobopsis, Mayr, Eur. Formicid. 1861, p. 38, 5 . 



Type, C. truncata, Spin., from Europe, 



Range. Both hemispheres. 



$ maj. Characters those of Camponotus, with the following 

 differences : Head more or less cylindrical, anteriorly obliquely 

 and rather sharply truncate from 'just beyond the base of the 

 clypeus, so that the anterior portion of it is bent downwards at an 

 angle : mandibles linear or subtriangular, with the masticatory 

 margin strongly toothed. Thorax somewhat depressed, cylindrical ; 

 legs stout, short, coxae and femora generally broad and massive. 



