APH^XOGASTEB, MESSOK. 277 



trjaiigular, striate at base, the masticatory margin dentate at apex, 

 denticulate above. Thorax narrow, the pronotum convex, the pro- 

 mesonotal suture distiuct ; the mesonotum sloping obliquely back, 

 its anterior margin raised, forming a thick transverse ridge which 

 in some specimeus is emarginate in the middle ; thorax in profile 

 emarginate at the meso-metanotal suture, which is deeply marked ; 

 metanotum rounded from side to side and a little convex longi- 

 tudinally ; the metanotal spines broad at base, short and acute. 

 Legs long, the pilosity on theni yellowish, more dense than on 

 the body and oblique. Pedicel with the nodes as in A. sar/ei, 

 but proportionately a little longer; abdomen broadly oval. 



" 2 • Eesembles the ^ ; the spines long. Head longitudinally, 

 metanotum transversely striate, tlie striae distinct between the 

 spines on the latter. Mesonotum broader than the head. Thorax 

 short. Wings a little darker than in the c5" ." (Forel.) 



" (S . Mandibles very long, the masticatory margin with 5 or 6 

 teeth. Head elongate. Antennae and metanotum as in A. sagei, 

 but the posterior portion of the latter cubical, without teeth 

 behind the impression, only two blunt tubercles. Nodes of the 

 pedicel more raised. Wings subhyaline, with the nervures pale and 

 having two cubital cells. Colour and sculpture of the 5." {Ford.} 



Length, ^ 4-5-5-5 ; $ 7 ; c? 4 mm. 



Hah. North-west Himalayas {SmytJiies 4' Wood-Mason). 



Genus MESSOR. 



Formica, pt., Linn. Syst. Nat. 1:2th ed. i (1767), p. 962, § . 

 Atta, pt., lUiyer, Mcuj.f.his. vi (1807), p. 194. _ 

 Myrmica, pt., Lucas, Lxplor. Sc. Alyerie, Zool. iii (1846), p. 300. 

 Aphfenogaster, pt., Eoyer, Verz. d. Furmicid. (Berl. ent. Zeit.) 1863, 



p. 29: 

 Messor, Forel, Ann. 80c. Ent. Bi-Uje, sxxiv (1890), C. It. p. Ixviii. 



Type, M. harharns, Linn., from South Europe 



Bancjc. Both hemipheres. 



^ max. Head without the mandibles square, the occiput 

 transverse, slightly emarginate, as broad as the anterior margin ; 

 mandibles very massive, the outer margin strongly curved, the 

 masticatory margin dentate, the teeth often obsolete, the inner 

 margin very thick, concave above ; clypeus flat, only a litUe 

 convex in the middle, produced back between the bases of the 

 antennae, the anterior margin transverse or waved; antennal and 

 clypeal hollows confluent ; antennal carinae short, wide apart, 

 parallel; antenna^ 12-jointed, iiliform, with no distinct club; 

 joints 1-10 of tlie flagellum subequal. the apical joint slightly the 

 longest ; maxillary palpi 4- or 5-, labial 3-jointed ; eyes somewhat 

 small, placed about the middle of the sides of the head; ocelli 

 absent. Thorax narrow er than the head but massive, the pronotum 

 rounded in front ; the mesonotum raised anteriorly above the leve 

 of the pronotum, posteriorly steeply sloped, with a transverse 

 impression ; pro-mesonotal suture distinct ; meso-metanotal suture 



