FOEMICA. PSEUDOLASIUS. 337 



triangular, slightly biconvex, very broad and transverse above, the 

 lateral angles rounded; abdomen depressed, broad, as broad as 

 long. 



Fig. 100. Formica sanguined, . . Head ; b. Maxillary palpus. 



. Very similar to the $ but larger, the head, thorax and 

 abdomen a lighter brighter yellow, the abdomen slightly darker, 

 in greater contrast to the colour of the head and thorax. ' 



Lenr/th, $ 6-7 : ? 9-9-5 mm. 



Hob. Lahoul, frontier of Tibet (Sage). Northern Europe, Asia 

 and America. 



I have seen no <S of this species from India. 



Genus PSEUDOLASIUS. 



Formica, pt., Smith, Jour. Linn. Soc. \ (18(31), p. 68, $ . 

 Pseudolaaius, Emery, Ann. Mm. Civ. Gen. xxiv (1886), p. 244. 



Type, P. familiarig, Smith, originally described from the Celebes. 



Range. Indo-Malayan region. 



maj. Mandibles powerful, subtriangular, armed with four 

 teeth, the innermost broad, bimucroriate, the others acute ; clypeus 

 more than twice as broad as high, convex in the middle, depressed 

 at the sides, its anterior margin transverse ; frontal area not clearly 

 defined, clypeal and antennal hollows confluent ; antennal carinae 

 wide apart, rather short, parallel ; antennae 12-jointed, somewhat 

 short, the scape stout, the flagellum gradually thickened to the 

 apex ; eyes small, ocelli absent ; head massive, square, deeply 

 emarginate posteriorly. Thorax short, stout, not so broad as 

 the head, the pronotum rounded, convex ; viewed from above 

 the mesonotum is circular, the metanotum obliquely truncate, the 

 basal portion much shorter than the oblique apical portion ; 

 thoracic sutures distinct ; legs moderately long and stout. Node 

 of the pedicel quadrangular, slightly emarginate above, posteriorly 

 fitting into a hollow in the abdomen ; abdomen short, broad and 

 convex, somewhat gibbous in front. 



$ min. Much smaller, very similar ; mandibles with the masti- 

 catory margin more oblique; clypeus convex, anteriorly transverse ; 

 clypeal and antennal hollows not so clearly confluent as in the 



TOL. II. 7' 



