;5:i4 roitMiciD.E. 



niaxillarv palpi willi (>. labial with 4 joints, the 4th joint of the 

 ma.xillarv ])alpi a little longer than the otli ; frontal area small, 

 subtriangiilar and distinct; anleinial carinic wide apart, more 

 or less curved outwards, never lauiinate ; anteinite 12-jointed, 

 springing froui just behind the posterior margin of the clypeus ; 

 the scape and tlag(^llum tiliform, the latter not sensibly thickened 

 towards the apex ; eyes placed above the middle line of the head 

 and somewhat to the front, ocelli present ; head viewed from the 

 side strouffly convex in front. Thorax a little narrower than the 

 head, the pro- and mesonotum rounded, convex ; the pro-meso- 

 and meso-metanotal sutures well-marked, the thorax more or less 

 constricted at the latter suture ; legs moderately long and slight, 

 claws simple. Pedicel one-jointed, with an erect squamiform 

 node ; abdomen comparatively short, globose. 



$ . Similar to the ^ , larger; wings ample, the fore wing with 

 one cubital and one discoidal cell. 



(S . Mandibles flat, tiie masticatory margin distinct, ending in 

 one to four or fivi' teeth ; the palpi and clypeus as in the ^ ; the 

 antennal carina) short, divergent posteriorly ; the fi'ontal area as 

 in the ^ ; the antenna) 18-jointed, springing as in the ^ from 

 just behind the posterior margin of the clypeus. Thorax massive, 

 broad in the middle, the mesonotum ample and convex, the 

 scutellum broad and prominent ; wings as in the $ . Node of the 

 pedicel I'ather low, cuneiform and square, above generally emar- 

 ginate ; abdomen above depressed, somewhat Hat, the apical 

 .segments gradually smaller. Pencilli present, outer genital lamina) 

 knife-shaped, inner without appendix. 



IQij to the *Sjj«'iVs. 



a. Auteriov border of clj'peus uot emargiuate. 

 a'. Fuscous or browuisli red, head darker thau 



rest of body. 



rr. Abdomeu opaque, uot shining I\ft(sca, p. 330. 



b'-. .Vbdomeu polished and shining F. f/ayatcs, p. 336. 



h' . Head and thorax clear yellowish red ; ab- 

 domen liglit fuscous brown. 

 a'-. Node of pedicel lightly but distinctly 

 convex in front, flat or concave pos- 

 teriorly F. truncicola, p. 334. 



b'-. Node of pedicel flat or a little convex. 



both anteriorly and posteriorly F. ni/ibarbis, p. :]3~). 



b. .Vnterior border of clypeus emarginate F. saiuiubwa, p. 330. 



382. Formica truncicola, iYy/. Acta Sclennic. ii (2), 1847, p. 907. 9 $ ; 

 Ford, Jour. Bomb. N. H. Soc. viii (1804), p. 402, ^ . 



^ . Head with the mandibles and antenna), thorax, legs and 

 node of pedicel clear liglit or yellowish red, abdomen fuscous brown ; 

 head, thorax and abdomen co\ered with short erect light-red 

 hairs, sparse on the head and thorax, fairly abundant on the 

 abdomen, and a fine miinite pubescence, giving thc> insect a silky 



