HYMEN OPTERA. iiC) 



thorax very thinly covered with sericeous down ; tlie abdomen 

 with a dense pale golden pubescence ; the mandibles and fiagel- 

 lum ferruginous ; the tarsi have their apical joints obscurely fer- 

 ruginous. Head large, much wider than the thorax, emarginate 

 behind ; the cly])eus with a central longitudinal carina, in a line 

 with which a shghtly impressed line runs ujnvards nearly to the 

 emargination of the vertex. Thorax compressed ^posteriorly. 

 Abdomen : all the segments with a narrow white apical margin. 

 Worker minor. Length 2} lines. — This differs in having the 

 head much narrower and more elongate; the thorax is also more 

 elongate ; otherwise it resembles the large worker. 



Hub. Port Natal. (Coll. R. W. Plant.) 



117. Formica coGX.\TA. B.M. 



Worker major. Length 5.V lines.— Extremely like F. tnucu- 

 lata, which it may be : the antennae and head as in that sj)e- 

 cies ; the legs entirely ferruginous ; the abdomen entirely black ; 

 in other respects the same as in F. maculata. 



Worker minor. — This insect differs from the small worker of 

 F. maculata : the head is of a different form, being narrowed 

 slightly behind the eyes, and is more sharply emarginate behind ; 

 the scale of the peduncle is more elongate and pointed at the 

 apex; the abdomen entirely black, and the legs rqd. Notwith- 

 standing the differences pointed out, this species will probablv 

 prove to be a variety of F. maculata. 



Hab. Port Natal. 



118. Formica Brullei. B.M. 



Formica carinata, Bridle, Hist. Nat. 11. Ca)iar. Zool. ii. 84. 1 ^ . 

 Hab. Canary Islands. 



119. Formica fadricator. B.M. 



Female. Length 5! lines. — Black, smooth and shining: the 

 flagelium, legs, tliorax at the sides, and beneath, the ;ii)ex'of the 

 metathorax and the base of the thorax beneath, ]i,de rufo-testa- 

 ceous. Head subquadrate and emarginate behind , the clypeus 

 subcarinate in the middle, above which in the centre between 

 the antenn;e is a slightly impressed line of the same leimth r.s 

 the carina on eacli side of it ; eyes ovate, ])laced rather high on 

 the sides of the lu-ad. Thorax elongate-ovate. Abdomen ovate ; 

 the scale of the peduncle subovate and entire. 



W(nker major. Length 'S\ lines. — Of a ])aler colour than the 

 female ; the head and the thorax above rufo-piceous ; the legs. 



