HYMENOPTERA. 43 



of the clypeus entire. Thorax opake, and flattened above, com- 

 pressed posteriorly. Abdomen ovate and shining ; the scale of 

 the peduncle subovate, pointed in the middle above. 



Hab. Brazil (Villa Nova on the Amazons). (Coll. H. W. Bates.) 



144. FORMICA DECORA. 



Female. Length 3^ lines. Black : the abdomen with a cream- 

 coloured spot on each side of the second and third segments at 

 their base. Head a little wider than the thorax, oblong, sub- 

 quadrate; eyes rather large, ovate; mandibles ferruginous; 

 antennae dark rufo-fuscous. Thorax narrow, elongate-ovate; 

 wings wanting ; the apex of the coxae and trochanters pale tes- 

 taceous yellow ; the apical joints of the tarsi ferruginous. Abdo- 

 men elongate-ovate; the pale spots at the base of the second 

 and third segments subtriangular, the apical margins of the seg- 

 ments thinly ciliated with glittering white hairs. 



Hab. Brazil. (Coll. D. Swainson, Esq.) 



145. FORMICA BLANDA. B.M. 



Worker. Length 2-2 lines. The head anteriorly, the an- 

 tenna?, thorax, legs, scale of the peduncle and base of the abdo- 

 men ferruginous, and thinly covered with a changeable silvery 

 pile ; the disk of the thorax and the head with a few scattered 

 long pale hairs ; the head wider than the thorax, the latter com- 

 pressed posteriorly. Abdomen black, densely covered with 

 pale golden pubescence, and sprinkled with long pale hairs ; the 

 scale of the peduncle incrassate, forming a small obtuse node. 



Hab. Brazil (Santarem). (Coll. H. W. Bates.) 



146. FORMICA RUFIPES. B.M. 



Formica rufipes, Fabr. Syst. Ent. 391. 4 ; Ent. Syst. ii. 350. 4 ; 

 Syst. Piez. 398. 7, and Mus. Dom. Banks. ( $ major). 

 Oliv. Encycl. Meth. vi. 491. 

 Latr. Hist. Nat. Fourm. 110. 

 St. Farg. Hym. i. 215. 20. 



Hab. Brazil. 



The typical specimen of this species in the Banksian Collec- 

 tion is the " worker major ;" the small worker differs in size as 

 well as form. 



Worker major. Length 5J lines. Black : opake and thinly 

 sprinkled with ferruginous hairs ; head cordate, twice the width 

 of the thorax, the mandibles armed with six stout teeth ; the 



