484 



Larvae of Membracis. 



as in the workers, but the abdomen is so much dilated as to reach one and a 

 half times the breadth of the head. 



The head, tegulae, scutellum, and abdomen, in all three kinds of individuals, 

 are ferruginous, smooth and shining, the posterior margins of the vertex, of the 

 scutellum and of the last segments of the abdomen have a black pubescence ; the 



Fig. i. Cagafogo, worker (side view). 



Fig. 2. Cagafogo, male. 



rest of the thorax, together with the legs, is black with black pubescence; the 

 antennae black, the greatest part (9) or the whole ($} of the scape rufo-piceous, 

 the flagellum fuscous beneath. The wings by far exceed the abdomen ; the basal 

 portion and radical cell of the anterior wings dark fuscous; their apical portion 



Fig. 3. Cagafogo, queen. 



Fig. 4. Cagafogo, queen (from beneath). 



and the posterior wings subhyaline; the stronger nervures brown, the feeblest 

 ones pale ferruginous; no cubital cell at all. The mandibles with two teeth at 

 their apex. The tibiae triangular, their outside pubescent from the base to the 

 middle, towards the apex slightly excavated, smooth, shining, and naked. The 

 whole body destitute of feather-like hairs. The unguiculae of the males are, in 

 this as in other Trigona and Melipona species, two-cleft ; whilst those of the workers 

 and females are simple. The queen, besides her larger size and the much dilated 

 abdomen, differs from the workers by the colour of the head being somewhat 



