APPENDIX. 895 
mineuse, the effacée of his monograph, which is 
only a variely. These ants, like the Ash-coloured 
Ants, tear the cocoons spun by the larva, as soon 
as the latter have undergone their transform- 
ation. 
Tue Rurescent ANT, 
(I. Rufescens, Lat.) 
Fourth family. Fourmi ambigue : thus called, 
because it holds an intermediate rank between two 
other families. 
W.—Of a pale red. Mandibles, slender, ar- 
cuate, scarcely denticulate. Ocelli, three, 
small, Zhoraz, elevated posteriorly. 
Length, three lines. 
The body is elongate, of a pale red, 
nearly smooth, having only a few hairs 
upon the head, scale, and abdomen. The 
antenn@ are inserted near the mouth, the 
part between them is not elevated, as in 
the ants of the former families (like the pre- 
ceding.) The head is rather large, nearly 
quadrate, rounded posteriorly. The man- 
dibles are arched, slender, scarcely den- 
ticulate, terminating in a point, much re- 
sembling those of the Tipu1z. This cha- 
racter is unique in the indigenous ants. 
The middle of the forehead bears a small 
