B52 Dr. A. Forel, Formicides 
Genre Dorymyruex, Mayr. 
Dorymyrmex pyramicus, Roger (No. 52a a 52¢). 8 eb d. 
(52). Pretty common on the windward side, and near 
the southern end of the island; above the seashore, or 
on slopes near it. Rarely on the leeward side. The 
formicarium is generally in sandy soil, where the sand 
is supported by roots of grass, &c. It is without shelter, 
opening on the surface of the ground by a small perpen- 
dicular tunnel; about this there is generally a small 
mound of loose sand, &c., not over an inch high, and 
four inches in diameter. The nest proper is about a foot 
below the surface, and probably goes deeper, as I have 
not yet obtained the female; it appears to consist of a 
few passages, not more than half an inch in diameter, 
horizontal, or nearly so, and without larger chambers. 
In these passages I have found larve and males with the 
workers. The communities apparently are small, having 
one or two hundred workers; but several tunnels are 
generally found near each other, and these may belong 
to a common, larger, and deeper nest. The workers and 
males are active ; the latter do not fly when the nest is 
opened, so far as I have observed. Workers are some- 
times found on bushes near the seashore. 
(52a). Near Brighton Estate (southern end of the 
island). Noy. 17th. Dry hill-sides, below 300 ft., over- 
looking flats by the sea; in roads, scrubby growth, 
rather hard ground; at the mouths of perpendicular 
tunnels. 
(52b). Not noted; apparently an immature specimen 
of this species. 
(52c). Leeward; seashore thickets at Wallibou. Oct. 
8th. Beaten from bushes. 
(52d). Windward; seashore, at back of the open sands; 
Grand Sable Estate. Jan. 3rd. From two nests in 
sandy ground, supported by roots. 
(52e). Sandy, open valley of the Dry River ; windward, 
near the sea. Jan. 2nd. From several nests, as de- 
scribed above. 
Genre Tapinoma, Foerst. 
Tapinoma melanocephalum, Fab. (No. 16a). ¥% et 2. 
Espece cosmopolite des tropiques. 
