412, Dr. A. Forel, Formicides 
@. Correspond 4 la description de Roger, mais le métanotum 
a des épines bien plus longues que larges. Thorax petit, abdomen 
grand. Téte faiblement élargie derriére. Second nceud du pédicule 
sans conules latéraux. Métanotum ridé en travers. L. 3, 5 43, 
7 mill. 
f (inédit). L. 848, 2 mill. Mandibules triangulaires, bidentées 
et avec un angle postérieur. Face déclive du métanotum assez 
nettement distincte de la face basale, aussi longue qu’elle et assez 
abrupte. Téte densément striée-ridée, mate, trés finement réticulée- 
ponctuée entre les stries. Métanotum densément réticulé et mat ; 
le reste lisse et luisant. Pilosité des pattes assez dressée et assez 
longue. Entiérement jaune, sauf le vertex et l’occiput qui sont 
bruns. Tache marginale d’un brun foncé; nervures assez pales; 
ailes assez faiblement teintées d’un jaune brunatre. 
Espéce évidemment trés répandue a St. Vincent. 
(86). A common species, generally second growth ; 
open places or forest. Forms large communities (of 
several thousand sometimes), the workers major con- 
stituting from one-fourth to one-third of the whole. 
The formicarium is found in rotten wood, under sod, or 
sometimes under stones or sticks. It consists generally 
of several smoothly-worked passages, which may be 
eight to twelve inches long, and forming an irregular 
network ; at the junctions of the passages are small 
chambers, and of these there may be twenty in a single 
nest. The ants also make arched galleries on the out- 
side of the log containing the formicarium, or, if it is 
under sod, in cavities that are too large for their pur- 
poses ; these galleries resemble those made by termites, 
and it is possible that the ants simply utilise the old 
termite-galleries. Hach community, however large, 
seems to have but one gravid female, and, as she keeps 
to an inner chamber, it is often difficult to find her. 
The workers major also keep to the inner passages and 
chambers. They, as well as the female, are very sluggish ; 
the workers minor much less so. I have not found the 
workers on foliage. Apparently the species is nocturnal; 
it ranges to 3000 ft. 
N.B.—Closely allied to No. 35, and I cannot discrimi- 
nate the workers minor with my lens; but great care 
has been taken to keep specimens from the same nest 
together, 
