358 Dr. A. Forel, Formicides 
under a login dry loamy soil. When the nest is dis- 
turbed the ants make little effort to defend it, but wander 
about helplessly and rather slowly ; if, however, they get 
on one’s skin they sting severely. I have not found 
larve in the nests. Apparently these ants are nocturnal 
in their habits; during the day they are seldom seen, 
except in very sheltered places, or under stones or logs. 
The males found in one nest took to flight when the 
passages were disturbed, the workers making no attempt 
apparently to stop them. 
(8a). Near Lot 14 Estate (windward), 500 ft.; shady 
place under a log. May. A few are from other situa- 
tions (workers only). 
(3b). Forest, Morne a Garou. Oct. 27th. Formi- 
carium at the root of a tree. The workers did not 
appear in large numbers, but as the passages extended 
under the roots, there were probably many more. Most 
of the males seen were captured. 
(3c). Fitz-Hugh Valley (leeward), 500 ft. Nov. 4th. 
Second growth; under a log, with passages extending 
several inches down. One male. Numerous cocoon- 
like pupe. 
(8d). Wallilobo Valley (leeward) ; near sea-level. Nov. 
Sth. Under a stone; open places. Passages extending 
some inches downward. About fifty ants; one male seen. 
(Dec.). It is quite possible that these ants, found 
under stones, logs, &c., are merely at the outer end of a 
tunnel which communicates with a deep formicarium ; 
in that case the females probably keep to inner cham- 
bers. Males are frequently found with workers and larvee 
under logs, &c., but I have never found any females. 
(Jan.). I have searched vainly, in several hundred 
nests, for the females Is it not possible that the 
‘‘ workers” are really separately developed females ? 
Genre PuatytHyrea, Roger. 
Platythyrea pruinosa, Mayr. (No. 48aa48¢e). 8 3. 
%. La couleur varie du roussatre au brunnoiratre. L. 6, 5 mill. 
La ponctuation grossiére éparse est parfois plus accentuée, parfois 
fort superficielle. Aire frontale et sillon frontal visibles. 
3g. L. 6, 0 mill. Trés semblable 4 l’ouvriére. Pygidium 
armé d’une épine Mandibules grosses, trigones, sans dents. Les 
yeux occupent environ la moitié des cotés de la tte qui a un bord 
