de UV Antille St. Vincent. 363 
(46). Pretty common. Communities of from five to 
thirty or forty are met with. The formicarium is made 
in rather dry and hard rotten wood; it consists of a 
single chamber, or of several in a row, with short com- 
municating passages; the chambers about 1 in. long in 
the direction of the wood-fibre, 4 in. wide, and + in. high. 
These chambers may be under the bark, but are gene- 
rally pretty deep in the log or stump. The ants are 
moderately active. When the nest is disturbed they are 
not at all pugnacious, but try to conceal themselves and 
their pup in crevices. The males, generally found in 
outer chambers, take flight when the nest is opened. 
Formicarium sometimes under sod. 
(46a). Near Palmyra Estate (leeward), 1000 ft. Nov. 
8rd. Shady place, in rotten wood. 
(46 b). Bowwood Valley, near Kingstown, Oct. 15th, 
800 ft. ; shady place, in rotten wood. 
(46 c). Richmond Estate (leeward) ; open valley near 
sea-level. Oct. 81st. In decaying wood. 
(46d). Old Botanical Garden, Kingstown, 500 ft. Oct. 
22nd. Shady place, in rotten wood. 
(46e). Fitz-Hugh Valley (leeward), 500 ft.; shady 
place, in rotten wood. Nov. 4th. 
(46 /). Various situations, in rotten wood. 
(464). Damp forest near stream above Chateaubelais 
(leeward), 250 ft. Jan. 26th. Scattered, under sod on 
ayock. The formicarium was destroyed in pulling up 
the sod. 
2. Ponera opaciceps, Mayr. (No. 41g, bis). 3%. 
Dans le No. 41g, deux espéces se trouvaient mélées: la P. 
trigona et la P. opaciceps. M. H. H. Smith ayant trouvé les 
exemplaires de 41 g en diverses localités, le fait n’a rien d’étonnant. 
Les exemplaires de St. Vincent sont identiques A ceux du Brésil. 
3. Ponera trigona, Mayr. (No. 41f, 41j et 419). 8 ¢@. 
Var. opacior, n.v. 
Les exemplaires de St. Vincent différent des types de Mayr, du 
Brésil, par leur ponctuation plus forte et plus serrée, surtout sur la 
téte, ce qui les rend moins luisants (subopaques), par leurs antennes 
et leurs pattes qui sont d’un jaune roussitre vif, trés tranché, et par 
les cotés de la téte qui sont Iégérement moins convexes. L’écaille 
parait aussi légérement moins amincie au sommet et plutét un 
TRANS. ENT. SOC. LOND. 1893.—paRriv. (pEC.) 20 
