BRACHYGLUTINI 131 



ing slightly beyond this line. This triangular extension simple with its apex 

 continuous with simple, strongly declivous front. Vertexal foveae minute, 

 placed on a line passing through the posterior margins of the eyes, and each 

 fovea directly posterior of the antennal base; this pair of vertexal foveae con- 

 nected by a pair of distinct, fine sulci which converge to unite near the anterior 

 fourth of the eyes, i.e. the vertexal sulci are short, and enclose a triangular area 

 of the vertex which is a smaller, more posterior replica of the frontal extension 

 alluded to above, the lateral margin of the vertex being paralleled by the nearest 

 vertexal sulcus. The ventral surface of the head is peculiar: it is fiat, glabrous 

 and medianly simple without median fossa or carina, and even the characteristic 

 basal gular fovea is absent. There is a transversely oblique, short depression 

 each side near the cephalic-cervical constriction; this depression on each side is 

 moderately deep and from an oblique view the apical wall of the depression is 

 strongly carinated so that the ventral surface of the head is deceptively flat 

 from a direct view, but strongly angulate-carinate in reality. Thus the carina 

 forming the wall of the short depression each side forms the transversely-oblique 

 carina so typical of the genus Eupsenina; anteriorly, this carina becomes obso- 

 lete, and is represented by a small tumulus near the postero-ventral angle of 

 each eye. The two transverse depressions noted above probably have their floors 

 attached to the base of the supratentorium, and if so, they are collectively 

 homologous to the gular fovea of other pselaphids. On each side of the ventral 

 surface of the head are three distinct, capitate setae, reminiscent of melbaform 

 euplectines. Anteriorly, the setae are on a line with a conspicuous, arcuate, 

 narrow process which arises near the base of each maxilla, between the eye and 

 the mentum ; this slender process extends anteriorly in a divergent arc nearly to 

 the level of the mandibles in repose, and each process bears six capitate setae. 

 At first sight these arcuate extensions appear to arise from the maxilla, and so 

 lend an allusion to the maxillaiy extension of the Jubinini. 



Maxillae well-developed, the cardo and stipes large, the galea with a well- 

 developed brush of setae. Maxillar>'' palpi four-segmented, first segment 

 minute; second elongate, very slender basally, suddenly inflated apically ; third 

 subtriangular, short, not quite as wide as second, mesial face acute, lateral face 

 convex; fourth longer than second and twice as wide, obliquely truncate at base, 

 subacute at apex, bearing a palpal cone, the mesial face is much more convex 

 than the lateral face. 



Antennae eleven-segmented, equal to the elytra in length (0.43 mm.), con- 

 spicuous; segment I elongate-cylindrical (0.08 mm. long x 0.04 mm. wide) ; II 

 conspicuously triangular (0.06 mm. long x 0.06 mm. wide), with lateral face 

 convex and mesial face acutely produced; III briefly obconical; IV-VII sub- 

 equal, as wide as third, closely articulated, submoniliform, conspicuously nar- 

 rower and shorter than second segment; VIII submoniliform, slightly larger 

 than seventh; IX transverse, larger than eighth; X very transverse, much wider 

 than ninth and nearly as wide as eleventh, but very short and not much longer 

 than ninth, rather disc-shaped from a direct dorsal view; XI exceptionally large 

 (0.2 mm. long x 0.067 mm. wide) , about as wide as second segment and clothed 



