TYCHINI 275 



male, but occiput and vertex strongly, medianly and longitudinally carinate in 

 both sexes; (2) Eleven-segmented, simple antennae widely separated on the 

 antero-lateral angles of the front; (3) Maxillary palpi simple, four-segmented, 

 elongate and moderate in size; (4) Pronotum wider than long, abruptly nar- 

 rowed in basal fourth; no median and no lateral foveae; a transverse sulcus 

 which receives an oblique accessory sulcus from basal margin each side; (5) 

 Each elytron with entire sutural stria, but lacking basal foveae ; flank with a 

 longitudinal carina for apical third to apical half of elytral length; (6) Six 

 sternites in both sexes; (7) Five visible tergites, the first three laterally mar- 

 gined each side; (8) Posterior coxae only moderately separated by a distance 

 equaling one-half the metasternal length. 



Phybytharsis gambosis new species 



Holotype Male. 1.14 mm. long x 0.60 mm. wide. 



Moderately shining, dark red when mature. Pubescence flavous, moderately 

 abundant, long and bristling. Integument sparsely, lightly punctulate. 



Head one-ninth wider than long with eyes included ; tempora short, as long 

 as eyes but very wide and gradually rounded. Eyes subreniform, central, of 

 about 30 medium-sized facets. Cervicum not carinate. Occiput and vertex bi- 

 sected by a thick, longitudinal median carina which extends to a point opposite 

 anterior third of eyes. Vertex vaulted above eye level. Sides of head anterior of 

 eyes with a deep, glabrous, rounded-triangular incisure. This incisure conspic- 

 uously developed in contrast to the narrow, oblique homologue of Dalmonexus. 

 A pair of minute, shallow vertexal foveae, each fovea nude and placed mesio- 

 posteriad of lateral incisure. Anterior half of vertex, between vertexal foveae 

 and interantennal line, glabrous, simple, declivous. Front very complex: the 

 anterior glabrous vertexal area is entirely separated from the front by a prom- 

 inent cylindrical antennal tubercle on each side, and by an interantennal crest 

 which is abruptly elevated medianly into a high, thin, transverse lamella. Just 

 anterior to this lamella the front is very deeply, transversely excavated, and 

 this wide, deep, short excavation is in turn walled in by the clypeus. The clypeus 

 is equally complex, elevated into a high thin lamella; this clypeal lamella ex- 

 tends from one antennal acetabulum to the other, and medianly is thickened 

 into a triangular, apically setose column, while laterally the walls are very thin 

 and translucent. Labrum simple. Ventral surface of the head uncarinated. 



Maxillary palpi paler, pubescent, four-segmented, first two segments as in 

 Dalmonexus; third quadrate with a slightly convex external, and a straight, 

 shorter internal face, slightly wider than second and one-third as long; fourth 

 one-half wider than third, four times as long, obliquely truncate at base, apically 

 narrowed, with a small palpal cone. 



Antennae eleven-segmented, widely separated at base, perfectly simple; 

 segments as in Dalmonexus. 



Pronotum transverse, apical three-fourths transversely ovate; basal fourth 

 suddenly narrower; these two portions separated by a deep, arcuate, transverse 

 sulcus. This antebasal sulcus becomes broader laterally where it is overhung 



