304 NEOTROPICAL PSELAPHIDAE 



scabroid to asperate. Pubescence long, thick-shafted, appressed, and golden in 

 color on the body ; anterior femora, anterior tibiae, vertexal, pronotal, elytral 

 and sternal foveae, sides of head anterior and posterior of eyes, sides of pro- 

 notum and apical elytral margin densely pubescent. 



Head elongate-subtriangular, with simple rounded tempora as long as eyes ; 

 eyes prominent, composed of 50 large facets, placed just behind the middle of 

 head and appearing to lie in a bed of pubescence. Vertex highest near occiput, 

 simple, sloping evenly to inter-antennal line; a pair of small vertexal foveae on 

 a line through posterior ocular margins ; sides of head anterior of eyes gradually 

 concave to form a median antennal tubercle, this latter medianly longitudinally 

 sulcate, forming a bilobed front, to a point on a line through anterior ocular 

 margins. Clypeus deeply recessed beneath overhanging frontal antennal tu- 

 bercle, simple, and erected near apex into a semicircular carina. Labrum 

 minutely granulose. Ventral surface of head simple. 



Maxillary palpi four-segmented, as long as distal antennal segment; first 

 segment short, oblong; second four times as long as first, as wide as first for basal 

 half, then slightly wider and arcuate in apical half but not inflated, with a 

 rounded apex; third distinctly wider and half as long as second, asymmetrically 

 ovoidal; fourth as long as first three united, twice as wide as third, with the ex- 

 ternal face nearly straight, and the internal face broadly convex to narrow but 

 rounded apex. This distal segment is conspicuous because it is clothed in short, 

 stiff, apically-directed, spike-like setae. 



Antennae closely articulated, approximate, eleven-segmented, long (1.6 

 mm.), being two-thirds the body length, with the first eight antennomeres 

 (0.8 mm.) as long united as the last three (0.8 mm.) united. Segment I elongate- 

 cylindrical; II as wide but shorter and obconical, with the articular surface be- 

 tween these two being obvious (as in Attapseniini) in contrast to the other 

 articulations; III- VIII as wide as second; third very short and transverse, disc- 

 shaped; fourth one-half longer, transverse and drum-shaped; fifth to eighth 

 gradually longer, from quadrate to obconical; club of the last three segments, 

 inconspicuous but in reality strongly formed; IX very elongate-cylindrical, not 

 wider than eighth; X very elongate-subobconical ; XI very elongate and slightly 

 wider, apically rounded. The antennal club has a notable ornamentation: the 

 integument is studded with small, separate asperities which are so arranged in 

 lines that these segments appear to have the surface separated into oblong com- 

 partments. 



Pronotum with strongly convex disc which is steeply declivous in basal 

 fourth; sides biconvex; a large circular fovea at middle of basal fourth, on the 

 discal declivity just noted; each side provided with an enormous triangular 

 fovea which incises the side at basal third as noted above. 



Each elytron with sloping humeri, two large basal foveae, an entire sutural 

 stria and a broad but shallow dorsal depression to middle of length. 



Abdomen large, with simple segments. Five visible tergites in a length ratio 

 or 3.8/3.5/3.0/2.0/1.5 and the first three with broad, flat margins. Six sternites 

 in a length ratio of 1/2.5/2.5/2/1/0.5. 



