BATRISINI 257 



Maxillary palpi four-segmented and quite small in keeping with genus; 

 first segment minute, elongate-cylindrical; second three times as long, arcuate, 

 pedunculate for basal third then expanded in apical two-thirds; third as wide 

 as second, one-half as long, triangular from ventral view, broadly obconical 

 from lateral view; fourth as long as preceding two united, wider than third, 

 subfusiform, with a minute apical truncature bearing a palpal cone. Fourth 

 segment 0.10 mm. long x 0.03 mm. wide. 



Antennae 0.93 mm. long, eleven-segmented, distant, simple; first segment 

 rounded-oblong; II similar but smaller; III smaller, obconical; IV-VIII 

 moniliform; club large (0.40 mm. long), composed of last three segments, 

 integument rugose, black, the last segment as long as ninth and tenth united 

 (0.20 mm.). 



Pronotum with length equal to width, widest near middle; disc strongly 

 and simply convex but not gibbous (33 per cent elevated above the critical 

 line given in Group key) ; transverse antebasal sulcus connecting a lateral 

 fovea each side ; longitudinal sulcus extending apically from each lateral fovea, 

 between disc and margin, and becoming evanescent at middle; basal bead ex- 

 tended medianly in a short, narrow carina for half the distance between bead 

 and transverse sulcus. 



Scutellum large for pselaphids, equilaterally triangular. 



Each elytron with a prominent humeral callus; a subhumeral fovea; an 

 entire longitudinal carina on flank, from subhumeral fovea to apical margin; 

 four large, deep, nude basal foveae of which the sutural is set apart; sutural 

 stria strong and entire. 



Wings present. 



Abdomen with five visible tergites in a length ratio of 3/1.3/1.3/2.5/3, 

 with margins as follows: first each side with a strong, entire external and 

 internal carina; second and third each side with a single, entire carina. First 

 four tergites with a pubescent fovea in each latero-basal corner (by microdis- 

 section these foveae were found to extend deeply into the abdominal cavity as 

 conical invaginations. They appear to be spiracular, and if so then the setae 

 at orifice may be guard hairs.) Base of first tergite with a pair of minute, distant, 

 blunt cusps separated by one-third the discal width of segment. Last tergite 

 simple, flattened, vertical, and transversely fusiform. 



Six sternites in a length ratio of 1/1.5/1/.5/.5/3 at middle. First in the form 

 of a circular platform with concave, rugulose upper surface, between posterior 

 coxae. Second with a longitudinal median carina. Sixth transversely semilunar, 

 with a broad, black apical bead. 



Metasternum simple, convex, medianly foveate at apex. 



Legs neither toothed nor inflated. In addition to the usual patch of setae 

 at apex of ventral face, each intermediate tibia has a sharply defined, longi- 

 tudinally ovate, densely pubescent fovea or depression on the antero-dorsal 

 face for apical third of length. Tarsi long, slender, three-segmented; first 

 tarsomere short and triangular; next two much longer, third longer than sec- 



