BY THOMAS G. SLOANE. 711 



as in CUvina, fourth and fifth striae confluent at base; third 

 interstice 4-punctate. Ventral segments transversely sulcate. 

 Legs stout, fossorial. 



Differs from CUvina by maxillae short, toothed on inner side 

 (not densely hirsute); mentum convex, bottom of sinus distant 

 from base, sinus shallow; labium wide at apex; form of tibise, &c. 

 It has no resemblance or apparent close affinity to the genus 

 Clivinarchus. 



Platysphyrus tibialis, n.sp. 



Robust, elongate, black. 



Head rather large (4 mm. across eyes); frontal impressions 

 deep, elongate, rugulose; space between them wide, convex; orbits 

 lightly enclosing eyes at base, their postocular part small, nob 

 nearly as protuberant as eyes, rising abruptly from head. Pro- 

 thorax broader than long (6*3 x 7 mm.), widest at posterior angles, 

 roundly narrowed to apex (4 mm.), convex (lightly so longi- 

 dinally, strongly so transversely), lightly declivous to sides, 

 strongly declivous along basal curve; anterior margin truncate 

 behind head, with anterior angles slightly advanced, wide, obtuse; 

 basal curve short; lateral border thick, reflexed; lateral channel 

 wide, widest and not interrupted at posterior angles, very narrow 

 near base; basal margin entire, not reflexed nor divided from 

 pronotum by a channel; posterior marginal puncture at posterior 

 angle on inner side of lateral channel; median line lightly im- 

 pressed, reaching base; lateral basal impressions short, strongly 

 impressed, placed above basal declivity in front of basal angles. 

 Elytra oval (14-5 x 7'7mm.), convex, strongly declivous to 

 peduncle, truncate at base, widely rounded at apex; stride lightly 

 impressed, finely crenulate, first and second confluent at base and 

 rising from an umbilicate puncture at base of first interstice, 

 seventh entire, hardly lighter than others; interstices depressed, 

 lightly convex on apical declivity, eighth narrow, roundly convex 

 (not carinate) near apex; lateral border narrow, reflexed on basal 

 half, becoming ver}^ wide and thick posteriorly, reaching to apex 

 and to base of fourth interstice. Prosternum convex, declivous 

 to anterior margin, transversely striolate; intercoxal part very 



