130 MEMOIRS ON THE COLEOPTERA 



propriety of placing it near the latter genus. In the strongly 

 sinuate bilobed clypeus it differs greatly from either of the genera 

 mentioned. 



Spilosota n. gen. 



The type of this genus is not remarkable in any way in its general 

 aspect and might readily be passed over as a Cydocephala allied to 

 complanata, but the mentum is of a type wholly different from 

 anything else in the tribe and probably only approached by that 

 of Democrates. The clypeus also is very different from that to be 

 seen anywhere in Cydocephala proper and approaches rather that 

 of the upper Sonoran Ochrosidia, so abundant in species north of 

 the Mexican boundary. The known species may be described as 

 follows : 



Elytra glabrous, the feeble brownish mottling rather sharply denned. . .2 

 Elytra sparsely and more or less inconspicuously setulose, the mottling, 



when visible at all, very indefinite 3 



2 Body stout, oblong-oval, moderately convex, shining, glabrous except 

 on the sterna, pale flavate-brown in color, the legs, excepting the 

 minutely black knees and the outer edge of the anterior tibiae, con- 

 colorous; head rufous, brown at the basal margin; pronotum pale 

 red-brown, broadly flavate-brown laterally; elytra pale red-brown 

 in a large elongate discal area on each, bifurcating basally, the outer 

 ramus slender, and unequally incised apically, the suture and outer 

 third flavate-brown; head small, scarcely two-fifths as wide as the 

 prothorax, with well developed and slightly convex eyes, coarsely 

 and densely punctato-rugose but shining, abruptly finely, sparsely 

 punctate at base; clypeus short, twice as wide as long, in general 

 outline semicircular but with a small sinus at each side of the rounded 

 median part of the apex, which is notably reflexed; suture fine, 

 not distinct, strongly sinuate medially; mandibles slender, slightly 

 pointed externally at apex; antennal club small, only as long as the 

 five preceding joints, which form a slender funicle, the sixth and 

 seventh joints not wider than the preceding; prothorax nearly twice 

 as wide as long, the sides broadly arcuate, converging in apical, 

 parallel and nearly straight in basal, half, viewed dorsally, the apical 

 angles only briefly produced but acute and sharp, the basal mod- 

 erately rounded; base arcuate, very feebly lobed medially and with 

 a fine strong entire bead, the lateral margin very fine; punctures 

 rather fine but distinct, remote, less sparse and somewhat coarser 

 laterad; scutellum ogival, wider than long, nearly smooth; elytra 

 scarcely visibly longer than wide, parallel, abruptly and very obtusely 

 arcuate at tip; only slightly wider than the prothorax, the sides ( 9 ) 

 slightly impressed below the large humeral callus but with barely a 

 vestige of medial modification of the edge, which however bristles 

 with long stiff hairs from base to apex, arising from small punctures 



