DYNASTIN^E 119 



and toward the sides; pygidium broad, wider than an elytron, mi- 

 nutely, sparsely punctate, polished and glabrous; abdomen and sterna 

 as in the preceding section; hind tarsi (9) barely shorter than the 

 tibiae, the basal joint but little shorter or stouter than the second but 

 more triangular in section. Length (9 ) 26.5 mm.; width 14.2 mm. 

 Mexico (Jalapa). [Cydocephala mafaffa Burm.]. . *mafaffa Burm. 

 A Nearly similar but not so large and more abbreviated, the color, 

 lustre and ornamentation identical; clypeus much less densely 

 sculptured, the distinct punctures close-set anteriorly but not 

 confluent, sparse in about basal half to the suture, which is effaced 

 though traceable; prothorax similar but a little more transverse, 

 scarcely punctate except sparsely though distinctly near the sides 

 and just before the scutellum; elytra as in mafaffa but shorter, 

 similarly circularly rounded in apical two-fifths, differing other- 

 wise only in having the punctures stronger, these becoming fine 

 but more notably close-set postero-externally; pygidium much 

 smaller in size, scarcely as wide as an elytron; hind tarsi a little 

 shorter and more slender. Length (9 ) 23.0 mm.; width 12.4 mm. 



Panama? *histrionica n. subsp. 



7 Elytra together with eight or ten black spots, forming a subcircular 

 ring; clypeal sinus very feeble; tarsi rather long in both sexes; 



pygidium pubescent 8 



Elytra each with a large oblique basal, and another large subapical, 

 black area, the two frequently confluent laterally; body not so large 



in size; clypeal sinus obsolete; tarsi long and slender n 



Elytra wholly devoid of maculation; body very moderate in size and of 

 more slender form, the antennal club longer; clypeal sinus barely 



traceable; tarsi much shorter 12 



8 Spot near the scutellum large, sometimes nearly half as long as the 

 elytra and at base more than one-half as wide, in the form of an acute 

 and sharply pointed right-angled triangle. Body elongate-oval, 

 strongly convex, shining, pale brownish-flavate throughout above 

 and beneath, the legs also pale, the dorsal spots black; head more than 

 half as wide as the prothorax, black, the clypeus dark red, opaculate 

 and very coarsely but shallowly punctato-rugose, twice as wide as 

 long (9 ), a little less (cf ), much shorter than the rest of the head, 

 feebly trapezoidal, with slightly arcuate sides and obliterated or 

 very broadly rounded angles, the sinus gradual and extremely feeble; 

 edges slightly but sharply reflexed; suture straight, evident; front 

 strongly but sparsely punctate; prothorax very nearly twice as wide 

 as long, evenly rounded at the sides, more convergent anteriorly to 

 the prominent and acute angles, the basal angles rounded; lateral 

 bead very fine, the apical moderately wide, entire, the basal com- 

 pletely wanting; surface evenly convex, with two approximate and 

 rather large, irregularly black spots, arranged transversely at the 

 central part of the disk, the sublateral dot minute and subobsolete; 

 punctures everywhere sparse, rather small but distinct medially, 

 becoming somewhat coarse laterally (cf ), where they bear each a 

 short erect hair, or still smaller and more glabrous ( 9 ) ; elytra nearly a 

 fourth longer than wide, barely at all wider than the prothorax, 



