R.UTELI1SLE 77 



Group II. 

 Subgenus Pelidnotidia nov. 



The species of the strigosa type, abundant in Mexico, have a 

 peculiar and isolated habitus due to their more elliptical outline, 

 less convex surface, more thickened lateral elytral margin, especially 

 in the female, in their large head, spinulose and not edentate or 

 only very minutely denticulate elytral apices and in their more 

 metallic coloration. Without having any very decided structural 

 divergence in special organs, I think therefore that they should be 

 designated by a special subgeneric name as above. The species in 

 my collection may be known as follows: 



Pronotum concolorous and sparsely punctulate medially, the legs and 

 tarsi more slender; surface lustre more or less metallic 2 



Pronotum blackish, with testaceous side margins, more strongly and 

 closely punctate; legs and tarsi notably stout; surface lustre not 

 definitely metallic 5 



2 Lateral angle of the hind coxae not or barely at all prominent pos- 

 teriorly 3 



Lateral angles notably prominent posteriorly 4 



3 Body narrower and more elongate-oval, testaceous, the elytra more 

 flavate, the entire upper surface with feeble pearly-green lustre; 

 pygidium and under surface blackish, with strong greenish lustre; 

 legs metallic green, the upper and lower edges of the femora and tibiae 

 testaceous, the tarsi pale; head fully three-fifths as wide as the pro- 

 thorax, with rather well developed eyes, the clypeus closely and 

 rugulosely punctate but shining, almost semicircular, twice as wide 

 as long, the apex distinctly, the sides finely and more feebly, reflexed; 

 front less closely punctate, the occiput finely and sparsely; antennal 

 club not as long as the stem; prothorax a little more than twice as 

 wide as long, widest slightly behind the middle, the sides broadly 

 rounded; sides feebly converging toward base, more gradually and 

 straighter anteriorly, the prominent angles very sharply acute, the 

 basal angles obtuse but only narrowly rounded; ambient bead strong, 

 entire, except medially at apex, the surface finely, sparsely punctate, 

 more strongly and a little more closely toward the sides; scutellum 

 transversely rounded ; elytra barely wider than the prothorax, parallel, 

 with broadly arcuate sides, fully a third longer than wide, circularly 

 rounded at apex, the lateral edges thickened to behind the middle, 

 the apical spines small, oblique; surface with fine and very obsoletely 

 impressed, not distinctly punctured lines; elsewhere with sparse 

 microscopic and indistinct sculpture; pygidium with rather fine and 

 close, transverse interlacing lines, becoming smooth and sparsely 

 punctulate apically; mesosternal process well developed. Length 

 (cf) 22.0-23.0 mm.; width 11.7-11.9 mm. Mexico (Guerrero), 

 Baron *permicans n. sp. 



