Platynin^ 73 



No species of this genus has yet been discovered on the Pacific 

 coast, although it occurs in the Sonoran regions of Arizona and 

 Mexico. 



Group I — punctijormis 



Subgenus Circinalia in sp. 



This group comprises a considerable number of species, which 

 however often resemble each other very closely to cursory view; 

 those before me at present are the following: 



Elytra black, abruptly and broadly margined with flavo-testaceous. 

 Body elongate-suboval, convex, highly polished; anterior parts 

 rufo-piceous above and beneath, the remainder of the under surface 

 black, the epipleura and legs pale testaceous; head not elongate, 

 three-fifths as wide as the prothorax, with rather large and moder- 

 ately prominent eyes; antennae fuscous, paler basally, very slender 

 though less than half as long as the body, the third joint a little 

 shorter than the fourth; prothorax a fourth or fifth wider than long, 

 the sides parallel, very evenly and circularly arcuate from apex to 

 base, the latter transverse medially, as wide as the rather deeply 

 sinuate apex, which has bluntly rounded angles; basal bead inter- 

 rupted at the middle; surface very evenly convex, smooth, not 

 impressed, the stria very fine and partially obsolete; foveae deep, 

 with a feebly impressed prolongation almost to the middle; elytra 

 oblong-oval, one-half longer than wide, two-fifths to one-half wider 

 than the prothorax, gradually ogival behind, w^th barely visible 

 sinus; striae coarse, rather deep, strongly punctate, the ninth very 

 close to the margin; intervals but slightly convex, crenulated by the 

 punctures; met-episterna twice as long as wide; legs moderate, 

 the anterior male tarsi very feebly dilated. Length (cf 9 ) 7.5- 

 8.5 mm.; width 2.7-3.3 nim. North Carolina to Alabama (Mobile) 

 and Texas (Austin). Not very abundant. [Ag. palliatum Dej.]. 



limbata Say 



Elytra black throughout, with the margins even more finely reflexed and 

 the ninth stria very close to the edge; upper surface highly polished 

 throughout, partially opaque beneath 2 



2 — Striae not punctate, or sometimes barely visibly so and then only at 

 the sides as a rule 3 



Striffi distinctly punctured throughout, the punctures always crenulating 

 the intervals more or less evidently; legs rufous to flavate through- 

 out 5 



3 — Legs obscure rufous, the femora black or piceous-black. Body 

 'elongate, rather convex, deep black; head not elongate, two-thirds 

 as wide as the prothorax, with large and moderately prominent 

 eyes, the anterior impressions rather small, linear, deep; palpi 

 slender, black, with pale tip, the last joint longer than the third; 

 antennae very slender, blackish, paler basally, nearly half as long 

 as the body, the third and fourth joints subequal; prothorax only 



