416 PHYTOPHAGA. 



23. (Edionychis circumcincta? 



(Edionyckis circumcincta, Crotch, Proc. Ac. Phil. 1873, p. 62 \ 



Hab. North America, Southern States 1 . — Mexico, Oaxaca (Boucard, Hbge), La 

 Parada (SalU). 



Rather than describe the Mexican specimens before me as new I prefer to identify 

 them with the species of Crotch, with whose description they nearly agree. The 

 head is rugosely punctate throughout, black, with two more or less distinct rufous 

 spots on the vertex. The thorax is finely and closely punctured and has a small 

 blackish spot on the middle of the disc ; the posterior angles are produced into a blunt 

 tooth. Of the elytral black bands, the one on the disc is broad; while the sutural 

 and lateral bands are narrow, the former extends to the apex, the lateral and central 

 ones are abbreviated behind; the elytra are closely and distinctly punctured, their 

 epipleurse are of the ground-colour, and the lateral band is placed close to the lateral 

 margin. The underside and legs are black. Without seeing the type of OS. circum~ 

 cincta it is impossible to say whether the Mexican insects are identical with it or 

 not. (E. patruelis, Harold, is evidently exceedingly closely allied, and might possibly 

 be another variety of the present species. 



24. (Edionychis trilineata. 



Black ; above testaceous ; head rugose-punctate ; thorax shining, impunctate, with a transverse black band ; 



elytra closely punctured, a narrow sutural, a broader submarginal, and another discoidal longitudinal band, 



greenish or bluish-black. 

 Length 3 lines. 



Hab. Mexico (Salle), Ciudad in Durango (Forrer). 



I am again obliged to separate this species from the many similarly coloured allied 

 forms, the descriptions of which, mostly published by Von Harold, do not agree suffi- 

 ciently to include the present species of (Edionychis. CE. trilineata seems to be most 

 nearly allied to the North American (E. jnetaurista, from which it differs in the entirely 

 black underside, legs, and head, the impunctate thorax, and by the elytral bands being 

 of the same length (the inner band in (E. petaurista is always shorter than the lateral 

 one). In (E. trilineata the anterior angles of the thorax are produced into a tooth, the 

 lateral band of the elytra is not placed so close to the lateral margin (as is the case in 

 (E. petaurista and several other species), and the elytral epipleurae are entirely yellow. 

 The two specimens before me do not quite agree with each other in the punctuation, of 

 the elytra, which in one is extremely close or granulate, and in the other finer and more 

 scattered ; the thorax in both has its sides strongly rounded anteriorly, but straight at 

 the base ; and the elytral bands in one specimen are more widely separated than in the 

 other, but their shape and position is the same. The specimen in M. Salle's collection 

 bears the label (E. trilineata, Sturm, in that author's handwriting, which, name I have 

 retained. Unless many specimens from the same localities can be obtained for exami- 



