2O ENTOMOLOGICAL NEWS. [Jan., '(X). 



? 's) which seem to prove conclusively that we are only deal- 

 ing with a remarkable sexual dimorphism. The species fits 

 fairly well in Fairmaire and Germain's genus Gynapter^." to 

 which I have referred it. The only character in which M. 

 opaca G. Horn differs structurally from their diagnosis of 

 Gynapteryx is in having unequal claws, and I am disinclined 

 to propose a new genus on this character (which is easily mis- 

 interpreted) without an examination of the type of Gynapter- 

 yx, the which I would rather expect to show the claws sub- 

 equal, just as we have one species of Calos pasta (C. viridis) 

 with the claws of nearly equal length. Dr. Geo H. Horn, on 

 the occasion of the discovery of the $ $ of "Megetra" opaca 

 by Prof. D. W. Coquillett, discussed the systematic position of 

 his species but apparently was not acquainted with Fairmaire 

 and Germain's genus, as he would certainly have referred to 

 so remarkable a coincidence as a second species with apterous 

 9 , had he known of it. Horn after examining the $ 's of Co- 

 quillett's collection now before me, placed M. opaca in Le- 

 conte's genus Calospasta. In doing this he remarks regarding 

 his species, as did Fairmaire and Germain five years before re- 

 garding theirs, that such forms mark the transition between 

 the Meloine and Lyttine groups of the family. The only other 

 species of Gynapteryx is flavocinctus Fairm. et Germ., the 

 type of the genus. It can be separated from Horn's species 

 as follows : 



C?. Nitid, thorax coarsely punctate, elytra black, with yellow markings. 



flavocinctus. 



Opaque, thorax almost smooth, elytra entirely black opacus. 



9. Head and thorax reticulated, elytra testaceous .... flavocinctus. 

 Head and thorax almost smooth, elytra black opacus. 



Genus* PLEUROPASTA Wellm., gen. nov. 



A Calospastac Lee. affinis sed differ t caput inter oculus gib- 

 bosum, vertex valde rotundatus; elytrisque fortiter costatis. 

 $ tarsi antici simplicibus. 



Species typica Calospasta mirabilis G. Horn. 



Genus allied to Calospasta Lee. Head with vertex very 



* TrAepa, costae ; Trcurcrw, orno. 



