314 SUPPLEMENT. 



COPHURA (p. 181). 



Blaxjltoew, Centur. x. no. 24 (1872) (nomen praeocc.). 



Blacodes, Loew, Berl. ent. Zeitschr. 1874, p. 377 (nomen praeocc.) . 



Loewiella, Williston, Manual North-Amer. Dipt. p. 57 (1896) (nomen praeocc. ). 



In his remarks on Cophura, Osten Sacken says that " the description of the antennae 

 and of the venation proves Blacodes [Blax olim) to be a different genus " : the only 

 difference in the venation is the more coarctate fourth posterior cell, which certainly 

 is not a character of generic value. The antennae of Blacodes have a slender elongate 

 style — " stylo terminali lineari, acuto, articulis duobus primis simul sumtis breviore " : 

 in the three species before me the style is short, but it may be slender, ending in a 

 bristly point. The characters of Cophura, pretty nearly as Osten Sacken denned them, 

 are brought out in my remarks on Nicocles scitulus, Willist., and Aphamartania fur, 

 Willist. : apparently Osten Sacken overlooked the descriptions and figures of these 

 species. Blacodes cristatus, Coq., moreover, has the style " slender, slightly over half 

 as long as the third joint." Taking all these facts into consideration, the differences 

 between Cophura and Blacodes wholly disappear. Furthermore, the type of coloration 

 is markedly alike in Blacodes bellus and Cophura humilis, which has a short style. On 

 the other hand, there is a distinct type observable in the remaining forms — a blue- 

 black abdomen, with white-pollinose markings. 



The following species belong to the genus Cophura as understood by me : — C. bella 

 Loew, Texas ; C. scitula, Willist., Washington ; C. fur, Willist., Arizona ; C. cri tata, 

 Coq., C. truncus, Coq., and C. clausa, Coq., California ; and C. pulchella, Willist., 

 C. humilis, Willist, and C. sodalis, O. S., Mexico. Taracticus brevicomis, Willist., also 

 agrees in all respects, save that the abdomen is lightly punctulate. 



Cophura sodalis (p. 181). 



To the locality given, add : — Mexico, Guadalajara in Jalisco {Schumann). 



Two females, apparently belonging to this species, though the legs and wings seem 

 to be darker coloured ; the parts described as brown by Osten Sacken are black, and 

 the wings are deep brown, uniform in colour in one specimen, with paler spots in 

 the other. 



2. Cophura pulchella, sp. n. (Tab. V. fig. 24, 2 .) 



S 2 • Antennae black ; first joint scarcely longer than the second ; third joint not twice the length of the first 

 two together ; style divaricate, about as long as the second joint. Front and face thickly covered with 

 light yellowish-white dust or tomentum ; hairs of the mystax nearly white. Mesonotum densely light 

 yellowish-pollinose, in the middle with a broad opaque brown stripe, obsoletely divided and dilated 

 anteriorly ; on either side are two rounded spots of the same colour ; scutellum and pleurae wholly opaque 

 light yellowish -grey ; metanotum shining black ; the mesonotum furnished for the most part with 

 moderately short, sparse, light- coloured bristles, and there are some weak bristles on the margin of the 

 scutellum. Abdomen shining black, with a strong blue reflection ; all the segments opaque light grey 



