genera and species of the Blepharoceridae. 409 



The metamorphoses of a Paltostoma torrentium are clcscribed 

 by Fritz Müller in an admirable paper in the Archivios do Mus. 

 Nacion. in Rio Janeiro, Vol. IV, 1879; the iniago's are but im- 

 perfectlj^ described from specimens extracted froni pupae. A male is 

 figured in Tab. 7, f. 7. with subcontiguous eyes (the letterpress p. 81 

 says „contiguous"). The female is said to occur in two forms, a 

 sanguisugous one with a broad front (the head is figured 1. c. 

 fig. 14) and a mellisugous one with a still broader front and small 

 eyes (the head, 1. c. fig. 13). 



The above-mentioned male with contiguous eyes has the venation 

 of Paltostoma^ but cannot well belong to that genus, because the 

 male of the latter has a broad front. Schiner's brazilian specimens 

 agree in this respect with the mexican specimen which I have exa- 

 mined in Turin (comp, niy paper 1. c. p. 411). That the two females 

 with a broad front belong to the male with the contiguous eyes re- 

 mains to be proved, because the Blepharoceridae hitherto described 

 in both sex es, show the same formation of the head in both. 

 Nothing can be decided about the systematic position of Paltostoma 

 torrentium until well-preserved specimens shall be forthcoming. 

 More about this matter will be found in my article in the Ent. 

 Mouthly Mag. London, Vol. XVII, p. 130; addition p. 206. 



Analytical Table. 

 (The figures of the wings quoted here will be found in Loew's Re- 

 vision etc. 1877.) 



I. The incomplete vein near the posterior margin is present. 

 A. Second longitudinal vein with two branches (fig. 6). 



a. Origin of the anterior branch of the second vein coincident 

 with the origin of the third vein (fig. 6). 

 Anterior tibiae curved in the cf. 



Bibiocepliala 0. S, B. grandis 0. S. cf — 



Rocky Mts. 



aa. Origin etc. not coincident etc. but distad of the origin of 

 the third vein. 

 Anterior tibiae straight in the male. 



Agathon v. Röder. Ä. elegantidus v. Röder cf — 



Nevada, U. S. 



AA. Second longitudinal vein simple, without branches. 



a. Eyes contiguous, bisected by an unfacetted crossband, or 

 by a simple groove. 



Blepliarocera Macq. 



