238 Scientific Proceedings, Royal Dublin SocieUj. 



though the great difference of size makes it less likely. In any case 

 tlie na.me piincttpennis will have to be dropped, as it is already used by 

 Wiedemann. 



" Var. j3. — Shanks and feet ferruginous ; end of the fore shanks and 

 base of the fore and hind feet brown. 



" Mycetia communis, Bob. D. 805. No. 1. 



" Taken by Mr. F. Walker near London." 



Four specimens of the type form. This is given in the Palaearctic 

 Catalogue as a synonym of (jlabrifrons Mg., which is incorrect ; in suillorum 

 the hind tibiae are hairy, but there is no anteroventral bristle, while in 

 glahrifrons (according to a note made some years ago when I examined the 

 type) there is a distinct anteroventral bristle. Stenhammer appears to have 

 recognized the species correctly. Haliday's var. /3 is evidently our Roseri 

 End., but I could find no specimen in his collection ; probably he only knew 

 it from Walker's specimens. Haliday evidently considered the identity of 

 Desvoidy's species open to considerable doubt, or he would have used the 

 names ; and in the absence of any indication by Desvoidy as to whether his 

 species had the venation of Borhorus or of Limosina it does not appear 

 advisable to revive his names. 



3. Borboriis niger Meig. — One specimen labelled " niger," and five others, 

 were correctly named. This species has only one pair of dorso-central bristles 

 developed on thorax. 



4. Borborus equinus Fin. — Many specimens of this very common species. 



5. Borborus nigrifemoratus Macq. — I could find no specimens in the 

 Collection ; therefore probably Haliday only knew it from Walker's collection. 

 B. stercorarius Meig. and tibialis Zett. appear to be synonyms of this species. 



6. Borborus flampenins Hal. — Originally described as follows : — 



" Sp. 6. B. flavipennis. Niger; facie, coxis anticis et genubus 

 testaceis ; haUeribus albidis ; alis flavescentibiis pal/ido-nervosis. Fem. 



" Black : the frontals dull ; the triangle glossy : face and palpi 

 testaceous : thorax shining : abdomen dull black : 2d segment not 

 longer : legs hairy : the fore eoxse and the extreme base of the shanks 

 rust-yellow : poisers whitish : wings yellowish : nerves scarcely darker ; 

 the small cross-nerve placed about the first third of the diseoidal cell : 

 resembles the next species, but the fore and hind thighs are thick ; the 

 Ist joint of the hind feet almost triangular; the 2d very little longer; 



