104 CONTEIBtTTIONS TO CANADIAN PALiEONTOl.OGY 



MegarapMdia elegans, Cookerell. 

 DictyoTophidia veterana, Scudder. 

 Archiinocellia oligoneura, Handlirsch. 

 ArchirapMdia tumulata, Scudder. 

 'iArchiraphidia tranquilla, Scudder. 

 ^Archiraphidia eventa, Scudder. 

 Inocellia erigena, Scudder. 

 llnocellia somnolenta, Scudder. 

 'iRaphidia (larva), Menge. 



Thus, it may be seen that in organization as well as in number 

 of forms the raphidians were far more fully developed in the Ter- 

 tiary than at present, which shows that this group has becnitio 

 decidedly retrogressive. 



Neueoptera. 



Hemerohiidce : — 



B othromicrornus lachlani, Scudder. (Quesnel.) 



DiPTEKA. 



Mycetophilidw : — ■ 



Sciara deperdita, Scudder. (Quesnel.) 



Boletina sepuUa, Scudder. (Quesnel.) 



Brachypeza dbita, Scudder. (Quesnel.) 



Brachypeza procera, Steudder. (Quesnel.) 



Trichonta dawsoni, Scudder. (Quesnel.) 

 Bihionidcs : — 



Penthetria angustipennis sp. nov. Tig. 6. 



Locality: Horsefly mine— (July 20, 1906. L.M.L.). 



Fig. 6. — Penthetria angustipennis, Handlirsch. (B=EadiTis, Bs = 

 Sector radii, M = Media, Cu= Cubitus. 



Only one wing is distinctly preserved. This has a length of S"", 

 and is three and two-tenths times as long as broad, with a nearly 

 straight costal border. At scarcely more than six-tenths the length 

 of the wing, the radius fuses in the anterior margin in a gentle 



