Hydi'optilidm belonging to the European Fauna. 825 



Hah. CiNTRA, Portugal, 26th and 27th April {Eaton). 



This species is closely allied no doubt to H. sparsa, but 

 it may be distinguished at once by the entire margin of 

 the dorsal plate, which in H. sparsa is very distinctly 

 notched. The warts on the middle of the inferior append- 

 ages appear to be absent in the latter insect. The sub- 

 apical process of the penis is also more pronounced and 

 more spirally twisted than in IT. sparsa. 



Hydroptila tigurina, Ris (Mitt. Schweiz. entom. Gesell- 

 schaft, Bd. ix, p. 133). 



This species described by Ris from Zurich, has been 

 taken by King at Ambleside in the English Lake District. 



H. rlieni, Ris (Mitt. Schweiz. entom. Gesellschaft, Bd. ix, 

 p. 241). 



From the Rhine between Rheinau and Ellikon ; not 

 yet known from any other locality. 



H. syhestris, Morton (E. M. M., 2nd Ser., vol. ix, p. 107). 



Remains unknown except from the original locality in 

 Scotland. 



H. scrrata, Morton (E. M. M., 2nd Ser., vol. ix, p. 108). 

 Is known only from Algeria. 



H. madachlani, Klap. 



In addition to the localities recorded by Klapalek and 

 myself, is found in Switzerland (Valais, Paul; Liestal, 

 Fas) ; Basses Alpes (Digne, Morton), and Algeria {Eaton). 



H. insubrica, Ris (Mitt. Schweiz. entom. Gesellschaft, Bd. 

 xi, p. 16, 1903). 



Recently described by Ris from examples taken by him 

 at Mendrisio in the Canton Ticino. 



Ithytricliia lamellaris, Eaton. 

 Occurs in Finland {Silfvcnius). 



Microptila minutissima, Ris (Mitt. Schweiz. entom. Gesell- 

 schaft, Bd. ix, p. 417). 



A particularly interesting little form described from 

 examples from Ziirichberg near Zlirich. 



