82 Hydroptilide belonging to the European fauna. 
EXPLANATION oF Puates V. & VI. 
PATH) WV: 
Hydroptila stellifera.—Fig. 1, apex of abdomen of male from 
beneath ; 2, do., from side. 
H. fortunata.—Fig. 1, apex of abdomen of male from beneath ; 
2, do., from side (in outline) ; 38, penis; 4, apex of penis (more 
enlarged). 
H. uncinata.—Fig. 1, apex of abdomen of male from beneath ; 
2, do., from side. 
Oxyethira distinctella.—Superior appendages. 
O. unidentata.—Fig. 1, apex of abdomen of male from beneath; 
2, do., from side. 
O. spinosella—Fig. 1, apex of abdomen of male from side, 
obliquely ; 2, do., from above; 3, ventral plate and penis; 4, 5 and 
6, various aspects of penis. 
O. falcata.—Fig. 1, apex of abdomen of male, in front (fig. 
inverted) ; 2, ventral plate; 3, outline of apex of abdomen from 
side, continued beneath to show ventral lobe; 4, 5, 6 and 7, aspects 
of penis. 
PLATE » Vi; 
Hydroptila Maclachlani.—Fig. 1, apex of abdomen of male 
from beneath ; 2, penis. 
Stactobia atra.—Fig. 1, apex of abdomen of male from beneath ; 
2, do., latero-ventral view; (a) obtuse process, (b) pieces produced 
into spine at apex, (c) downturned lobes, (d) inferior appendages (?) 
(cf. McLach., Mon. Rev., 1st Additional Supplement, p. 72); 
3, neuration of anterior wing. 
Oxyethira costalis—Fig. 1, apex of abdomen of male from 
beneath; 2, hook above ventral plate. 
O. ecornuta.—Fig. 1, apex of abdomen of male from beneath; 
2, do., in front; 3, do., from side; 4, hook above ventral plate ; 
5, apex of penis. 
O. Frict.—Fig. 1, apex of abdomen of male from beneath ; 
2, same from side; 3, penis from above, 
