78 Mr. Kenneth J. Morton’s notes on 
A species with a certain amount of resemblance to H. 
fortunata, but amply distinct therefrom, on account of 
the hooks on the dorsal plate. 
Puate V., fig. 1, apex of abdomen of male, from beneath ; 
fig. 2, same, from side. 
Hydroptila Maclachlani, Klap.— This very distinct 
species was described by Klapalek in Sitz. Bohm. Ges., 
1890. It proves to have a wide distribution, and ex- 
amples from the following localities are now before 
me :— 
England (Charmouth, Dorset, June 18th, Rev. A. H. 
Eaton); Scotland (Carluke, August, very common, 
Morton); Pyrenees (Léz and Laruns, 14th and 24th 
July, Maton) ; Portugal (Silves, 17th May; Cintra, 31st 
May, Haton, many examples) ; and evidently the same 
species from Madeira (one male, 21st Nov., Haton). 
As Klapalek’s figures may not be generally accessible, 
I give, on Plate VI., a figure of the apex of abdomen from 
beneath (fig. 1); also one of the penis, which is peculiar 
and has not been previously figured. 
Note.—I have denuded and examined the heads of 
many examples of the foregoing four species, with the view 
of satisfying myself regarding the presence or absence 
of the large valve-like lobes given by Mr. McLachlan 
as a leading character of the genus Hydroptila. That 
these lobes do not exist at all in H. Maclachlani is, I 
think, certain; and if they are present in any of the — 
other species, they almost certainly do not reach the 
enormous proportions to which they are developed in 
such species as H. occulta and H. femoralis. Without 
doubt good characters exist for generic subdivision, but 
as one or more of the previously described species are 
doubtful in respect of the elevated lobes, steps in this 
direction are not yet safe. Each species should be care- 
fully studied on the point from fresh material, when the 
chance occurs. 
The neuration of the four species may be said to agree 
both among themselves and with Mr. McLachlan’s figure. 
Genus Stacropia, McLach. 
Stactobia atra McL.—Mr. McLachlan has kindly com- 
municated the figure of the neuration of this species, 
referred to at page 72 of his ‘ First Additional Supple- 
