118 Mr. R. M‘Lachlan’s Monograph of the 
ochreous. Mesothorax brown. Anterior wings somewhat dilated 
towards the obtuse apex, uniform pale greyish-ochreous without 
markings; fringes ochreous ; neuration indistinct, scarcely darker 
than the membrane; the three transverse veins forming the 
anastomosis irregular ; that closing the discoidal cell very strongly 
curved ; that uniting that cell to the cellula thyridii very oblique, 
placed rather nearer the base than the former; that closing this 
cell placed still nearer the base and oblique, but in an opposite 
direction to the one above it. Posterior wings pale grey ; fringes 
greyish-ochreous. Legs whitish-ochreous. Abdomen greyish- 
brown. The last abdominal segment in the female is furnished 
with two somewhat triangular diverging valves; beneath them 
appears to be a large concave egg-pouch. 
Expanse of fore-wings 10 lines. 
I have seen but one example of this—a female—which is in my 
own collection. It was taken by Mr. Winter in the Norfolk 
Fens. We must await the capture of more specimens, and espe- 
cially of males, before a complete description can be given. It 
certainly does not appear to have been previously described. The 
size is greater than that of any other European species strictly 
pertaining to Setodes (in the sense in which I understand that 
genus), excepting S. ochracea, with which it agrees in its uniform 
eoloration, though otherwise abundantly distinct ; the arrangement 
of the transverse veins forming the anastomosis is peculiar and 
characteristic. 
3. Setodes lacustris, Pictet. (Pl. XIII. fig. 3, app.) 
Mystacides lacustris, Pict. (*) Recherch. p. 171, 13, pl. 13, 
fig. 7 (1834); Setodes testaceus, Hag. (*) Ent. Ann, 1860, 
p- 77,77 (not of Curtis). 
Antenne greyish-ochreous, with fine and distant darker annu- 
lations, most evident in the female. Head clothed with ochreous 
hairs. Palpi grey. Mesothorax ochreous, with a few hairs of 
the same colour, Anterior wings greyish-ocbreous (paler in the 
female), with dark grey spots; some of these uniting form a line 
along the anastomosing transverse veins, and the apical margin is 
regularly dotted with grey; fringes grey; the three transverse 
veins of the anastomosis are straight, that closing the discoidal 
cell placed rather nearer the apex than the others. Posterior 
wings greyish, subhyaline, with grey fringes. Legs pale greyish- 
ochreous, the anterior tibia with apparently two very minute 
apical spurs. Abdomen dark dull greenish, with whitish lateral 
