Studies on Tipulidae 11. 195 
with E. einerascens. No definition was given, but the association 
of these two species proves that the presence of a discal cell was 
the prineipal character. E. cinerascens, as I shall presently show, 
beiongs in another division; the subgeneric name may remain for 
E. imbuta, with the definition just given by me. The question 
whether Cheilotrichia on account of the pecularities of its venation, 
should not be entirely separated from Zrioptera in the sense of my 
Monograph I do not attempt to solve here. 
6. Among the doubtful forms referred to Erioptera there is the 
E. trivialis M. (cinerascens M.), whose synouymy with L. eiliaris 
Schum., proposed by me in the Stett. Ent. Z. 1554. p. 209, although 
adopted by Schiner, still requires confirmation. E. trivialis seems to have 
. some affınity to Trimiera and Psiloconopa in its general habit and in 
the character of its venation; it has very little pubescence on the 
wingveins. Should a new generic name become necessary, Platytoma 
Lioy (I Ditteri etc. 1864, p. 42) might be available; it was intro- 
duced for E. cinerascens and defined „second joint of the antennae 
elongate and stout; wings with a discal cell.“ But this latter cha- 
racter is variable in this species. 
Trimiera. 
O. Sacken, Proc. Ac. Nat. Sc. Philad. 1861, pag. 290; Monographs 
ete, IV.-p. 169;-Tab; 2. 8 T,,wing, 
This genus is cosmopolitan and occeurs in all Europe, North- 
America (atlantic and pacific States, Mexico); South-America (Brazil, 
Argentine Republie, Chili); Africa (Egypt, Southern Africa, Madeira, 
Canary-Islands); Australia (Sidney, Swan River), New Zealand; the 
Island of St. Paul in the Southern Pacific. All the specimens which 
I have seen look more or less alike, as if they were more or less 
developed or degenerate forms of the same species. In New Zealand 
a species occeurs with paler colored wings and an open discal cell. 
The european 7" pilipes has been found in Sweden, Finland, Russia 
(in Moscow by Fedchenko), France, Germany, Holland, Switzerland 
ete. It is generally considered as rare, but in some localities it 
occurs more abundantly. Mr. Marquet, entomologist in Toulouse, 
told me that it was quite common there, resting on housewalls, espe- 
cially above gutters. A few days after meeting Mr. Marquet (July 
1882) I found several specimens in that position in the town of 
Arreau, in the Pyröndes. Imhoff (Inseeten der Schweiz) says that, 
altough rare elsewhere, 7. pilipes is common in Bale, on housewalls. 
Limnobia brunnipennis Maceq., Suites & Buffon I, p. 106 
XXXI. Heft II. 13 
