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in the same genus as 2. extincfa. They may therefore be referred 
to Limnobia. 
Limnobia formosa. Here Heer’s two figures essentially agree and 
are very good. Heer compares it to two living European species, 
L. guadrinotata and L. annulus, both true Limnobie, and if the 
neuration is correctly given, it is plain from the length of the 
auxiliary that it isa Limnobia, and nota Dicranomyia. This isthe 
species, presumably from Radoboj, the locality of which is not 
stated by Heer. 
Limnobia cingulata. ‘The two figures given by Heer disagree in 
important particulars, and that which is enlarged is plainly incor- 
rect. Heer states that it agrees so closely with Z. mubeculosa Meig. 
as hardly to be distinguished from it, and he specifies in particular 
the neuration. It is therefore probably a true Limnobia. 
Limnobia tenuis. The neuration is only partially shown, and is 
said by Heer to be difficult to trace. Heer compares it to that of 
L. lutea, Meig., a true Limnobia, and there is nothing in what is 
figured inconsistent with such a generic reference. 
Limnobia vetusta. ‘Twodifferent figures of this are given by Heer, 
one of them useless, the other none too good, but showing the 
coarser parts of the neuration, from which it would appear to be a 
Limnobia. Heer compares it to Z. dumetorum Linn., a true Lim- 
nobia. ‘There is an additional figure of this species in Heer’s os- 
stile Flymenopteren, P\. iii, fig. 15c, overlooked in my /ndex to De- 
scribed Fossil Insects; it is too small to be of any service, the neu- 
ration being only vaguely indicated. 
Limnobia debilis. The venation given in the two figures by Heer 
does not agree, and the smaller figure is manifestly incorrect in this 
particular ; besides Heer specifies that the larger figure is to be used 
for studying the venation. This shows that it is no Limnobia in 
the present sense. Heer, himself, says that the neuration agrees 
with that of Z. sylvatica Meig., which Schiner refers to Gno- 
phomyia, and as the neuration of the enlarged figure shows nothing 
discordant with Gnophomyia, it may best be referred here until re- 
examination of the type can be had. 
The only other Tipulids to be credited to Heer are one given in 
his Urwelt der Schweiz (1865), coming from the miocene of Locle, 
Switzerland, and another from Aix, in his account of the Aix fossil 
insects (1856). 
Limnobia jaccardi. This species from Locle is not described, but 
