176 
* Allarithmia. One named species, regarded by Osten Sacken 
as an Eriocera, of which, he says, he has recognized three species 
in Prussian amber, one other being the Anisomera mentioned 
above. 
From this it would appear that the amber fauna does not contain 
a single extinct generic type, unless Calobamon be excepted, 
although several of the genera were first made known from amber. 
In connection with the amber Diptera, it may be added that 
Burmeister, in his W/anual of Entomology (1836), mentions several 
species of ‘‘Limnobia’’ found in amber, some small like JZ. 
pulchella (now referred to Idioptera, a subgenus of Limnophila), 
some larger. Of course, any nearer reference is impossible, So 
too several other authors—Defrance, Schlotheim, Sendel, etc.— 
have mentioned the occurrence in amber of species of ‘‘ Tipula’’, 
but Loew’s later and fuller statements are presumed to cover all 
these. 
GugERIN (Rev. Zool., 1838, 170, pl. i, fig. 18) mentions ‘‘ deux 
petits Tipulaires en état d’accouplement’”’ in Sicilian amber. In 
my Jadex to Described Fossil Insects, p. 667, I have wrongly quoted 
this as ‘‘ Tipula,’’ as no genus is specified, and it is evident from 
the figure that the insect is rather one of the Mycetophilide. 
AYMARD, in 1854, catalogues two named but undescribed species 
of a genus he calls Dichaneurum, without further indication of its 
characters than that it belongs to the family Tipulidz, as found fossil 
at Le Puy, France. The reference is of course valueless without 
further details. 
GIEBEL, in his Fauna der Vorwelt (1856), describes anew, so far 
as possible, all the then known fossil Tipulidz, and adds descrip- 
tions of two new forms from amber found in the collection of the 
Leipzig Museum. Concerning Giebel’s 7ipula major and Limnobia 
curtist, see above under Heer’s species Zipula ungeri and Limnobia 
murchisont. The new species are the following : 
Limnobia furcata. Giebel states that in regard to its neuration 
this species belongs to the group containing L. fulvescens, ferrugined, 
bicolor, etc., ¢@. e., to that now classed as Limnophila. The 
description agrees entirely with Limnophila. Giebel may easily 
have overlooked the tibial spurs of which he makes no mention. 
There are no means of determining whether it be not one of the 
numerous Limnophilini mentioned by Loew. 
Limnobia deleta. The single specimen has the wings damaged 
