Studies on Tipulidae 1T. 207 
for its gibbose thorax, projeeting over the head. The same, or a very 
similar species, exists in Borneo (Berl. Mus.), in Ceylon, in China, 
in the Arabian desert (Ehrenberg, Berlin Mus.). The most striking 
characters which distinguish this genus are found in the venation. 
The anterior erossvein is placed at the distal end of the discal cell, 
or even beyond; a character unique among the Tipulidae; the 
structure of the marginal and submarginal cells is peculiar; the 
marginal cerossvein (or the vein which oceupies its place) is singularly 
oblique. Thirteen or fourteen joints of the antennae may be counted, 
instead of sixteen, which the genus should have, on account of its 
two submarginal cells. 
Altogether I am in doubt about the position of this singular 
- genus, which requires a closer study than I have been able to give 
to the few scattered specimens which I have seen in different Museums, 
Section IV. Limnophilina. 
I have nothing to add to the generalities in Monogr. ete. IV, 
p. 190—193, except to amend, with regard to the genus Polymera 
what I stated on p. 191, lines 17—32 from top about the structure 
of the penultimate posterior cell. Polymera is an exceptional in- 
stance of a genus of Limnophilina with a normally open discal 
cell, and in which the penultimate posterior cell is formed by a fork 
of the posterior branch of the fourth vein. 
About the fossil genera Tanymera, Tanysphyra, Trichoneur« 
a notice will be found, 1. c. p. 192. 
Calobamon Loew, Bernstein und Bernsteinfauna, p. 36. — Last 
Joint of tarsi short, rostrum shorter than the head, antennae 16-jointed, 
Joints not eylindrical, not attenuate towards the end of the antenna 
two submarginal and four (?) posterior cells, no marginal cross- 
vein. — Represented in the prussian amber by one, rather rare 
species. These scanty data are not sufficient for determining the 
relationship of this genus. I must have seen the type, when I 
examined the amber-diptera in Loew’s house, because I find the da- 
tum of the 16-jointed antennae, not mentioned by Loew, in a Mss. 
note of mine. Still this examination must not have satisfied me, 
because I did not say anything about OCalobamon in my Monograph. 
I place this paragraph here on account of the apparent relationship 
of Calobamon to the Limnophilina. 
For want of a better place I also mention the following genus: 
Neruina Wallengr. Entom. Tidskr. Stockholm 1881, p. 150 and 
197, is based on Limnobia bifurcata Zett. Dipt. Scand. X, p. 3594, 
