BY FREDERICK A. A. SKUSE. 
1153 
further examination, be found to more properly occupy some of 
the numerous genera subsequently established by Winnertz, many 
of which latter are dismemberments of some of the older divisions, 
and are based upon characters liable to be overlooked by authors 
who do not think it worth while to give details of structure a 
careful and close scrutiny. 
Dr. Schiner(“Novara-Expedition,” 18b8, p. 10)makesafew obser- 
vations upon the geographical distx’ibution of the group, and esti- 
mates the then known numberof accepted genera at 48*, the species 
amounting to 694 ; in both these totals, however, he includes all 
those species now placed in the separate family Sciaridse, while on 
the other hand he does not include his new genus Psei(,dosciara 
and five other new species (four of them Sciara) enumerated in 
his pages which follow. Deducting from the above the species 
attributed to the Sciaridie, the genera would number 46 and the 
species about 450 ; and the only established genera, which up till 
that time were not known in Europe, were Cnefliceo-phila, 
Diomonus, Flatymptilon and Pseudosciara, all created for 
American species. Since then (in 1869) Loew added his genus 
Eudicrana from North America, and this, with the above four, 
are still unknown in Europe or elsewhere out of America. To the 
European genera accepted by Schiner in 1868 six have since been 
added. In the present contribution nine new genera are named, 
but it is difficult to say that they may not have representatives 
elsewhere. As far as I can ascertain no ]\Iyceto})hilid?e have been 
yet recorded from Africa, but no one of course for one moment 
entertains the thought that they may not occur there ; some genera 
of the Cecidornyidie and six of Sciara are known, which difier 
very little from the European forms, and possibly many, or may 
be most, of the generic forms of the Mycetopliilidie prevail there. 
Mycclophila, besides being recorded fiom Europe, Noidh and South 
America and Australia, occurs, according to Prof. Hutton, in New 
Zealand ; this author also describes an insect under the genei ic 
This does not include Loew’s four fossil genera. 
