38 
Psyche 
[Vol. 90 
Fig. 2 \ .Geneniumuni valiJuni, photographs of holotype no. USNM 38135. a. fore 
wing. Length 42 mm, as preserved, b. hind wing. Length 40 mm, as preserved. 
Hind wing: length 40 mm, width 14 mm; SC and R as in fore 
wing; RS four-branched, originating from R near wing base. 
Remarks 
Originally described by Scudder as a member of the Homothetidae 
(Neuroptera), this species was subsequently transferred to the family 
Oedischiidae by Handlirsch (1906b) on the basis of M, which 
anastomoses with RS in the fore wing. Of course Handlirsch had no 
idea that this character is also found throughout the Geraridae. My 
inclusion of Genentomum in the Geraridae is based on the study of 
all major veins and these are completely consistent for the family. 
Geological range: Westphalian D. Occurrence: Mazon Creek, 
Illinois, U.S.A. 
Holotype: USNM 38135. Specimen examined. Obverse and 
reverse halves. Both fore and hind wings are preserved, although the 
apex of the fore wing extended beyond the edge of the concretion 
