1983] 
Burnham — Geraridae 
27 
Fig. 12. Gerarus col/aris, drawing of hind wing, based on holotype YPM 34. 
Synonymy 
G. longicollis YPM 36. Specimen examined. Obverse half. A 
fragmentary specimen. Wings are poorly preserved, and only RS 
and CUA/CUP in the hind wing are visible. This species is syn- 
onymized here with G. collaris on the basis of its prothorax, which 
is small and tapers gradually from the posterior to the anterior end, 
as it does in all known members of G. collaris. 
New Material 
USNM 38835. Obverse half. Only the base of the wings and the 
prothorax are preserved in this small specimen. The prothorax, 
which bears at least six spine bases, is clearly narrow and elongate, 
and is the reason for including this specimen in G. collaris. 
Gerarus fischeri 
Figures 14, 15, 16 and 17 
Sihenaropoda fischeri ^xongmdLXi 1885:59; Handlirsch 1906a:142, 1919:38. 
Oedischia fischeri Brongniart 1894:559. 
Sihenaropoda lerichei Lameere 1917:178. new synonymy. 
Sihenaropoda agnusi Lameere 1917:178. new synonymy. 
Description 
Fore wing: length 40-50 mm, width 14-15 mm; SC parallel to C 
turning upward to fuse with it at point that is two-thirds length of 
wing; R parallel to C, terminating at wing apex; both SC and R 
connecting to C and SC respectively by numerous sigmoidal cross 
veins; RS diverging from R at midpoint of wing and branching 
twice; M originating at base of R, anastomosing with RS basally 
before branching off and forking once; CUP forked, originating 
