Figure 1 . Lithotiphia scudderi Cockerell, holotype, no. 2022, Museum of Com- 
parative Zoology, Harvard University. Wing cells are lettered. Scale line in all fig- 
ures, 3 mm. 
species and I hesitate to create another new genus on a sole charac- 
ter. The following is a descriptive account of the species in these two 
genera. The details shown in the figures are generally not described 
below. 
Lithotiphia scudderi Cockerell 
Figure 1 
Lithotiphia scudderi Cockerell, 1906, p. 51 
Body length, 12.3 mm; fore wing length, about 5 mm (Length is 
measured here from base to apex of cell 3r). Gastral terga with light 
spots. Integumental sculpture not discernible because of covering 
by Canada balsam. Holotype: M.C.Z. no. 2022. 
