236 Trans. Acad. Sct. of St. Louis 
Lepidophora lepidocera Weid. [C. T. Greene]. 
This parasite was present at the clay bank on July 1, 
1922. It was often seen bobbing up and down on the 
wing before the burrows, but if eggs were dropped in 
the process, none were ever discovered. 
Parasitic Beetles. 
Hornia minutipennis Riley [E. ‘A. Schwarz]. This 
beetle, which is parasitic upon the mining bees, was 
found only twice at the clay bank. One was taken at the 
base of the bank on May 27, 1920; it deposited many 
eggs in captivity the next day, and died soon after. An- 
other was taken from the cell of A. abrupta on October 
2, 1920; it emerged in the warm laboratory on March 
19, 1921, promptly ate of a piece of apple and consumed 
part of an Anthophora larva which was given it; the re- 
mainder of the larva it allowed to dry up. It lived five 
weeks. 7 
C. V. Riley* describes this species from specimens 
reared from the cells of Anthophora sponsa taken from 
elay banks near St. Louis. Piercet tells us that the 
genus Hornia is known to be parasitic on Hymenoptera; 
the larvae are conveyed to the host by some other insect 
—that is, they are passively conveyed. Their feet are 
specialized for clinging, not digging. Their food is 
generally honey; hence the mouth parts are reduced. 
Hornia shows degeneracy in the adult stage with com- 
plete loss of the wings, and almost entire reduction of 
the elytra. 
Fabret has found a parasitic beetle, Sitaris humeralis 
*Trans. Ent. Soc. St. Louis, 3:563-565. 1877. 
Univ. Nebraska Studies, 4:153. 1904. 
arp, Insects. Pt. II, p. 272. 
