Q74 GEOL. AND NAT. HIST. SURVEY OF MINNESOTA. 
but the more I study this species the more I am led to believe that 
this and J. spinifer are varieties of one and the same species. If this 
surmise be true then Professor Herrick’s name has precedence. 
FAMILY LYNCEIDE. 
SUB-FAMILY EURYCERCINEE. 
GENUS EURYCERCUS Baird. 
Eurycercus lamellatus O. F. Miller. 
Eurycercus lamellatus—C. L. Herrick, Final Report Minn.Crust., p. 80; Pl. H, Figs. 5, 6. 
Length 1.67 mm.; height 1.16 mm. Habitat: Kent county, Dela- 
ware. 
SUB-FAMILY LYNCEINE. 
GENUS CAMPTOCERCUS Baird. 
Camptocercus macrurus O. F. Miller. 
Camptocercus macrurus—E. A. Birge, Notes on Clad., p. 33. 
The specimen here tabulated under this genus is smaller than those 
found by Professor Birge in Wisconsin and by Professor Herrick in 
Minnesota; but, since they agree with Professor Herrick’s description 
in all other respects, it is thought that this is the right place for it. 
Habitat: Lockland, Ohio. Length 0.63 mm.; height 0.42 mm. 
GENUS LEYDIGIA Kurz. 
Leydigia quadrangularis Leydig. 
Leydigia quadrangularis—C. L. Herrick, Final Report Minn. Crust., p. 88; Pl. H, Fig. 4 
Length 1.00 mm.; height 0.5mm. Habitat: Clifton, Ohio; Lock- 
land, Ohio; Atlanta, Georgia. 
GENUS DUNHEVIDIA King. 
Dunhevidia Setiger Birge. 
Crepidocercus setiger—E. A. Birge, Notes on Clad., p. 26; Pl. I, Fig. 18. 
Length 0.43 mm.; height 0.831 mm. Habitat: Cincinnati, Ohio. 
GENUS ALONA Sars. 
Alona quadrangularis Miller. 
Alona quadrangularis—C. L. Herrick, Final Report Minn. Crust., p. 97; Pl. E, Figs. 1, 2. 
Length 0.76 mm.; height 0.46 mm. In the specimen here assigned 
to the above named species the pigment fleck is as large as the eye 
and the spine on the terminal claw of the post-abdomen is pectinate 
at its base. Habitat: Baxley, Georgia. 
