ENTOMOSTRACA OF MINNESOTA. 273 



Bosmina atlantaensis Turner. 



Bosmina atlantaensis — C. H. Tamer, Notes on the Clad, of Ga., p. 23; PI, VII, Figs. 



12, 13. 



Length 0.46 mm.; height 0.36 mm. Habitat: Atlanta, Georgia. 

 Obtained in the middle of winter from pools that dry up in dry 

 weather. 



FAMILY LYNCODAPHNIDJ:. 



GENUS MACROTHRIX Baird. 



Macrotlirix laticornis Jurine. 



Macrothrix laticornis — C. L. Herrick, Final Report Minn. Crust., p. 68; PI. C, Figs. 8, 9. 



Length 0.37 mm. to 0.39 mm.; height 0.25 mm. Habitat: Atlanta, 

 Georgia. 



GENUS ACANTHOLEBERIS Lilljeborg. 



Acantholeberis curvirostris Miiller. 



Acantholeheris curvirostris — C. L. Herrick, Final Report Minn. Crust., p. 73. 



Length 0.97 mm.; height 0.61 mm. Habitat: Baxley, Georgia. 



GENUS ILYOCRYPTUS. 



Ilyocryptiis sorditlus Lievin. 



European observers have never found more than a few specimens 

 of this species at any one time. At two different times this summer 

 I have found this species in great numbers in the mud at the bottom 

 of a small pool on the Clark University campus at South Atlanta, 

 Georgia. This pool is a tank about four feet deep, fed by a cool spring. 

 At one end a shallow grassy creek flows outward from it. This creek 

 at its origin is less than a foot deep and has a mud bottom. In this 

 creek, at its source, is where the specimens were obtained. The 

 American specimens tally in all essential respects with the European 

 specimens. Habitat: South Atlanta, Georgia. 



Ilyocryptus longireiniis Sars. 



llyocryptus longiremus — E. A. Birge, List of Crust. Clad, from Madison, Wis., p. 392; 

 PI. XIII, Fig. 18. 



This species agrees in all essential respects with the species found 

 by Professor Sars in Australia and by Professor Birge in Wisconsin. 

 Habitat: Baxley, Georgia. It seems to be present in almost all of the 

 ponds near Baxley. 



This species is very closely related to IJyocryptus spinifer Herrick. 

 At one time I was fully convinced that they were two distinct species, 



