ENTOMOSTRACA OF MINNESOTA. 275 



Alona affliiis Leydig. 

 Alona affinis—C. L. Herrick, Final Report on Minn. Crust., p. 98; PI. F, Fig. 14. 



Length 0.79 mm.; height 0.46 mm. The specimens here tabulated 

 are smaller than those found by other writers; but since they agree in 

 all essentials with A. affinis they are placed here. In all probability 

 they are immature individuals. Habitat: Kent county, Delaware; 

 Fayetteville, Georgia. 



Alona porrecta Birge. 

 Alona porrecta — E. A. Birge, Notes on Clad., p. 29; PI. I, Fig. 16. 



Length 0.37 mm. to 0.58 mm.; height 0.22 mm. to 0.24 mm. Habi- 

 tat: Atlanta, Georgia; Cincinnati, Ohio. 



Alona glacialis Birge. 

 Alona glacialis—E. A. Birge, Notes on Clad., p. 30. 

 Habitat: Cincinnati, Ohio. Eare. 



Alona intermedia Sars. 



Alona intermedia— Q. L. Herrick, Final Report Minn. Crust., p. 101; PI. I, Fig. 15. 

 Habitat: Cincinnati, Ohio. 



GENUS PLEUROXUS Muller. 

 Pleuroxiis acutirostris Birge. 

 PleurnxuH actitiroslris—E. A. Birge, Notes on Clad., p. 23; PI. II, Fig. 15. 



This species seems to be very rare. I have only encountered it 

 -once. Then it was associated with Pleuroxus hamatus Birge, which it 

 closely resembles in shape. The specimen resembled in all respects 

 the specimens described by Professor Birge. Habitat: Atlanta, 

 Georgia. 



Pleuroxus hamatus Birge. 

 Pleuroxus hamatus— E. A. Birge, Notes on Clad., p. 22; PI. II, Figs. 13, 14. 



Length 0.46 mm. to 0.52 mm.; height 0.23 mm. to 0.33 mm. Habi- 

 tat: Cincinnati, Ohio; Atlanta, Georgia. In the northern part of 

 Georgia specimens of this species are more plentiful than those of any 

 other member of this genus. 



Pleuroxus tlenticulatus Birge. 



Pleuroxus denticulatus — E. A. Birge, Notes on Clad., p. 20; PI. I, Fig. 21. 



Length 0.57 mm.; height 0.43 mm. Habitat: Cincinnati, Ohio; 

 Kent county, Delaware; Atlanta, Georgia. 



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