216 BIOLOGICAL SURVEY OF 



Tribe ANOMOPODA 



Daphniidae 

 ScAPHOLEBERis Schodler 

 S. MUCRONATA (O. F. Miiller). (Birge, 1918, p. 699, fig. 

 1076.) Very common in the small temporary pond desig- 

 nated as S 22. 



Macrotliricidae 

 Ophryoxus G. 0. Sars 



0. GRACILIS G. 0. Sars. (Birge, 1918, p. 708, fig. 1100.) 

 Quite common at S 23, near shore. The first record for New 

 England. 



AcANTHOLEBERis LlUjeborg 

 A. cuRviRosTRis (0. F. Miiller). (Birge, 1918, p. 710, fig. 

 1105.) Two found at S 23. 



Ilyocryptus G. 0. Sars 



1. spiNiFER Herrick. (Birge, 1918, p. 713, fig. 1110.) Taken 

 with the preceding species and in Witch Hole Pond. 



Chydoridae 



Chydorinae 



Acroperus Baird 



A. HARPAE (Baird). (Birge, 1918, p. 719, fig. 1121.) It is 



very doubtful if A. angustatus G. 0. Sars can be maintained 



as a distinct species. A fairly common species. Station : S 23. 



Alona Baird 

 A. APFiNis (Leydig). (Birge, 1918, p. 723, fig. 1130.) Sta- 

 tions : S 23 and Sargent Mountain Pond. 



A. RECTANGULA G. 0, Sars var. pulchra Hellich. (Birge, 

 1918, p. 723, fig. 1129f.) Not very common. Sargent Moun- 

 tain Pond. 



Graptoleberis G. 0. Sars 

 G. TESTUDiNARiA (Fischcr). (Birge, 1918, p. 724, fig. 1132.) 

 Rare, at S 23. 



