MICHIGAN ACADEMY OF SCIENCE. 71 



Lake St. Clair (Reii>hard, '94). 



32. Plcuroj-iis prociircatK.s Birge 



Marquette (Forbes, '!)!), Lake St. Clair (Reighard, '94). 



33. Plcuroxiis ffiarilis uiiidcns Birge 

 Lake St. Clair (Reighard, '94). 



34. ]*ohjphcyiuis pcdiciilus De Geer 



Marquette (Forbes, '91), Lake St. Clair (Reighard, '94). 



35. ^capJioIehcris niucronata O. F. M. 



Marquette (Forbes, '91), Lake St. Clair (Reighard, '94). 



3G. >S'/(/« cri/stdUina O. F. M. 

 Lake Miehigau (Underwood, '86), Marquette (Forbes, '91), Lake St. 



Clair (Reighard, '94). 



37. i^hnoce phalli s scrruJdtiis Koch 

 Lake St. Clair (Reighard, '94). 



38. SimocephaJiis vetulus O. F. M. 



Marquette (Forbes, '91), Lake St. Clair (Reighard, '94). I took this 

 species at "the overflow" at Ann Arbor, Nov. 20, 1909. 



Order Ostracoda. 



39. Cjjpria rsctilpia S. Fischer 



Ann Arbor ( Sharpe, :03). The writer collected this species at Ann 

 Arbor, Dec! 21. 1908 and Nov.' 20, 1909. 



Order Copepoda 

 ^ub-order El'Copepoda 



40. Achtlicns corpulcntus Kellicot^ 

 Michigan (Underwood, '86). 



41. Achthcrcs (unhlyopliiis Kellicot^ 

 Michigan (Underwood, 'S'^). 



42. Canthocamptus miuutus Clans 



Taken at "the overflow," Ann Arbor, Nov. 20, 1909. 



43. CycJops albidiis Jurine 



Lake St. Clair; Chebovgan, Charlevoix, Antrim and Emmet counties 

 (Marsh, '97). 



44. Cyclops atcr Herrick 



Lake St. Clair (Forbes, '97; Marsh, '97), Antrim and Charlevoix coun- 

 ties (Marsh, '97). 



45. Cyclops hicolor Sars 



Lake St. Clair (Forbes, '97; Marsh, '97), Cheboygan Co. (Marsh, '97). 



46. Cyclops hirtispiihtfiis Clans 



Grand Traverse Bay (Forbes, '82 j, Marquette (Forbes, '91), Charlevoix, 

 and Cheboygan counties. Lake Erie, Lake St. Clair, Lake Michigan 

 (Marsh, '97). Taken in Oakland Co. in Walnut Lake, Aug. 25, 1906, 

 at twenty meters; also at Ann Arbor during December, 



47. Cyclops cdax Forbes 

 Marquette (Forbes, "91). 



48. Cyclops fuscus Jurine 



^Parasitic on flsh. 



