INDEX. 



557 



Cragin, F. W. — Continued. 



on occurrence ot Hetero- 



cope in North America, 



225. 

 Craspedomonadida?, 328. 

 crassicaudis, Cyclops, 29. 

 cratera, Codonella, 312, 313, 335, 



336, 35 1. 364,365- 

 Difflugia, 336. 

 Crayfishes, examination of, fur Pro- 

 tozoa, 310. 

 Opercularia irritabilis found on, 

 340. 

 Croppie, Anuraea cochlearis eaten 



by, 351- 

 Crustacea, 355. 

 as food of rotifers, 34$. 

 examination of, for Protozoa, 



310, 312. 

 rotifers as food of, 351. 

 Cryptomonadidae, 328. 

 Cryptomonas, 328. 



ovata, 313, 328. 

 Ctenochiton nuytisiae, Fuller on 



validity of, 394. 

 curva, Cothurnia, 341. 

 Cyclodininae, 331. 



Cyclopidae, A Contribution to a 



Knowledge of North American 



Fresh-water, 27-82. (Special 



Index, p. 83.) 



explanation of plates of, 81, 82. 



from high lakes and ponds, 62. 



list of articles consulted in E. B. 



Forbes 's article on, 66-81. 

 list of North American species 



of, 63-65. 

 most abundant species of, in 



Great Lakes, 62. 

 of the Illinois River at the Illi- 

 nois Biological Station, 63. 

 preservative of, 31. 

 specific characters of, 29-31. 

 Cyclops, 27, 28, 31, 63, 97, 100, 105, 

 106, 132, 141, 225, 234, 274, 421. 



Cyclops — Continued. 

 affinis, 29, 31, 65. 

 agilis,29. 

 albidus, 29, 47-49, 62, 63, 64. 



description of, 48. 



distribution of, 48. 



synonymy of, 48. 

 americanus, y], 38, 42. 

 annulatus, ^, 35. 

 ater, 29, 49-51, 62,64. 

 bicolor, 29, 62, 63, 64. 

 bicuspidatus, 29, 3°. 44-47, 53- 

 62, 63, 64. 



description of, 45. 



distribution of, 47. 



synonymical discussion of, 44. 

 bisetosus, 29. 

 brevispinosus, 39, 41. 

 capilliferus, 51. 

 crassicaudis, 29. 

 Diaptomus, and Osphranticum, 



relative hardihood of, loo. 

 dybowskii, 29, 62, 63. 

 edax, 33-36, 62, 63. 



description of, 35. 



distribution of, 35. 



synonymy of, and comparison 

 with other species, 33. 

 . fimbriatus, 29. 



var. poppei, 63, 65. 

 fluviatilis, 57. 

 forbesi, 44, 45. 

 fuscus, 29, 64. 

 general distribution of, in North 



America, 62. 

 gigas, 29, 37. 

 gyrinus, 47, 48. 

 helgolandicus, 29. 

 hyalinus, 29. 

 ingens, 37. 



insectus, 37, 38, 39, 41. 

 insignis, 29, 63. 

 lacustris, 29. 

 leeuwenhoeckii, 34, 35. 

 leuckarti, 29, 31-33, 34, 36, 63. 



