INDEX 



abnormipes, Atax, 408. 

 Acanthodrilidae, 444. 



found in Illinois, 442. 

 Acineta, 342. 



food of, 311. 



mystacina, 342. 

 food of, 342. 

 Acinetidse, 341. 

 Actinastrum, 421. 



Actinobdella, generic characters 

 of, 504. 



inequiannulata, 504-508. 



annuli and somites of, 506 508. 

 color of, 508. 

 diagnosis of, 504. 

 general description of, 504-506. 

 Actinophrys, 321. 



sol, 313, 322. 

 Actinosphaerium, 322. 



eichhornii, 313, 322. 

 Actinurus neptunius, 363. 

 aculeata, Anursea, 353, 355, 383. 



Centropyxis, 320. 



Difflugia, 313, 314,320. 



valga, Anursea, 383. 

 acuminata, Difflugia, 313, 319. 



Metopidia, 377. 



Notholca, 353, 355, 383. 



Trachelomonas, 313, 325. 

 acus, Euglena, 313, 324. 

 Adinetidae, 357. 

 jEolosoma, 443. 



hemprichii, 443. 



tenebrarum, 443. 

 ^olosomatidce found in Illinois, 



443- 

 affinis, Cyclops, 29, 65. 



Temora, 225. 



Temorella, 225. 



agilis, Cyclops, 29. 



Fridericia, 442. 

 Alasmodonta, capacity for infesta- 

 tion exhibited by, 414. 

 complanta, 401, 403. 



parasites of, 409, 410, 412, 416. 

 confragosa, 401, 403,412. 



parasites of, 409, 410. 

 marginata, 401, 403. 



parasites of, 408, 409, 410, 412, 

 416, 417. 

 rugosa, 401, 403, 410, 412. 



parasites of, 408, 409, 410. 

 tappaniana, 401, 403. 



parasites of, 409. 

 undulata, 401, 403. 

 parasites of, 4oq. 

 alatus, Lampsilis, 401, 403, 408, 409, 

 410,412, 413, 414, 416. 

 Unio, 403. 

 albidus, Cyclops, 29, 47, 62, 63, 64. 

 alboflavicans, Megalotrocha, 361. 

 albuquerquensis, Diaptomus, 98, 

 101, 113, 115, 146, 176, 183, 184. 

 Algae eaten by Monostyla cornuta, 



375- 

 filamentous, as food of Euchla- 



nis, 374. 

 alienum, Lecanium hesperidum, as 

 located on authority of Green, 



3Q3- 

 alveolata, Euglypha, 321. 

 Allolobophora, 449. 



as food of Philobdella gracile, 

 518. 



caliginosa trape/.oides, 442. 



foetida, 441. 



giesleri, 442. 



mucosa, 441. 



profuga, 441. 



