590 



INDEX 



Tokophrya — Continued. 



food of, 311. 



quadripartita, 339, 341. 



found attached to small ani- 

 mals, 342. 

 method of preservation of, 310. 

 torta, Euglena, 313, 324. 



Trachelomonas, 326. 

 Tracheliidcg, 331. 

 Trachelomonas, 274, 325, 420. 



acuminata, 313, 325. 



armata, 325. 



caudata, 313, 325. 



hispida, 326. 



torta, 326. 



urceolata, 326. 

 Trematode, 404, 406. 

 Triarthra, 346, 367, 421. 



longiseta, 367. 

 seasonal distribution of, 352. 



terminalis, 354, 355- 3 6 7- 

 Triarthridae, 358, 366. 

 Trichodina, 337. 



pediculis, 337. 



frequent on Hydra viridis, 



337- 



Trichomytilus as new genus for 



certain species < >t Mytilaspis, 397. 

 Trichostomata, 307, 316, 332. 

 trigona, Quadrula, 401, 403, 409, 



410, 412, 413, 414. 

 trigonus, Unio, 403. 

 triptera, Metopidia, 377. 

 tripus, Notommata, 369. 

 triqueter, Phacus, 326. 

 triquetra, Euchlanis, 374. 

 triserialis, Glossiphonia, 493. 



Helobdella, 493. 

 Trochosphaera, 356, 361. 



solstitialis, 362. 

 truncata, Lacrymaria, 330. 

 Trybom, F., 154, 160. 

 trybomi, Diaptomus, 98, 112, 120, 

 • 158, 166, 183. 

 tuberculata, Philodina, 363. 



tuberculata — Con tin tied. 



Quadrula, 401, 403, 408, 409, 410, 

 412, 413, 415, 416. 

 tuberculatus, Unio, 403. 

 tuberculosa, Difflugia, 313, 320. 

 Tubifex rivulorum, 442. 

 description of, 444. 

 Tubificidae, 445- 447. 44$, 450, 45 '. 

 452, 453. 454. 456. 

 description of, 443-456. 

 found in Illinois, 442. 

 1 llinois, Descriptions of, and List 

 of Species of North American 

 Oligochseta found in Illinois, 



44I-45 8 - 

 Tubificid worms found in caeca of 

 Macrobdella decora, 511. 

 found in stomachs of Dina mi- 

 crostoma, 541. 

 turgida, Allolobophora, 442. 

 Turner C. H., and Herrick, C. L.« 

 Synopsis of the Entomostraca of 

 Minnesota, cited, 37, 38. 

 Turtles attacked by Macrobdella, 

 511. 

 examination of, for Protozoa, 310, 

 312. 

 Tyrrell, J. B., 177. 



tyrrelli, Diaptomus, 99, 108, 119, 160, 

 176, 184. 



U 



Underwood, L. M., List of the de- 

 scribed Species of Fresh-water 

 Crustacea from America North 

 of Mexico, cited, 97. 

 undulata, Alasmodonta, 401, 403, 

 409. 

 Margaritana, 403. 

 uniangulatus, Cyclops, 39, 41. 

 unicornis, Conochila, 354, 362. 

 Unio alatus, 403. 

 anodontoides, 403. 

 C on ch o ph t h i rus anodontse 

 found among gills of, 333. 



