562 



Dinubryon sertularia — Continued. 

 Salpingoeca minuta found on 



loricae of, 329. 

 uiidulatum, 323. 

 Dinobryoninae, 323. 

 Dinocharidic, 358, 372. 

 Uinocharis, 372. 

 food of, 351. 

 pocillum, 372. 

 seasonal distribution of, 352. 

 Dinoflagellata, 307, 315, 32Q. 

 diogenes, Cambarus, 340, 342, 542. 

 Diplobdella, 511, 518. 

 Diplocardia, 449. 

 communis, 442. 

 riparia, 442. 

 singularis, 442. 

 sp. 442. 

 verrucosa, 442. 

 Diplosiga, 328. 



freciuentissima, 328. 



found on rays of Asterionella, 

 328. 

 Discodrilidie, 441. 



note on, 542. 

 Distomidae, encysted and free, in- 

 festing Unionidae, 405, 

 406, 407, 408, 409, 416. 

 geographical distributii ui 

 of, 414, 415. 

 Uistyla, 375, 421. 

 gissensis, 375. 

 hornemanni, 375. 

 ohioensis, 375. 



cultures of, 348. 

 stokesii, 375. 

 diversicornis homoceros, Sciiizo- 

 cerca, 382. 

 Schizocerca, 382. 

 DoUey, C. S., the Planktonokrit, a 

 Centrifugal Apparatus for the 

 Volumetric Estimation of the 

 Food-Supply of Oysters and 

 other Acjuatic Animals, cited, 

 20. 



donaciformis, Plagiola, 401, 403, 

 409, 410, 412, 416. 



Unio, 403. 

 dorcas, Brachionus, 353, 354, 379. 



spinosus, Brachionus, 354, 379. 

 dossuarius, Conochilus, 354, 362. 

 drieschi, Diaptomus, 99. 

 Dufour & Company, 3. 

 dybowskii, Cyclops, 29, 62, 63. 



Earthworms as food of Ha?nK)pis 

 marnioratis, 527. 

 of Philobdella gracile, 518. 

 of North America, list of, by 

 Garman, cited, 441. 

 ebbesbornii, Asplanclnia, 345, 354, 



364. 

 ebena, Quadrula, 401, 403, 409, 410, 



411, 412, 413- 414- 

 ebenus, Unio, 403. 

 Eclipidrilinas, distinguishing char- 

 acters of, 474. 

 Eclipidrilus, 462, 468, 471, 475. 

 frigidus, 460, 465, 466. 



circulatory system of, 474. 

 Mesoporodrilus asymmetricus, 

 and Premnodrilus palustris 

 compared, 472, 475. 

 edax, Cyclops, 33, 62, 63. 

 edentula, Anodonta, 403. 

 edentulus, Strophitus, 401, 403, 406, 



409, 410, 412, 413, 416. 

 Ehrhorn, E. M., descriptions of 



Coccidae by, cited, 390. 

 Eisen, G., 155, 162, 164, 166, 178, 



475- 



Anatomical Notes on Sutroa 

 alpestris, a New Lumbricu- 

 lide Oligochaste from Sierra 

 Nevada, California, cited, 

 471. 



Eclipidrilidie and their Anat- 

 omy, cited, 471, 474. 



