562 



INDEX. 



Dinobryon sertularia — Continued. 

 Salpingceca minuta found on 



loricse of, 329. 

 undulatum, 323. 

 Dinobryonina?, 323. 

 Dinocharidae, 358, 372. 

 Dinocharis, 372. 

 food of, 351. 

 pocillum, 372. 

 seasonal distribution of, 352. 

 Dinoflagellata, 307, 315, 32Q. 

 diogenes, Cambarus, 340, 342, 542. 

 Diplobdella, 511, 518. 

 Uiplocardia, 449. 

 communis, 442. 

 riparia, 442. 

 singularis, 442. 

 sp. 442. 

 verrucosa, 442. 

 Diplosiga, 328. 



frequentissima, 328. 

 found on rays of Asterionella, 

 328. 

 Discodrilida?, 441. 



note on, 542. 

 Distomidae, encysted and free, in- 

 festing Unionidae, 405, 

 406, 407, 408, 409, 416. 

 geographical distribution 

 of, 414, 415. 

 Distyla, 375, 421. 

 gissensis, 375. 

 hornemanni, 375. 

 ohioensis, 375. 



cultures of, 348. 

 stokesii, 375. 

 diversicornis homoceros, Schizo- 

 cerca, 382. 

 Schizocerca, 382. 

 Dolley, C. S., the Planktonokrit, a 

 Centrifugal Apparatus for the 

 Volumetric Estimation of the 

 Food-Supply of Oysters and 

 other Aquatic 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 Haemopis 

 marmoratis, 527. 

 of Philobdella gracile, 518. 

 of North America, list of, by 

 Garman, cited, 441. 

 ebbesbornii, Asplanchna, 345, 354, 



364. 

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



411, 412, 4131 414- 

 ebenus, Unio, 403. 

 Eclipidrilinae, 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 



Coccidas 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. 

 Eclipidrilidas and their Anat- 

 omy, cited, 471, 474. 



