586 



l\(itifcra — Contiiutcd. 

 as fodd of Protozoa, 311. 

 diagram of types of troi)hi of, and 



a summary of their distiugui?li- 



ing features, 344, 345. 

 eggs of, 347. 

 food of, 324. 



cjuantity of, 345. 



relations of, 350. 

 geographical distribution of, 350. 

 littoral and pelagic forms of, 



353- 

 local distribution of, 353 355. 

 methods of capture and study of, 



348-350- 

 modes of locomotion, 356. 

 seasonal distribution of, 351 353. 

 synopsis of the families of, 356 



350- 

 \itality of, 347. 



geographical distribution of, 350. 

 roubaui, Diaptonius, 166. 

 Roussclet, C. F., 350. 



On a Method of ]ireser\ing 



Rotatoria, cited, 304. 

 Second Note on a Method of 

 p r e s e r \- i n g Rotatoria, 

 cited, 304. 

 rubens, Brachionus, 37g. 

 rubiginosa, Ouadrula, 401, 403,406, 



4oq, 410, 412, 414. 

 rubiginosum, C(elostoma, 300. 

 rubiginosus, Tnio, 403. 

 riigosa, Alasmodonta, 401, 403, 408, 

 40q, 410, 4I-^. 

 Margaritana, 403. 

 Operculari.i, 340. 

 Placobdella, 481,482, 484, 487. 



Sacculus, 366. 



\iridis, 366. 

 Sagittaria, 302. 



variabilis, 444. 

 salinus, Diaptonuis, 98 



Salpina, 373. 

 eustala, 373. 



seasonal distribution of, 352. 

 .Salpingceca, 32Q. 

 minuta,32q. 



found on lorica? of l)inol)ryon 

 sertularia, 329. 

 Salpingtccina?, 329. 

 Salpinidas, 358, 373. 

 saltator, Pedetes, 368. 

 sanguineus, 1) i a p to m u s, 07. 1 12, 



117, 129, 133, 160, 166, 183, 234. 

 sanguisuga, Hgemopis, 531. 

 Sarcodina, 305, 306, 314, 317. 

 Sars, (i. ()., 29, 31, 37, 98, 22g, 236, 

 242. 

 on second pair of anteniue 

 of Limnocalanus macrurus 

 and of L. grimaldii, 236. 

 Oxersigt af de indenlandske 

 Fe rsk va nds copejioder, 

 cited, 236, 242. 

 Pelagic I'^ntomostraca of the 

 Caspian Sea, cited, 242. 

 Sav, Thomas, Xarrati\e of Fxpe- 

 dition to the Source of the St. 

 Peter's River, etc. Appendi.x of 

 \'ol. 11., cited, 509, 532. 

 Scaridium, y]^. 



longicaudum, 373. 

 .Scenedesmus, 421. 

 Schacht, F. W., 31. 



The North American Cen- 

 tropagidie belonging to the 

 Genera Os ph ra n t i cum, 

 Limnocalanus, and Epi- 

 schura, 225-26(). (Special 

 index, \). 270.) 

 The North American Species 

 of I) i a ]) t o m u s, 97-207. 

 (Special index, 208.) 

 Schcwiakoff, Wl., lU'ber die geo- 

 graphische \'crbreitung der 

 .Si'isswasser-Rroto/ocn, cited, 

 320, 340. 



