INDEX. 



569 



Helobdella triserialis, 493. 

 Hemiclepsis, 498. 

 carinata, 498-504. 



alimentary canal, cnlc)r, habits, 

 and reproductive organs of, 



503- 



annuli and somites of 500-503. 



diagnosis and general descrip- 

 tion of, 498-500. 



found attached to frogs and 

 toads and in shells of living 

 mussels, 504. 

 Hemitubifex, 456. 

 Hempel, Adolph, 28, 31, 98, 148, 

 175, 176, 459. 475- 



A List of the Protozoa and 

 Rotifera found in the Illinois 

 River and Adjacent Lakes 

 at Havana, 111., 301-388. (See 

 Hart, C. A.) 

 hemprichii, yEoIosoma, 443. 

 Henfrey, A., Notes on some Fresh- 

 water Confervoid Algae New 

 to Britain, cited, 274. 



on arrangement (jI cells in 

 Eudorina, 274. 

 Hensen, V., i, 3. 



Methodik der Untersuchung 

 bei der Plankton-Expedi- 

 tion, cited, 2. 



Ueber die Bestimmung des 

 Planktons oderdes im Meere 

 treibenden M a t e r i a Is an 

 Pflanzen und Thieren, cited, 



2, 13- 



herculeus, Lumbricus, 441. 



Herdman, W. A., Thompson, I. C, 

 and Scott, Andrew, On the Plank- 

 ton collected continuously dur- 

 ing two Traverses of the North 

 Atlantic in the Summer of 1897 ; 

 with Descriptions of New Co- 

 peptjda ; and an Appendix t)n 

 dredging in Puget Sound, cited, 

 226. 



herdmani, Eurytemora, 226. 

 Herpobdella, 532. 

 Herpobdellidae, 532. 

 Herrick, C. L., 28, 38, 39, 45. 



A Final Report on the Crus- 

 tacea of Minnesota, cited 

 132, 135, 182, 225, 266. 



Contribution to the Fauna of 

 the Gulf of Mexico and 

 the South. List of Fresh- 

 water and Marine Crus- 

 tacea of Alabama, with 

 Descriptions of the New 

 Species and Synoptical 

 Keys for Identification, 

 cited, 225, 266. 



A New Cyclops, cited, 97, 

 132. 



descriptions and figures of 

 Epischura lacustris, cited, 

 263. 



descriptions and figures of 

 Epischura fluviatilis cited 

 and discussed, 266, 267. 



description of D i a p t o m us 

 novamexicanus (compiled 

 by Schacht), 149-151. 



description of Potomoiche- 

 tor fucosus cited, 233. 



Habits of Fresh-water Crus- 

 tacea, cited, 135. 



Heterogenesis in the Co- 

 pe pod Crustacea, cited, 

 267. 



Heterogenetic Development 

 in Diaptomus, cited, 266. 



Micro-Crustacea from New 

 Mexico, cited, 151. 



Microscopic Entomostraca, 

 cited, 132, 146. 



on color of Cyclops prasinus, 



59- 

 on color of Diaptomus min- 

 netonka and D. sanguin- 

 eus, 138. 



