216 



FRESH-WATER NEREIDS FROM THE PACIFIC COAST AND HAWAII. 



VI. GENERAL CONSIDERATIONS. 



Within the past two years several short papers on fresh-water Polychseta have 

 appeared, interest in the subject having been aroused by the publication of Nus- 

 baum's account(:01) of two new sabellids from Lake Baikal^ (Dybowscella baicalen- 

 sis, D. godlewskii). By the addition of these, of Saint- Joseph's (:01) Lycastis 

 senegalensis, of Gravier's (:01) three French-Guiana species, and of the three herein 

 described, the list of fresh- and brackish-water Polychseta has rapidly lengthened. 

 The euryhaline * species at present recorded are the following : 



Name. 



Habitat. 



Medium. 



Authority. 



Eunicidx. 

 Lumbriconereis sp 



Nereidse. 

 Nereis sp 



Nereis sp 



N. culveri Webster. . 



N. diversicolor O. F. 

 ler.. 



Miil- 



N. linnicola sp. nov 



N. virens M. Sars -j 



Perinereis longipes St. 

 Joseph 



P. cultrifera Grube -j 



Platynereis dumerilii Aud. 

 et M.-Edw. . 



Lycastis quadraticeps Gay | 



L. senegalensis St. Joseph . . 



L. ouanaryensis Gravier. . -j 



L. geayi Gravier. . . . 

 L. hawaiiensis sp. nov 

 Lycastoides alticola 

 nov., sp. nov 



Spionidae. 

 Polydora ciliata Johnston. . 



Capitellidae. 

 Eisigella ouanaryensis 



Gravier 



Sabellidse. 

 Manayunkia speciosa 



Leidy 



Haplobranchus ssstuarinus 



Bourne 



Caobangia billeti Giard. . . . 

 Dybowscella baicalensis | 



Nusbaum i 



D. godlewskii Nusbaum. . . . 

 Fabricia stellaris Blain- 



ville. . 



Island of Trinidad 



Lake Palaeostrom, Mingrelia 

 Island of Trinidad 

 Coast of New Jersey 



European coasts (Der 

 Frische Haff, Konigsberg) 



Lake Merced, Cal. 



Northern coasts, Europe and 

 N. A. (Charles R., Mass.) 



Coast of France (R. la Vie, 

 Vendee) 



Mediterranean; European 

 coasts 



Coasts of Europe 



Chiloe (Chile); Str. of Ma- 

 gellan 

 Senegal R., W. Africa 



Fresh water 



Fresh water 



coast and 



French Guiana 



Ouanary R. 

 Ouanary R. 



Hawaiian Islands (Honolulu) 

 gen. 1 Sierra Laguna, Lower Cali- 

 fornia (7000ft). 



Cosmopolitan 



Ouanary R., French Guiana 



Schuylkill R., Pa.; Absecom 



Pd., N. J. 

 Estuaries of Thames and 



Liffey 

 Tonquin 



Lake Baikal 



Coasts of Europe and ) 

 North America ) 



(Seawater; brackish(?) 

 j water; fresh water(exper.) 

 Marine; brackish water; sa- 

 lines ; fresh water (exper.) 

 Fresh water; sea-water 



(exper.) 



Marine; brackish; fresh 

 water (exper.) 



[-Marine; brackish 



Marine ; brackish water 



Marine; brackish; fresh ) 

 water j 



Brackish water. 



Marine; brackish; fresh ) 

 water ) 



Fresh water 



Fresh water 



> Fresh water 



Marine; brackish water; I 

 salines. J 



Fresh water 



Fresh water; sea-water (ex- 

 per.) 



I Brackish water 

 Fresh water 

 Fresh water 



Marine; fresh water (exper.) 



von Kennel, '83. 



Leuckart (teste Gravier, 



:01). 

 von Kennel, '83. 



Webster, '79. 



Mendthal, '90; Nusbaum, 

 :01"; Gravier, :01". 



Johnson. 



Hamaker, '98; Johnson. 

 Gravier, :01 b . 

 Gravier, :01 b . 

 Gravier, :01 b . 



Ehlers, '97, :01. 

 Saint Joseph, :01. 

 Gravier, :01. 



Gravier, :01. 

 Johnson. 



Johnson. 

 Gravier, :01 b . 



Gravier, :01. 



Leidy, '59, '84; Moore 

 (unpub.). 



Bourne, '83. 

 Giard, '93. 

 Nusbaum, :01. 

 Nusbaum, :01. 

 Moore (unpub.). 



* This convenient term has been introduced by Moebius to designate forms capable of enduring considerable 

 change in the salinity of the water. Its opposite is " stenohaline." 



