22 Crust , 
IX. Crustacea. 
Chydorus mutilus sp. n. Alpine Lakes 
p. 272 figs., Kreis Intern. Rev. Hydro- 
biol Leipzig 9 ; C . ovalis p. 125 text- 
figs., Herr 78. 
Daphnia spp. morphology pp. 343- 
393, pp. 419-462 text-figs., Haack 72, 
D. atlcinsoni p. 12 text-fig. intersexes 
p. 18, La Vaulx 94 ; D. pulex var. 
gibbosa, var. obtusa p. 43, longispina 
p. 47, cucullata p. 52, text-figs., Herr 
78. 
Drepanothrix dentata p. 82 text- fig., 
Herr 78. 
lliocryplus p. 529 key to spp. p. 536 
pis. i-ii, aculifrons, agilis, silvae-ducensis, 
sordidus p. 536, Romijn 133 ; I. sordidus 
p. 68, agilis p. 72, acutifrons p. 74, 
text-figs., Herr 78. 
Rhynchotalona falcata p. 112 text-fig. 
Herr 78. 
Simocephalus lusaticus sp. n. Saxony 
p. 58 text-figs., Herr Abh. natf. Ges. 
Gorlitz 28. 
COPEPODA. 
Busch 23 ; Er uchtl 60 ; Gurney 
70, 71 ; Klie 85 ; Klugh 86 ; Lys- 
holm & Nordgaaru 101 ; Pearse 117 ; 
von Ubisch 162 ; Willey 173. 
]Copepoda, Bell 13. 
Acartia spp. Gianferrari 62; A. 
clausi p. 487 text-fig, Fruchtl 60 ; 
A. ( Odontacartia ) pacifica p. 255 text- 
figs., Steuer 151. 
Acontiophwus ornatus p. 109 pi. lxxii, 
Sars 138. 
Achtheinus denlalus sp. n. California 
]). 6 pi. iii, Wilson Proc. U.S. Nat. Mus. 
59. 
Agnathaner typicus p. 39 pi. xix, 
Saks 138. 
Alebionfuscus sp. n. Woods Hole p. 2 
pis. i, ii, Wilson Proc. U.S. Nat. Mus. 
59. 
Anomopsyllus gen. n. incert. sedis 
p. 81 pranizioides sp. n. Norway p. 82 
pi. xxxvii, Sars Crust. Norw. 8. 
Argestes tenuis sp. n. Norway p. 95 
pi. lxvii, Sars Crust. Norw. 7. 
Ascidicola rosea p. 64 pi. xxxi, Sars 
138. 
[1921] 
Blakeanus gen. n. (near Doropygus 
and Buprorus) p. 10, corniger sp. n. 
Long Island p. 11 pi. v, Wilson Proc. 
U.S. Nat. Mus. 59. 
Botachus cylindratus p. 59 pi. xxix, 
Sars 138. 
Botryllophilus brevipes sp. n. Nonyay 
p. 68 pi. xxxiii, Sars Crust. NorW. 8. 
Buprorus loveni p. 62 pi. xxx, Sars 
138 ; B. nordgaardi sp. n. Norway p. 80 
pi xxxvii, Sars Crust. Norw. 8. 
Calanus plumclirus sp. n. N. Pacific 
p. 10 pi. i, Marukawa Bui. Inst. Ocean. 
Monaco 384. 
Caligus aesopus sp. n. Juan Fernandez 
p. 72 pis. iii-iv, Wilson in Skottsberg 
Nat. Hist. Juan Fernandez and Easter 
Isl. 3. 
Canthocamptus alpestris p. 266 figs,. 
Kreis 91 ; C. echinatus p. 644, iccberi 
p. 648, cuspidatus p. 649, text-figs., 
Gurney 69. 
Clausidium p. 425 key to spp. p. 426, 
dissimile sp. n. Long Island p. 427 
pis. xciv-xcv, caudatum p. 430, Wilson 
Proc. U.S. Nat. Mus. 59. 
Clytemnesira scutellala p. 100 pi. 
lxix, Sars 138. 
Cryptopodus brevicauda p. 75 eruca 
p. 76 figs., Sars 138. 
Ctenocalanus vanus p. 475 text- fig., 
Fruchtl 60. 
Cyclopina brachystylis p. 103, dilala 
p. 105 spp. n. Norway, norvegica p. 102, 
littoralis p. 104 figs., Sars Crust. Norw. 
7. 
Cyclops bicuspidatus p. 491 text-fig., 
Fruchtl 60 ; C. buxtoni sp. n. Amara 
p. 840 pi. i, Gurney J. Bombay Nat. 
Hist. Soc. 27. 
Cymbasoma rigidum p. 21, thomsoni 
p. 23, longispi nosum p. 24 figs., Sars 
138. 
Danielssenia robusta sp. n. Norway 
p. 93 pi. lxiv, Sars Crust. Norw. 7. 
Diaixis pygmaea p. 480 text-fig., 
Fruchtl 60. 
Diaptomus vulgaris, chevreuxi p. 841 
pi. ii, Gurney 71. 
Doropygella gen. n. near Doropygus 
tJiorelli p. 49 pi. xxiv, Sars Crust. 
Norw. 8. 
