ILLUSTRATIONS IX 



Figure Pag« 



61. Centropages hamatus: a, Male, dorsal; h, female, dorsal; c, female, 



abdomen, ventral; d, male, first antenna; e, male, right fifth leg; /, 

 female, fifth leg 89 



62. Diaptomus minutus: a, Female, dorsal; b, female, fifth legs; c, male, 



fifth legs 92 



63. Diaptomus sanguineus: a, Female, fifth legs; h, male, tip of right first 



antenna; c, male, fifth legs 94 



64. Diaptomus leptopus: a, Male, dorsal; b, female, fifth legs; c, male, 



fifth legs 95 



65. Diaptomus spatulocrenatus: a, Female, dorsal; b, spermatophore; c, 



female, fifth leg; d, male, dorsal, showing twist to the right; e, male, 



fifth legs 97 



66. Diaptomus birgei: a, Female, fifth legs; 6, male, fifth legs 99 



67. Diaptomus oregonensis: a, Female, dorsal, showing number and ar- 



rangement of eggs in single egg-case; b, female, fifth leg; c, male, 

 fifth legs; d, young male, fifth legs; e, young female, fifth legs; /, 

 female, vfentral view of urosome 100 



68. Pseudodiaptomus coronatus: a, Female, lateral, showing inequality of 



the two egg-cases; b, female, fifth legs; c, male, fifth legs; d, young 

 male, fifth legs 102 



69. Temora stylifera: a, Female, dorsal; b, female, fifth legs; c, male, fifth 



legs 104 



70. Temora longicornis: a, Female, dorsal; 6, male, dorsal; c, male, right 



first antenna; d, male, fifth legs; e, female, fifth legs 105 



71. Temora turbinata: a, Female, dorsal; b, female, fifth legs; c, male, fifth 



legs 107 



72. Eurytemora americana: a, Female, dorsal; b, female, fifth legs; c, male, 



fifth legs 109 



73. Eurytemora hirundoides: a, Female, dorsal; b, female, fifth legs; c, 



male, fifth legs HO 



74. Eurytemora a finis: a, Female, fifth legs; 6, male, fifth legs 112 



75. Eurytemora herdmani: a, Female, fifth legs; b, male, fifth legs 113 



76. Eurytemora lacustris: a, Male, fifth legs; b, female, fifth legs; c, female, 



abdomen and caudal rami 114 



77. Epischura nevadensis: a, Female, dorsal, showing peculiar spermat- 



ophore coiled around genital segment; b, young female, fifth legs; 

 c, adult male, fifth legs; d, male, dorsal; e, young male, fifth legs; 

 /, adult female, fifth legs 116 



78. Metridia brevicauda: a, Female, fifth legs; b, male, fifth legs 118 



79. Metridia lucens: a, Male, dorsal; b, female, dorsal; c, female, right 



first antenna; d, female, second leg; e, female, fifth legs; /, male, 



fifth legs 119 



80. Metridia longa: a, Female, dorsal; b, female, fifth legs; c, male, fifth 



legs 121 



81. Metridia princeps: a, Male, dorsal; b, female, fifth legs; c, male, fifth 



legs 122 



82. Pleuromamma xiphias: a, Female, fifth legs; b, head, lateral view 124 



83. Pleuromamma abdominalis: a, Male, fifth legs; b, female, fifth legs_-_ 125 



84. Pleuromamma robusta: a, Female, dorsal; b, female, fifth legs; c, male, 



fifth legs 126 



85. Pleuromamma gracilis: a, Female, fifth legs; b, male, fifth legs 127 



86. Lucicutia grandis: a, Female, dorsal; b, female, fifth leg; c, male, fifth 



legs 129 



