179 



Orthetrum pruinosum, 191 5, 26. 



clelia, 1920, 321. 



glaucum, 1915,25. 



pruinosum, 19 15, 26. 



■ sabina, 1920, 321. 



testaceum, 1915, 26 ; 1920, 322. 

 Orthoderides sp., 191 4, 648. 

 Orthogonys olivaceus, 1911, 1114. 

 Ortholitha monotecta, 191 6, 729. 

 Orthopsis, 19 12, 471. 

 Ortygospiza atricollis, 1913, 1093; 



i9i5,706. 

 Ortyxvirginianus, 191 1, 521; 1913,1052. 

 Orycteropus, 191 1, 921 ; 191 3, 886, 

 888, 889, 892, 893. 

 sethiopicus, 1911, 463. 

 capensis, 191 1, 463; 1914,1058; 

 1916, 199, 742. 

 Oryctolagus cuniculus, 191 1, 145; 



1914,905. 

 Oryx algazel, 191 1, 1. 

 beatrix, 191 1, 456. 

 beisa, *<)ii, 456. 

 gazella, 1911, 152; 1914, 1057. 

 leucoryx, 1911, 456; 19 15, 535; 

 1920, 438. 

 Oryzoborus aethiops, 19 11, 1098. 

 crassirostris, 1911,478. 

 funereus, 1911, 1098. 



sethiops, 191 1, 1098. 



funereus, 191 1, 1098. 



torridus, 1 9 1 1 , 478. 

 Osacia lineolella, 191 8, 123. 

 Oscarella, 191 3, 738. 

 Osmotreron bicincta, 1911,516; 1913, 

 1056. 

 griseicauda, 1914, 1059. 

 vernans, 191 1, 516. 

 Osteodes procidata, 19 16, 157. 



eritreensis, 1916, 157. 



turbulentata, 19 16, 157. 

 Osteolepis, 191 3, 84, 957. 

 Osthimosia, 191 3, 510. 



zanzibariensis, sp. n., 19 13, 

 462, 508, 537. 

 Ostinops narocastaneus, 191 1, 1211. 

 decumanus, 1911,480 ; 1913,1065. 

 salmoni, 191 1, 1211. 



Ostinops viridis, 191 1 860. 



Ostracoda, 1920, 564. 



Ostracolethe, 1911,804. 



Ostrseca cucullata, 19 14, 666. 



Ostrea sp., 191 1, 1059, 1060; 19 12, 



301 ; 1914, 1061. 

 Otaria californiana, 191 r, 443, 985; 

 1914, 901 ; 1915, 706 ; 1919, 

 224. 

 hookeri, 1911, 443. 

 jubata, 191 1, 443. 

 pusilla, 191 1, 443 ; 1912,2. 



X O. californiana, 1914, 219. 



Otiditasnia, gen. n., 191 2, 196, 220, 

 584, 590, 591 ; 191 3, 564. 

 eupodotidis, 1912, 194-221, 583 ; 



1914, 879. 

 Otis, 191 1, 85. 



ludwigi, 191 1, 863. 



tarda, 191 1, 73, 526; 1913, 1054; 



1915, 293; 1916, 739. 

 vigorsii, 191 1, 863. 



Otocinclus maculipinnis, sp. n., 

 1 9 12, 666, 668,670. 



nigricauda, 191.., 668. 



perforatus, 1912, 668. 

 Otocompsa fiaviventris, 19 11, 85S. 

 Otocorys alpestris, 191 1, 484. 



bilopha, 191 1, 484. 

 Otocryptis bivittata, 191 1, 706. 

 Otocyon megalotis, 1911, 440; 1912, 



232; 1914, 927. 

 Otolithus ruber, 1920, 72. 

 Ouacaria, 1911,433. 

 Oudemansia cserulea, 1912, 119. 

 Oudenodon, 19 n, 1080; 19 12, 859, 

 872. 



bolorhinus, sp. n., 19 n, 1076, 

 1081,1082; 1912,868. 



kolbei, 1912, 422, 425. 



magnus, 1912, 866. 



strigiceps, 191 1, 1076. 

 Ourebia montana, 191 1, 1. 



nigricaudata, 191 1, 2, 455, 869. 



ourebia cottoni, 1914, 317. 

 Ovibos moschatus, 19 19, 499. 

 Oviclypeus, 19 12, 453. 

 Ovios nealces, sp. n., 191 5, 95. 



12* 



