616 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 86 



Olycella subumbrella, 337, 344-347, 



409. 

 olympiadella, Fascista, 580, 583, 586. 

 omani, Phvllophaga (Phytalus), 157, 



159-162 (fig.), 166. 

 Ondatra zibethica zibethica, 286. 

 Oneirodes, 538. 



bulbostis, 538, 539 (fig.). 



cornutus, 540. 



eschrichtii, 540. 



niger, 540. 

 Oneirodidae, 538, 540. 

 operculella, Galechia, 570. 



Gnorimoschema, 571, 586, 587. 



Phthorimaea, 567. 

 Operculina, 306-308, 326, 330. 



atascaderensis, 330. 



atascaderensis samanica, 330. 



bonairensis, 330. 



catenula, 320. 



cushmani, 318, 319. 



nummulitiformis, 310. 



ocalana, 316. 



oliveri, 318, 319. 



peruviana, 330. 



samanica, 330. 



talara, 330. 



tuberculata, 308, 319. 



tuxpanensis, 311, 312. 



vaughani, 319. 



willcox-ii, 309. 

 Operculinella, 307, 308. 



nummulitiformis, 310. 



willcoxii, 309. 

 Operculinoides, 306-309, 316, 320-322. 



advenus, 321. 



antiguensis, 313, 314. 



atascaderensis, 311. 



catenula, 320. 



cookei, 319. 



ellisorae, 330. 



howei, 330. 



jennyi, 311. 315, 317. 



mariannensis, 320. 



muiri, 312, 318. 



nummulitiformis, 310, 311. 



ocalanus, 315-317. 



ocalanus minor, 317. 



oliveri, 318, 319. 



palmnrealcnsis, 314. 



peruviana, 311. 



prenummulitiformis, 310, 311, 316, 

 325. 



semmcsi, 314. 



sp., 322. 



sp. a, 321. 



sp. b, 321. 



tuberculatus, 319. 



tuxpanensis, 311. 



tuxpanicus, 311, 312. 



vicksburgensis, 313, 318. 



willcoxii, 307, 309. 

 Ophiactis, 415, 417. 



noiabilis, 415, 447. 



savignyi, 416, 447. 

 Ophidiastcr guildingii, 442. 

 Ophiocoma echinata, 450, 451. 



Ophiocoma pumila, 451. 



nisei, 450, 451. 

 Ophiocryptus, 452. 

 Ophioderma appressum, 452. 



brevicaudum, 452. 



cinereum, 452. 



rubicundum, 452. 

 Ophiolepis elegans, 452. 



paucispina, 452. 

 Ophiomyxa flaccida, 446. 

 Ophionereis reticulata, 450. 



squamulosa, 450. 

 Ophiopsila riisei, 452. 

 Ophiostigma isacanthum, 446. 

 Ophiothrix, 417, 418. 



angulata, 447. 



hartfordi, A'il. 



lineata, 418, 449. 



orstedii, 447. 



platyadis, 417, 449. 



suensonii, 418, 447. 

 Ophiozona impressa, 452. 

 Ophiurans from the Smithsonian-Hart- 

 ford Expedition, 1937, 415. 

 Ophiuroidca, 446. 

 Opisthoproctidae, 514. 

 Opisthoproctus, 514, 515. 

 Oporornis formosus, 227. 

 Opossum, 246. 

 Opostomias, 516. 

 Opuntia, 358, 380, 387. 



(Platypuntia) aurantiaca, 375. 



(Platypuntia) discolor, 375. 



exaltata, 354. 



(Cylindropuntia) exaltata, 354, 360. 



ficus-indica, 358, 360. 



(Platypuntia) ficus-indica, 358, 359, 

 384. 



(Cylindropuntia) imbricata, 351,363. 



(Cylindropuntia) leptocaulis, 353, 

 365. 



lindheimeri, 341. 



monacantha, 358. 



(Cylindropuntia) sp., 391. 



(Platypuntia) sp., 349, 375, 386, 

 389 391. 



(Platypuntia) spp., 340, 342, 345, 

 347, 357, 390. 



(Platypuntia) sulphurea, 358, 359, 

 380. 



vulgaris, 358. 

 Oreaster reticulatus, 442. 

 Oriole, Baltimore, 229. 



orchard, 229. 

 ornatifimbriella, Filatima, 575, 586, 587, 



591, 592. 

 orstedii, Ophiothrix, 447. 

 oryzivorus, Dolichonyx, 228. 

 Oryzomys palustris palustris, 282. 

 osborni, Mustelus, 461, 467. 

 Oseis bianulella, 567, 569. 

 Osprey, 183. 



Otocoris alpestris praticola, 201. 

 Otter, Mississippi Valley, 262. 

 Otus asio asio, 187. 

 Oven-bird, 226. 

 Owl, Florida barred, 187. 



