606 



INDEX. 



New Haven, Mean Temperature and Fluct- 

 uations of Temperature at, 194. 



Newport, R. I., Auroras observed at, 155. 



Newton, H. A., and Elias Loomis, on the 

 Mean Temperature, and on the Fluctua- 

 tions of Temperature at New Haven, 

 Conn., 194. 



New Zealand, new starfishes from, 247. 



Nicaratjua, Polyps collected on the coast 

 of, by J. A. McNiel, 565. 



Nidorellia, 280, 348. 



armata, 280. 284, 312, 328, 329, 330, 

 332, 333, 343, 372. 574, 594. 



Notes on the Echinoderms of Panama and 

 the west coast of America, 251. 



on the Radiata in the Museum of Yale 

 College, 247. 



Notice of a collection of Echinoderms from 

 La Laz, L. C, 371. 



of the Corals and Echinoderms col- 

 lected by Prof C F. Hartt, at the 

 Abrolhos Reefs, Brazil, 351. 



Introductory, to Herrick's Auroral 

 Register, 7. 



Notices of Auroras extracted from the 

 Meteorological Journal of Rev. Ezra 

 Stiles, 155. 



of Auroras extracted from various 

 Joui'nals kept at New Haven, Conn., 164. 

 of Auroras extracted from a Meteor- 

 ological Journal kept at Sharon, Conn., 

 167. 



O'lservations, additional, on Echinoiierms. 



568. 

 Oculina, 365, 507. 512, 513, 518. 

 Oculin;icea 512, 536. 

 Ocu inidEe, 514, 512, 519. 

 Ophiacantha Peutacrinas, 341. 

 Ophiactis. 264 348. 



arenosa, 266, 330, 341. 



asperula, 335. 



Kroveri, 264, 334, 366, .341. 



Miilleri, 341. 



Orstedii. 266. 264, 330, 341. 



simplex, 266, 264, 330, 341. 



virescens, 265. 327, 330, 372, 341, 594. 

 Ophiarachna, 348. 349. 



macul ita. 574. 

 Ophiarthrum, 349. 

 Ophidiaster, 287, 285, 348, 577. 



flaccidus, S44. 



ophidiMuus, 285. 



ornithopus. 367. 



porosissimu^, 287. 



pyramidatus, 287, 328, 330, 332, 333. 

 344, 577, 594. 



suturalis, 285. 



unifascialis, 285. 

 OphidiasteridjB, 344. 

 Ophioblenna, 348. 



Antillensis, 342. 

 Ophioceramis Januarii, 343. 



Ophiocnida, 260. 



hispida, 260, 330, 342. 



scabriuscula, 342. 

 Ophiocoma. 258, 348. 



aithiops, 258, 327, 329, 330, 341, 594. 



Alexandri, 259, 327, 329, 330, 341, 594. 



echinata, 258, 341. 



piunila. 341. 



Riisei, 257, 341. 

 Ophiocomidje, 341. 

 Ophioderma Antiilarum, 364. 



cinereum, 367. 



Panamensis, 253. 



variegata, 254. 

 Ophiogljqjha Liitkenii, 325. 



Sarsii, 593. 



species, 593, 594. 

 Ophiolepidse, 342. 

 Ophiolepis, 256, 348. 



annulata, 259. 



Atacamensis, 335. 



elegans, 367, 342. 



geminata, 261. 



hispida, 260. 



Pacifica, 257. 



paucispina, 342. 



simplex, 266. 



triloba, 259, 



variegata, 25G, 330, 342, 593, 594. 

 Ophiomastrix, 349. 

 Ophiomyxa, 330, 341, 348. 



flaccida, 36ii, 341. 

 Opluomyxidpe, 341. 

 Ophiouema intricata, 341. 

 Ophionephthy-! limicola, 341. 

 Ophionereis, 259, 348. 



annulata, 259, 328, 330, 342, 594. 



reticulata, 366, 342. 



porrecta, 342. 



triloba. 259. 



Xantusii, 270, 328, 342, 594. 

 Ophiopeza, 348, 349. 

 Ophiopholi-; Caryi, 326. 



-Kennerleyi, 325. 

 0|ihiophragmus, 270, 348. 



marginatus, 270, 330, 342. 



septus, 342. 



Wurdemanni, 342. 

 Ophioplocus, 349. 

 O|ihiopsila Riisei, 341. 

 Ophiostigma, 270, 348. 



i-acanthum, 342. 



tenue, 270, 330. 

 Ophiothela, 269, 348. 



Dana3, 572. 



mirabilis, 268, 330, 342, 376, 572, 594. 

 Ophiothrix, 278, 348. 



Caribaea, 342. 



dumosa, 270, 326, 328, 329, 342, 594. 



lineata, 342. 



magnifica, 334. 



mirabilis, 268. 



orstedii, 342. 



