Index. 



549 



Hymenatherum Wrightii, 229. 

 Hymenopappus corymbosus, 230. 

 Hymenophyllites capillaris, Lesq'x, 421. 



furcatus, " 421. 



Hildreti, " 421. 



Idotasa consolidata, Stimpson, 503. 



media, 504. 



resecata, Stimpson, 504, 



Wosnessenskii, 504. 



Ionidium lineare, 151. 

 Iphimedia Pugettensis, 521. 

 Isopappus divaricatus, 223. 

 Iva angustifolia, 226. 



Kallstroemia maxima, 158. 



Katadysas, Hentz, subgenus, 287. 



pumilus, Hentz, 287. 



Keerlia bellidifolia, 220. 



effusa, Gray, 222. 



ramosa, 221. 



Kneeland, S., dissection of Crocodilus lu- 

 cius, 110; on the skeleton of Troglo- 

 dytes gorilla, 336. 



Krameria lanceolata, 151. 



Kuhnia eupatorioides, d. gracillima, 218. 



Lagenaria vulgaris, 194. 

 Larus argentatus, 302. 



" " nest of, 303. 



Le Conte, John L., on the Pselaphidas of 



the United States, 65. 

 Lepachys columnaris /5. pulcherrima, 



227. 

 Lepidodendron carinatum, Lesq'x, 429, 



clypeatum, " 429. 



conicum, " 428. 



distans, " 429. 



giganteum, " 428. 



modulatum, " 428. 



obtusum, " 429, 



oculatum, " 428. 



■ sigillarioides, " 429. 



vestitum, " 428. 



Lepidophyllum acuminatum, " 430. 



affine, " 430. 



brevifolium, " 430. 



hastatum, " 430. 



obtusum, " 430. 



plicatum, " 430. 



Leptocottus armatus, 535. 



Leria nutans, 232. 



Lesquereux, Leo, on new species of fossil 



plants from Pennsylvania coal-fields, 



409. 

 Leucosilia Jurinii, 471. 

 Liatris punctata, 218. 

 Libinia affinis, 455. 

 Lima tetrica, Gould, 405. 

 Linckia leviuscula, Stimpson, 529. 

 Lindheimera, Gray and Engelm,, 225. 



Texana, 226. 



Linum rupestre, 232. 



Berlandieri, 156. 



Boottii, 155. 



Linum Hudsonioides, 156. 



multicaule, 155. 



Linyphia V autumnalis, Hentz, 30. 



" 30. 



" 28, 



" 30. 



" 31. 



" 29. 



" 31. 



" 29. 



coccmea, 



communis, 



conferta, 



V costata, 



marmorata, 



V neophita, 



scripta, 



Liosoma arenicola, Stimpson, 525. 



Sitchense, 525. 



Lipochseta Texana, 229. 



List of known Species of Pisidium, and 



their Synonymy, 367. 

 Lithodes brevipes, 479, 



Camtschaticus, 479. 



spinosissimus, 478. 



Lithodomus falcatus, Gould, 403. 

 Livoneca vulgaris, Stimpson, 508. 

 Lonicera albiflora, 213. 

 Loxorhyncus, nov. gen., Stimpson, 451. 



crispa-tus, " 453, 



grandis, " 452. 



Lucina orbella, Gould, 395. 

 Ludwigia natans, 190. 



palustris, 190. 



Lumpus Anglorum, 269. 

 Lupinus Texensis, 177, 

 Lutraria undulata, Gould, 391. 



ventricosa, " 390. 



Lygia dilatata, Stimpson, 507. 



occidentalis, 506. 



Lygodesmia aphylla (3. Texana, 232. 

 Lythrum alatum var. breviflorum, 187. 



" lanceolatum, 188. 



" y ; , 188. 



" iinearifolium, 188. 



" ovalifolium, 187. 



" pumilum, 187. 



Mactra mendica, Gould, 393. 



nasuta, " 393. 



Magnesia, Fibrous Hydrate of, 36. 

 Malacosteus, Ayres, a new genus of 



fishes, 53. 

 Malacosteus niger, Ayres, 54. 

 Mallotus villosus, 265. 

 Malvastrum carpini folium, 161. 



pedatifidum, Gray, 160. 



Wrightii, 160. 



Mammillaria applanata, Gray, 198. 



— calcarata, 195. 



compacta, 196. 



gummifera, 199. 



hemisphasrica, Gray, 198. 



Nuttallii, 199. 



radiosa, Gray, 196. 



similis, a. caespitosa, j3. ro- 



bustior, 200. 

 Marine Worms, Embryology of, 1. 

 Marshallia caespitosa, 231. 

 Mediaster sequalis, Stimpson, 530. 

 Megalorchestia Californiana, 516. 

 scabripes, Stimpson, 516. 



