I X D E X. 



cies of American Ant-thrushes,376; 

 on Pftriis meridior.alis, 381 ; on 

 three new species of Todirostrnm, 

 382 ; on new species of Pachy- 

 rhamphus, 3i)8 ; on the Upland 

 Goose, 4(51 ; on new species of 

 Formicariadse, 462. 



Sclerunis, new species of, 4/2. 



Scotophilus, new species of, 227, 389. 



ScydniEcnus, new species of, 180. 



Seeds, on the vitality of, traiisported 

 bj- marine cun-ents, 31/. 



Sepia officinalis, note on the occur- 

 rence of, 528. 



Sheep, description of Chinese, 38C. 



Siebold's, Von, Parthenogenesis in 

 Moths and Bees, revicved, 4S. 



Siplionactinia, description of -the new 

 genus, 240. 



Slater, J. W., on the grape disease, 

 529. 



Smith, A., on the supjjosed influence 

 of the moon on vegetation, 151. 



Species, thoughts on, 485. 



Sj)hajrobolus stellatus, observations 

 on, 529. 



Spiders, descriptions of new, 282; 

 remarks on some British, 497. 



Spongiada?, on the anatomy and phy- 

 siology of the, 9i)S. 



Spongilla, on the structure of, 21. 



Star-tishes, on the develoi)nient of 

 the, 132; descriptions of new pa- 

 licozoic, 321 ; on new Norwegian, 

 319, 320. 



Steenstrup, Prof. J., on Hectocotylus- 

 formation in the Cephalopoda, 81. 



Stephens, II. O., on two new Crypto- 

 gams, 514. 



Stomates, on the causes of the open- 

 ing and closing of, 1 54 . 



Strix lapponica, on the nest and eggs 

 of, 309. 



Strombus, new species of, 522. 



Subergorgia, characters of the new 

 genus, 519. 



Tanager, on a new, 319. 



Thaiunophilus, nevv species of, 466. 



Thevetia nereifolia, on two cases of 

 ])oisoning with the seeds of, 150. 



Todirostrum, new species of, 382. 



Tomes, R. F., on the genus Lasiunis, 

 215; on new species of Bats, 227, 

 388. 



Trachelius ovum, on, 201. 



Trtcul, A., on circulation in plants, 

 467, 526. 



Trematode worms, on the larva; of 

 the, 129. 



Tridaena, on the anatomy of, 302. 



Trochilus, on the habits of the spe- 

 cies of, 520. 



Trochus, new species of, 523. 



Tropifer, new species of, 235. 



Troschel, Prof., on the saliva of Do- 

 lium galea, 75. 



Turbo Sarmaticus, on the animal of, 

 41. 



Urocerus gi?as, on the occurrence of, 

 in Cornwall, 240. 



Vegetation, on the supposed influence 

 of the moon on, in Peru, 151. 



Vespertilio, new species of, 229. 



Virgularia, new species of, 238. 



Wallace, A. R., on the Great Bird of 

 Paradise, 411; on the natural his- 

 tory of the Am Islands,. 473. 



Waxwing, on the nest and eggs of 

 the, 308. 



Whales, on the British species of, 

 424. 



White, A., on some new Coleopterous 

 insects, 211. 



WoUaston, T. V., on certain Coleo- 

 pterous insects from the Cape de 

 Verde Islands, 503. 



WoUey, J., jun., on the nest and 

 eggs of the V\'axwing, 308. 



Yeast-plant, on the development of 

 the, 304. 



Zoological Societv, proceedings of the, 

 57, 211, 308, 376, 460, 519. 



END OF THE TWENTIETH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LIOX COURT, FLEET STREET. 



