INDEX. 
559 
Salmo albus, 90. 
csecifer, Parnell, 71. 
Cumberland, Lacep., 74. 
fat'io, 71, 75, 70, 79, 86, 90. 
ferox, ftnote 84, 86. 
iridens, ftnoD, 87. 
lemanus, 75, 90. 
levenensis, Walk., 71, 72, 76. 
salar, ftnote, 71. 
taurinus, Walk., 71, 72. 
Salmon-trout, ftnote, 71. 
Samea castellalis, Guer., 531, 545. 
Sand-wasps, 474. 
Sapphirina insequalis, Dana, 153. 
metallina, 153. 
serrata, Brady , 153. 
Sarcophaga calida, Wiedem., 532, 518. 
carnaria, 420. 
Sarcoptidse, 401, 405. 
Saxicava rugosa, Linn., 452, 467. 
Sayornis, 313. 
Scalaria hellenica, Forbes, 503. 
Scalpellum vulgare, Leach, 456. 
Scaphander lignarius, Linn., 448. 
Scapteriscus abbreviatus, Sciidd., 530, 
533. 
Scliizaspidia, Westw., 31, 33. 
furcifera ,' Westw., 31. 
maculata, Westw., 29. 
Murrayi, Kirb., 37. 
plagiata, Walk., 31. 
Schizophrys aspera, A. M.-Eclw., 109, 
113. 
, var. spinifrons, A. M.-Edw., 
113. 
Schizoporella unicornis, Johnst., 452, 
504. 
Scolecithrix Danse, Lubbock, 148. 
minor, Bracly, 148. 
Scolopendra morsitans, Linn., 526. 
Scoparia dulcis, 474. 
Scrobicularia prismatica, 46. 
Scrupocellaria, 504. 
frondis, Kirkp., 504, woodcut, 
505. 
rep tans, Linn. , 452. 
Scutellidum tisboides, Claus, 153. 
Scyllaridai, 1 12. 
Scyinus, sp., 556. 
xeranipelinus, Muls., 556. 
Scytlirops, 338. 
Sea-pen, 44. 
Segregate breeding (Gulick), 192-195. 
Segregation, Causes of Cumulative 
(Gulick), 222-274. 
, Cumulative divergence through 
Cumulative (Gulick), 212-222. 
, Spencer’s Law of (Gulick), 195. 
Seira Buskii, Lubb., 559. 
musarum, Ridley, 559. 
Selandria meridionalis, W. F. Kirb., 34, 
37. 
Selandriinse, 34. 
Selection, effects of, and independent 
generation contrasted (Gulick), 202- 
212 . 
Semele cbinensis, Sowerb., 498. 
cordiformis, Chemnitz, 498. 
lenticularis, Sowerb., 498. 
luteola, Reeve, 498. 
luteola, A. Adams, 498. 
modesta, Reeve, 498. 
modesta, A. Adams, 498. 
nitida, Mull., 452, 468. 
reticulata, Sowerb., 498. 
sinensis, A. Adams, 498. 
subtruncata, Reeve, 498. 
tenuis, Mont., 452, 468. 
(Abra) alba, Wood, 452, 468. 
Separation and Variation of species 
(Gulick), 191. 
Sepiola Rondeleti, Leach, 448. 
Serpula vermicolaris, Linn., 458, 469. 
Serricornia, 550. 
Sertularella fusiformis, Hincks, 460. 
Gayi, Lamx., 460. 
rugosa, Linn., 460. 
Sertularia abietina, Linn., 44, 460. 
argentea, Ell. Sp Sol., 460. 
Sesarma Bocourti, A. M.-Edw., 1 10, 
117. 
Sessile-eyed Crustacea, 46, 74, 83. 
Setella gracilis, Dana, 151. 
Sharpe, B.. Bowdler, Aves of Fernando 
Noronha, 477. 
Shells, descriptions of fourteen new 
species of, by G. B. Sowerby, 395. 
Shufeldt, Dr. R. W., Studies- of the 
Macrochires, Morphological and 
otherwise, with the view of indi- 
cating their Relationships and de- 
fining their several Positions in the 
System, 299. 
Siderastrgea siderea, Ellis <$• Soland., 
570. 
stellata, Verrill, 570. 
Silpha, 126. 
thoracica, 126. 
Silver-grey trout, 72. 
Sim, Geo., Occurrence of Lumpenus 
lampetriformis on the North Coast 
of Scotland ; with Notes on its 
Habits, Food, and the Ground it 
frequents, 38. 
Siphonaria brunnea, Hanley, 497. 
hispida, Gould, 497. 
lineolata, d’ Orbigny, 497. 
picta, var., Smith, 497, 503. 
Siphonodentalium tetraschistum, Wat- 
son, 503. 
