589 



Salino albus, 90. 



caseifer, Parncll, 71. 



Cumberland, Lace))., 74. 



fai-io, 71, 75, 7(i, 71), 8(), 90. 



ferox, ftnote 84, 86. 



iridens, ftnot \ 87. 



lemanus, 75, 90. 



levenensis, WaUc, 71, 72, 70. 



salar, ftnote, 71. 



taurimis, Walk., 71, 72. 

 Salmon-trout, ftnote, 71. 

 Samea castellalis, Giier., 531, 545. 

 Sand- wasps, 474. 

 Sapphirina inEequalis, Dana, 153. 



metallina, 153. 



serrata, Brady, 153. 

 Sarcopbaga calida, Wiedem., 532, 548. 



carnaria, 420. 

 Sarcoptid£e,.401, 405. 

 Saxicava rugosa, Linn., 452, 467. 

 Sayornis, 313. 



Scalaria bellenica, Forbes, 503. 

 Scalpellum vulgare. Leach, 456. 

 Scaphander lignarius, Linn., 448. 

 Scapteriscus abbreviatus, Soudd., 530, 

 533. 



Schizaspidia, Westw., 31, 33. 



furcifera, Westw., 31. 



maculata, W^estw., 29. 



Murrayi, i!r2>6., 37. 



plagiata, Walk., 31. 

 Scbizopbrys aspera, A. M.-Edw., 109, 

 113. 



■ , var. spinifrons, A. M.-Edw., 



113. 



Scbizoporella unicornis, Johnst., 452, 

 504. 



Scolecithrix Daua3, Lid)hock, 148. 



minor, IWady, 148. 

 Scolopendra morditans. Linn., 526. 

 Scoparia dulcis, 474. 

 Scrobicularia prismatica, 46, 

 Scrupocellaria, 504. 



frondis, Kirkp., 504, woodcut, 

 505. 



reptans, IJnn., 452. 

 Scutellidum tisboides. Clans, 153. 

 Scyllaridii", 112.^ 

 Scymus, fp., 556. 



xeranipelinus, Muls., 556. 

 Scythrops, 338. 

 Sea-pen, 44. 



Segregate breeding (Gulick), 192-195. 

 Segregation, Causes of Cumulative 

 (Gulick), 222-274. 



, Cumulative divergence tb rough 



Cuuuilative (Gulick), 212-222. 



, Spencer's Law of (Gulick), 195. 



Seira Buskii, Luhh., 559. 

 musarum, Ridley, 559. 



Selandria meridionah's, W. F. Kirb., 34, 

 37. 



Solandriin.T, 34. 



Selection, effects of, and independent 

 generation contrasted (Gulick), 202- 

 212. 



Semele chinensis, Sowerb., 498, 



cordiformis, Chemnitz, 498. 



lenticularis, Sotverb., 498. 



luteola, Eeeve, 498. 



luteola, A. Adams, 498. 



modesta, Reeve, 498. 



modesta, A. Adauis, 498. 



nitida, Mrdl, 452, 468. 



reticulata, Sowerb., 498. 



shieoisis, 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. 

 Seri icornia, 550. 



Sertularella fusiforrais, Hincks, 4()0. 



Gayi, La7)i.T., 460. 



rugosa, Liun., 4(50. 

 Sertularia abietina. Linn., 44, 460. 



argentea, Ell. cj" Sol., 460. 

 Sesarma Bocourti, A. M.-Edw., 110, 

 117. 



Sessile-eyed Crustacea, 46, 74, 83. 



Setella gracilis, Dana, 151. 



Sharpe, R. 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 ti)eir Relationships and de- 

 fining their several Positions in the 

 System, 299. 



Siderastraea siderea, Ellis ^' Soland., 

 570. 



stellata, Verrill, 570. 

 Silpha, 126. 



thoi-acica, 126. 

 Silver-grey trout, 72. 

 Sim, Geo., Occurrence of Lumpcnns 

 lampetriformis on the North Coast 

 of Scotland ; with Notes on its 

 Habits, Food, and the Ground it 

 frequents, 38. 

 Siphoriaria brunnea, Hanley, 497. 

 hispida, Gould, 497. 

 lineolata, d'Orbigny. 497. 

 picta, var.. Smith, 497, 503. 

 Siphonodentalium tetraschistum, Wat- 

 son, 503. 



