900 



INDEX. 



Sigsbeia 206 2 . 



Silk-glands 627. 



Silk-worm 714 2 . 



Silpha 728 1 , antenna 

 618. 



Silvanus 729 2 . 



Simocephalus 381 2 , ner- 

 vous system 372, par- 

 thenogenesis 374. 



Simognathus 851 2 . 



Simorhynchus 502 2 . 



Simroth, canals of, in 

 Ophiurids 203. 



Simulium 746 1 . 



Sinus system Echino- 

 derms 128. 



Siphon Echinoids 230. 



Siphonal tube Balano- 

 glossida 79. 



Siphonaptera 662. 



Siphonoecetes 500 2 . 



Siphonophora 594 1 . 



Siphonorhinus 594 l . 



Sirex 758. 



Siriella 472, 490 1 , legs ' 

 467, males 469. 



Siro 840, 841. 



Sismondia 243 2 . 



Sisyra 704 2 . 



Sitalces 842 l . 



Sitaris 733 1 . 



Sitticus 826 2 . 



Sitzb, K. preus. Akad. = 

 Sitzungsberichte der 

 Koniglich - preussis- ; 

 chen Akademie der i 

 Wissenschaften zu i 

 Berlin. 



Skeleton Asteroidea 169, 

 Balanoglossida 85, 91, 

 Echinoids 209, Holo- 

 thurians 250, Ophiu- 

 rids 195, Tunicata 4 2 . 



Skin Balanoglossida 69, 

 Crinoids 283, Ophiu- 

 rids 194. 



Skip-jack 732 2 . 



Skippers 713. 



Slimonia 798. 



Sluiteria 38 2 . 



Smeringopus 822 2 . 



Smerinthus 715 1 . 



Smilasterias 192 2 . 



Smynthurus 657, tra- 

 cheae 656. 



Snake-flies 702 \ 



Snipe-flies 746 2 . 



Socialinae 764. 



Solaster 176, 192 1 , no 



pedicellariae 173, 

 parasite of 435. 



Soldier-fly 746 2 . 



Solenobia 720 2 . 



Solenocera 529 1 . 



Solenysa 823 2 . 



Soles, parasite on 408 -. 



Solifugae 829. 



Solpuga 832. 



Solpugae 829. 



Somites of Arachnida 

 317, 323, Myriapoda 

 320, Insecta 322, Crus- 

 tacea 323. 



Soothsayers 668 x . 



Spanish-fly 733 1 . 



Sparassus 824 2 . 



Spatagocystis 247. 



Spatangoida 244. 



Spatangus 246 2 , apical 

 system 218, caecum 

 230. 



Special anal 276. 



Specilligus 408 1 . . 



Spengelia 81, 103 1 , ner- 

 vous system of 72, 

 nerve-root 73, noto- 

 chord 75, gill-slits 78, 

 liver 79, proboscis 81, 

 peripharyngeal cavi- 

 ties 87, habits 100. 



Spercheus 727 2 . 



Sperchon 851 ^ 



Spermatophores of Crus- 

 tacea 355. 



Spermatozoa of Cirri- 

 pedia 421, Copepods 

 399, Crustacea 354, 

 Decapoda 525, 526, 

 Insecta 639, Ostracods 

 388, Peripatus 564, 

 Schizopods469,immo- 

 tile of Palpigradi 829. 



Sphaerechinus 224, 242 2 , 

 larva 140, pedicella- 

 riae 223. 



Sphaeridia Echinoids 

 126, 227. 



Sphaeriodesmus 593 2 . 



Sphaerius 728 2 . 



Sphaerogastra 852 2 . 



Sphaeroma 489 1 , brood 

 sacs 484, nervous sys- 

 tem 442, vitrellae of 

 329, rhabdom of 331. 



Sphaeronella 410 2 . 



Sphaeroniscus 487. 



Sphaerotherium 592. 



Sphaerothuria 269 l . 



S | ill erodes 763. 



Sphex 768, 7(5!) '. 



Sphindus 731 -. 



Sphingidae 714 2 . 



Sphinx 627, 715'. 



Sphyrapus 479. 



Spider marine 825 ! , 

 water 825 1 , median 

 and lateral eyes 335, 

 anterior median eye 

 of 336, trapdoor 819. 



Spinax parasite of 423 2 . 



Spines Echinoderms 

 121, Echinoids 225, 

 Ophiurids 196. 



Spinnerets 710, 814. 



Spinners 686. 



Spinocalanus 405 } . 



Spintharus 823 l . 



Spiracles of Blastoids 

 312. 



Spirobolus 593 2 . 



Spirontocaris 533 l . 



Spiropagurus 540 '. 



Spirostrephon 593 V 



Spirostreptus 593 2 . 

 length 583. 



Splanchnocoel 126, 143. 



Splanchnotrophus 409 -. 



Sponges, parasites of 

 425 2 . 



Spongicola 531 l . 



Spongy organ Crinoids 

 288. 



Sporasterias 192 2 . 



Sporotaxis 242 ] . 



Squalus, parasite of 423 2 



Squama 740. 



Squash-bug 692 l . 



Squids parasite of 407 l . 



Squilla 505, 511, intes- 

 tine 507 1 , larva 510, 

 blood 352, fossil 359 1 



Stag-beetle 725 l . 



Stalagmus 408 2 . 



Stalita 821 2 . 



Staphylinidae 728 '. 



Starfishes 166. 



Stasimopus 819. 



Statocyst 350, Arthro- 

 poda 337. 



Steatoda 823 l . 



Stegnaster 191 : . 



Stegocephalus 501 1 . 



Stegodyphus 820 2 . 



Stegomyia 744 2 , 745 2 . 



Stegosoma 63, 65. 



Stelidiocrinus 297. 



Stelis 763. 



