232 



Hydra — Hydromedusen 



Hydra 2, 95, 96, 9S, 104, 105, 520; 

 10, 497; S5, 135; S6, 511, 512, 

 5161 517; S7, 151, 153. 



— fiisca 2, 95; 8, 242; 19, 44, 93, 

 480! 536, 537; S6, 517. 



— grisea 19, 44, 93. 



— hexactinella 2, 96, 98; t 6 f 13, 

 14; S6, 513. 



— oligactis 2, 95, 98; S6, 513. 



— rhaetica S6, 517. 



— rubra S6, 517. 



— squaniata S2, 7. 



— viridis 2, 96, 98; 8. 147; 19, 41, 

 93; S6, 505, 512, 513, 516! S7, 

 139! 140, 144, 149, 151; t 11. 



Hydrablabes 13, 503. 

 Hydraclina 4, 382, 389. 



— globulosa 4, 309. 

 Hydrachnidae 4, 280, 281, 282, 289, 



290, 297, 307, 308, 309, 310, 311, 

 313, 362, 363; 19, 88, 534. 

 Hydractinia 5, 913; 8, 394; 10, 479! 

 498! 499, .500; S6, 511, 512, 517! 

 520, 521, 522. 



— all m an i S6, 518. 



— angiLsta S6, 512. 



— antarctica S6, 513, 517, 519. 



— borealis S6, 518. 



— carica S6, 518. 



— echinata 8, 394; S6, 96; S6, 518, 

 519. 



— fucicola S6, 518. 



— grisea S2, 96. 



— levispina S6, 519. 



— milleri S6, 518, .521. 



— minuta S6, 518. 



— monocarpa 8, 394! S6, 518. 



— ornata S6, 518. 



— pacifica S6, 508, 512, 516, 519— 

 522 ! 



— parvispina S6, 506, 507, 512, 516, 

 518! 



— polyclina S6, 518, 519. 



— sp. indeterni. S6, 518. 

 Hydractinidae 8, 394; S6, 502. 

 Hydractiniidae S2, 96. 

 Hydraena riparia 8, 146, 148, 149. 

 Hydrallmania 10, 521, 522, 524! 527! 



544; 14, 353; S6, 504, 616. 



— bicalycula S6, 61*. 



— distans 14, 355. 



— falcata 8, 402; 10, 524; 14, 355; 

 S2, 96; S6, 616. 



— franciscana 14, 355. 

 Hydraiithea 10, 499. 

 Hydiaspis gibba S6, 84. 

 Hydrellia chrysostonia 5, 917. 



— flavipos 5, 917. 



— griseola 5, 917. 

 Hydridae (Au.straliens) 2, 95. 



Hydrobia 4, 979. 



— baltica 4, 970; 9, 400; S2, 50. 



— grim mi 4, 968. 



— stagnalis v. cornea 4. 968 — 969! 

 978. 



V. pusilla 4, 968, 969. 



— ulvae 8, 2.50, 255; S2, 22, 50. 



— ventrosa 4. 969. 



V. pusiila 4, 969—970! 978. 



Hydrobiidae 4, 968. 

 Hydrobius fuscipes 8, 149. 



— limbatus 8, 146, 148, 149. 

 Hydrocampa 6, 6l9, 620, 623, 628, 



629; 7, 138; 10, 415, 419, 443, 12, 



11, 12, 19, 20, 21, 23, 24. 



— formosalis 12, 20. 



— nymphaeata 6, 6171629; t28f 1— 5; 

 10, 375, 415! t 18 f 1—6; t 19 f 49; 



12, 5, 11, 20; SJ, 135; S2, 75. 



— obliterans 12, 24. 



— stagnata 10, 3<5, 415! SI, 135. 

 Hydrocampidae 12, 17. 

 Hydroceratiuidao S6, 525. 

 Hydi'ocbelidon hybrida 2, 951; S2, 



41. 



— nigra 6, 151; S2, 41. 

 Hydrocboei'us 5, 373, 384; 13, 281, 



282; 16, 610. 



— capybara 2, 179; 5, 386; 13, 281; 

 14, 344. 



— gryphus 4, 364. 

 Hydrochoreutes krameri 19, 90, 



95. 

 Hydroeichla ruficapilla 2, 950. 

 Hydrocladium 10, 529. 

 Hydrocorallinae 6, 667. 

 Hydrocvoii 10, 155, 188, 194. 



— lineatus 10, 155, 192. 

 Hydrodeiidi'on 10, 505. 

 Hydroccia SI, 25, 32, 39. 



— V. erythrostigma SI, 108. 



— leucographa SI, 108. 



— V. lucens SI, 44, 108. 



— micacea SI, 7, 15, 20, 25, 37, 

 108. 



— nictitans SI, 7, 25, 108. 

 Hydrogale niaciilicollis 4, 182. 

 Hy(b-oidea 19, 534; S2, 94—96. 

 Hydroiden 8, 240. 



— der magelhaen.sischen Region 

 und chilenischen Küste S6, 493 — 

 714. 



— von Ost Spitzbergen 8, 391 — 

 438. 



— aus dem Stillen Ocean 14,349 — 

 379. 



Hydi'oides norvegica S2, 89. 

 Hy<h'oidmedusen des arktischen Ge- 

 ■biets 11, 451-468. 



