XXIV ' CONTENTS. 
Rhynchota. By E. C. Eye, F.Z.S. 
Page ^ Page 
Hemiptera — Heteroptera . . . 445 | Hemiptera — Homoptera. . . . 460 
VERMES. By C. F. Lutken, Ph.D., F.R.D.A., &c. 
Page 
Rotatoria 467 
Chgetopoda .... 467 
Discophora .... 478 
Page 
Turbellaria .... 478 
Trematoda .... 485 
Cestoida 487 
Page 
Nematoda .... 490 
Acanthocephala . 492 
Gephyrea 492 
ECHINODERMATA. By C. F. Lutken, Ph.D., F.R.D.A., &c. 
General Subject . 494 I Echinid^ 497 I Ophiuridae .... 502 
Holothuriidse . . . 496 Asteridae 501 Crinoidae 502 
CCELENTERATA. By C. F. Lutken, Ph.D., F.R.D.A., &c. 
Anthozoa 504 I Octactinia .... 508 I Ctenophora .... 515 
Polyactinia .... 506 | Hydrozoa 510 | 
PROTOZOA. By C. F. Lutken, Ph.D., F.R.D.A., &c. 
Spongozoa .... 517 I Gregarinse .... 528 j Rhizopoda .... 529 
Infusoria 521 
Index to Genera and SubgenePvA described as new, &o. 
533 
