XXVI 
CONTENTS. 
Orthoptera. 
Page 
The General Sub- 
ject 269 
Forficulidae .... 270 
By R. McLachlan, F.R.S., F.L.S., &c. 
Page 
Blattidse 270 
Mantidse 272 
Phasmatidae. . . . 272 
Rhynchota 
General Subject . 276 
Hemiptera — He- 
teroptera ... 277 
Pentatomidac . . 280 
Coreidae 284 
Berytidac .... 286 
Lygaeidac .... 286 
Pyrrhocoridao . 287 
Tingididae . . .288 
Aradidae .... 288 
By W. F. Kirby, M 
Capsidae 288 
Anthocoridae . . 290 
Saldidae 290 
Nabidae 290 
Reduviidac . . . 290 
Hydrometridaa . 294 
Corisidao .... 294 
Hemiptera — Ho- 
moptera . . . 294 
Cicadidae .... 294 
VERMES. By 
General Notes . 1 
Platyhelminthes . 1 
Nematohelminthes 6 
ECHINODERMATA. 
Titles 1 
General Morpho- 
logy . ...... 3 
Acanthocephali . 
Rotatoria .... 
Gephyrea .... 
By F. Jeffrey Bell 
Echinoidea .... 5 
Asteroidea .... 6 
Ophiuroidea ... 7 
COELENTERATA. 
Gryllidae . . . 
Page 
. . 272 
Locustidae . . 
. . 273 
Acridiidae . . 
. . 274 
.E.S., &c. 
Cercopidae . 
. . 294 
Fulgoridae . 
. . 294 
Membracidae 
. . 297 
lassidae . . . 
. 297 
Psyllidae . . 
. . 298 
Aphididae . . 
. . 299 
Coccidae . . . 
. . 301 
Aleurodidae . 
. . 303 
Anoplura . . . 
. . 303 
F.R.M.S., F.Z.S. 
Annulata . . . 
. . 9 
Enteropneusti 
. . 12 
Orthonectida 
. . 12 
M.A., F.R.M.S., 
, F.Z.S. 
Holothuroidea 
. . 7 
Crinoidea . . . 
. . 8 
Hydrozoa and Ctenopiiora. 
Titles 
Hydromedusac — 
Gymnoblastea- Anthomedusac 
Calyptoblastea-Leptomedusaa 
Trachomedusae 
Narcomedusae 
Hydrocorallinae 
] 
7 
7 
8 
8 
9 
By A. G. Bourne, B.Sc. (Lond.). 
Graptolites 9 
Scyphomedusae — 
Stauromedusac . 9 
Peromedusao 9 
Cubomedusae 9 
Discerned usae 10 
Anthozoa. By S. J. Hickson, B.A., B.Sc. (Lond.), &c. 
Titles 10 I OctactiniaB 14 
Hexactiniae 12 | 
SPONGIIDA. By Stuart 0. Ridley, M.A., F.L.S., F.R.M.S. 
Chief Works on Recent Sponges 1 
Faunae . 3 
Genera, Species, &c. , referred to 4 
New Genera and Species ... 8 
General Anatomy and Physi- 
ology 
Fossil Sponges 
11 
13 
PROTOZOA. By Stuart O. Ridley, M.A., F.L.S., F.R.M.S. 
The General Subject 1 I Rhizopoda 11 I Flagellata, Monads 26 
Infusoria 4 | Fossil Rhizopoda 24 | Gregarinida ... 32 
Index to Genera and Subgeneka described as New, &c. 
