x CONTENTS 
CHAPTER LXV.—ASSOCIATION OF ORGANISMS—MESS- 
MATES OR COMMENSALS (CoMMENSALISM) 
FISHES (PISCES) AS MESSMATES—Fierasfers and Sea-Cucumbers. Perch-like 
Fishes (Amphiprion) and Giant Sea-Anemones (Discosoma) of Australia. 
Indian Rock-Perch (M/inous inermis) and Encrusting Zoophyte (Stylactis 
minot) - . 
MOLLuscs (MOLLUSCA) AS MESSMATES—Indian Sea-Snail (Pleurotoma symbiotes) 
and Colonial Sea-Anemones (Zfizoanthus). Bivalve Molluscs associated with 
Sea-Urchins and Crustaceans - - 
INSECTS (INSECTA) AS MESSMATES—Humble-Bees (Bombus) and Lodger-Bees 
(Pstthyrus). Ants and Aphides. Slave-making Ants. Ants’-Nest Insects 
(Myrmecophilous Insects) and other Guests of Ants - 
CRABS (BRACHYURA) AS MESSMATES—Buffoon-Crab (Dorippe facchino) and 
Sea-Anemone (Cancrisocia expansa). WHermit-Crabs (Eupagurus, &c.) and 
Cloak-Anemones (Adamsia), Hydroid Zoophytes (Hydractinia), and Colonial 
Sea-Anemones (Zfzzoanthus). Sponge-Crabs (Dromid@). Hermit-Crab 
(Eupagurus) and Sponge (Suberites) 
SIPHON-WORMS (GEPHYREA) AS MESSMATES—Aspidosiphon and Cup-Corals — - 
CHAPTER LXVI.—ASSOCIATION OF ORGANISMS—PARASITES 
Ectoparasites and Endoparasites. Origin of Parasitism, and Degeneration resulting 
from the Habit. Fecundity of Parasites. Brood Parasitism 
BIRDS (AVES) AS BROOD-PARASITES—Cuckoo (Cuculus canorus). Cow-Birds 
(Molobrus) 
FISHES (PISCES) AS PARASITES—Lampreys and Hags (Cyclostomata) 
MoLuuscs (MOLLUSCA) AS PARASITES—Parasitic Sea-Snails (Zhyca, Stilaster, 
Entocolax, Entoconcha). WLarve (Glochidia) of Freshwater Mussels - 
INSECTS (INSECTA) AS PARASITES—Parasitic Bugs (Hemiptera)—Bed-Bug (Cimex 
lectularius), Reduvius, Lice - 
Parasitic Flies (Diptera)—Gnats, Midges, &c., Forest-Fly (Aippobosca 
eguina), Deer-Fly (Liptoptena cervi), Swallow-Fly (Stenopteryx 
hirundinis), Sheep-“ Tick” (Melophagus ovis), Bee-“ Louse” (Braula 
ceca), Nycteribia, Horse-Bot ca abel eguz), Sheep-Bot (@strus 
ovis), Fleas - - 
Beetles (Coleoptera) as Parasites and Brood-Parasites—Parasites of Bees 
and Wasps (Stylofide), Oil-Beetles (Sz¢arzs and Meloé) 
Parasitic Membrane-winged Insects (ffymenoptera)—\chneumon- Flies 
(Polynema, Microgaster, Pimpla, Pteromalus, Agriotypus, Sia 
Thalessa, Leucospis) 
SPIDER-LIKE ANIMALS (ARACHNIDA) AS PARASITES— Ticks and Mites (Acarina) 
—Ticks (Lxodes), Mange- or Itch-Mites (Dermatophagus, Dermatocoptes, Sar- 
coptes), Hair-Mites (Szmonea). Tongue-Worms (Linguatula) : 
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