374 GLOSSARY. 
Byssus. (Greek, dzssos, flax.) Silk anchor-threads of the mussel, 
etc, 
Cilia. (Latin, cé/iwm, an eyelash.) Hair-like organs of Infusoria. 
Ceelenterata. (Greek, ots, hollow; enteron, an intestine.) 
Didelphia. (Greek, dis, twice ; delphus, the womb.) The marsupials, 
Echinodermata, (Greek, echinos, a hedgehog ; derma, skin.) The 
star-fishes, etc. ; 
Elytra. (Greek, elytron, sheath.) Horny wing-covers of beetles. 
Fauna. (Latin, fawn, rural gods.) The native animals of a certain 
locality. 
Foraminifera, (Latin, foramen, « hole; fero, I bear.) Rhizopods 
with perforated shells. 
Gregarinida. (Latin, grex, a flock.) A class of Protozoans, 
Monodelphia. (Greek, monos, single ; delphus, womb.) The division 
including all the higher orders of mammalia. 
Myriapoda. (Greek, murios, ten thousand ; fous, a foot.) Centi- 
pedes, etc. 
Monotremata. (Greek, monos, single ; trema, an opening.) An order 
of mammalia in which the intestinal, urinary, and genital organs open 
into a common cloaca. 
Oviparous. (Latin, ovzm, an egg ; pario, I bring forth.) Applied to 
animals which produce eggs instead of living young. 
Ovipositor. (Latin, ovum, an egg; pono,I place.) In insects an 
organ by which eggs are deposited in wood, etc. 
Ovoviviparous, (Latin, ovum, an egg; vivo, I live; paiva, I bring 
forth.) A term applied to animals which retain the eggs within 
their bodies until they are hatched. 
Pelagic. Living on the high seas in mid-ocean. 
Perissodactyla. (Greek, evéssos, uneven ; datulos, finger.) Uneven- 
toed ungulates. 
Protoplasm. (Greek, proéos, first; plasma, I mold.) The primitive 
basis of organic tissue. 
Pseudopodia. (Greek, psewdos, false ; ozs, feet.) Temporary foot- 
like processes of Protozoans. 
Rotifer. (Latin, vofa, a wheel ; fero, I bear.) A class of worms. 
Spiracle. (Latin, sf27o, to breathe.) The breathing-pores of insects, 
Septa. (Latin, partitions.) Applied to the walls of the chambers of 
the Nautilus, etc. 
Spicula. (Latin, spiculum, a point.) Applied to the pointed bodies 
found in sponges. 
Trachea. (Greek, tracheia, the windpipe.) The tube which con- 
nects the lungs with the mouth. 
