392 GLOSSARY. 
PrycHoceERAS (Gr. ptuché, a fold; keras, ahorn). <A genus of Ammonitide. 
PULMONATE. Possessing lungs. 
PYRIFORM (Lat. pyrus, a pear; and forma, form). Pear-shaped. 
QUADRUMANA (Lat. quatuor, four; manus, hand). The order of Mammals 
comprising the Apes, Monkeys, Baboons, Lemurs, &c. 
RaDiata (Lat. radius, a ray). Formerly applied to a large number of animals 
which are now placed in separate sub-kingdoms (e.g., the Celenterata, the 
Echinodermata, the Infusoria, &c.) 
RaADIOLARIA (Lat. radius, a ray). A division of Protozoa. 
Ramus (Lat. a branch). Applied to each half or branch of the lower jaw, or 
mandible, of Vertebrates. 
RaPtorEs (Lat. rapto, I plunder). The order of the Birds of Prey. 
RASORES (Lat. rado, I scratch). The order of the Scratching Birds (Fowls, 
Pigeons, &c.) 
RECEPTACULITES (Lat. vreceptaculum, a storehouse). An extinct genus of 
Protozoa. 
REPTILIA (Lat. repto, I crawl). The class of the Vertebrata comprising the 
Tortoises, Snakes, Lizards, Crocodiles, &c. 
RETEPORA (Lat. reté, a net ; porus, a pore). A genus of Lace-corals (Polyzoa). 
RHAMPHORHYNCHUS (Gr. rhamphos, beak; rhugchos, nose). A genus of 
Pterosaurian Reptiles. 
RHINOCEROS (Gr. rhis, the nose; keras, horn). A genus of Hoofed Quadru- 
peds. 
RHIZOPODA (Gr. rhiza, a root; and pous, foot). The division of Protozoa com- 
prising all those which are capable of emitting pseudopodia. 
RHYNCHOLITES (Gr. rhugchos, beak ; and lithos, stone). Beak-shaped fossils 
consisting of the mandibles of Cephalopoda. 
RHYNCHONELLA (Gr. rhugchos, nose or beak). A genus of Brachiopods. 
RopDENTIA (Lat. rodo, I gnaw). An order of the Mammals; often called Glives 
(Lat. glis, a dormouse). 
Rotax (Lat. rota, a wheel). A genus of Foraminifera. 
Rueosa (Lat rugosus, wrinkled). An order of Corals. 
RUMINANTIA (Lat. rwminor, I chew the cud). The group of Hoofed Quadru- 
peds (Ungulata) which ‘‘ ruminate’”’ or chew the cud. 
SARCODE (Gr. sarz, flesh; eidos, form). The jelly-like substance of which the 
bodies of the Protozoa are composed. It is an albuminous body containing 
oil-granules, and is sometimes called ‘‘ animal protoplasm.” 
SAURIA (Gr. saura, a lizard). Any lizard-like Reptile is often spoken of as a 
‘*Saurian ;”’ but the term is sometimes restricted to the Crocodiles alone, 
or to the Crocodiles and Lacertilians. 
SAUROPTERYGIA (Gr. saura ; pterux, wing). An extinct order of Reptiles, 
called by Huxley Plesiosauria, from the typical genus Plesiosaurus. 
SAURUR# (Gr. saura; oura, tail). The extinct order of Birds comprising 
only the Archaeopteryx. 
SCANSORES (Lat. scando, I climb). The order of the Climbing Birds (Parrots, 
Woodpeckers, &c.) 
SCAPHITES (Lat. scapha, a boat). A genus of the Ammonitide. 
ScoLiITHUs (Gr. skolex, a worm ; lithos, a stone). The vertical burrows of sea- 
worms in rocks. 
Scuta (Lat. scutwm, a shield). Applied to any shield-like plates ; especially to 
those which are developed in the integument of many Reptiles. 
SELACHIA or SELAGHII (Gr. selachos, a cartilaginous fish, probably a shark). 
The sub-order of Elasmobranchii comprising the Sharks and Dog-fishes. 
SEPIOSTAIRE. The internal shell of the Sepia, commonly known as the 
‘“cuttle-bone.” 
Serta. Partitions. 
SERPENTIFORM. Resembling a serpent in shape. 
SERTULARIDA (Lat. sertum, a wreath). An order of Hydrozoa. 
