392 GLOSSARY. 



Pttchoceeas (Gr. ptvxM, a fold ; keras, a horn). A genus of Aminonitidce. 



PULMONATE. Possessing lungs. 



Ptriform (Lat. pyrios, a pear; and/w7n«, form). Pear-shaped. 



QUADRUMAXA (Lat. quatuor, four ; inanus, hand). The order of Mammals 

 comprising the Apes, Monkeys, Bahoons, Lemurs, &c. 



Radiata (Lat. radius, a ray). Formerly applied to a large number of animals 

 which are no"sv placed in separate sub-kingdoms {e.g., the Ccelenterata, the 

 Echinodermata, the Infus&ria, &c.) 



Radiolaria (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. rajjto, 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. receptaculum, 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. rete, a net ; pones, a pore), A genus of Lace- corals {Polyzoa). 



Rhamphorhtnchus (Gr. rfiamphos, beak ; rhugchos, nose). A genus of 

 Pterosaurian Reptiles. 



Rhinoceros (Gr. rhU, the nose ; keras, horn). A genus of Hoofed Quadru- 

 peds. 



Rhizopoda (Gr. rhha, a root ; 2ind^pous, foot). The di-s-ision of Protozoa com- 

 prising all those which are capable of emitting pseudopodia. 



Rhtncholites (Gr. rhugchos, beak; and lithos, stone). Beak-shaped fossils 

 consisting of the mandibles oi Cephalopoda. 



Rhynchonella (Gr. rhugdws, nose or beak). A genus of Brachiopods. 



RoDENTiA (Lat. rodo, I gnaw). An order of the Mammals ; often called Glires 

 (Lat. glis, a dormouse). 



ROTALIA (Lat. rota, a wheel). A genus of Foraminifera. 



RUGOSA (Lat rugosus, wrinkled). An order of Corals. 



RUMINANTIA (Lat. ruminor, I chew the cud). The group of Hoofed Quadru- 

 peds {Ungulata) which " ruminate " or chew the cud. 



Sarcode (Gr. sarx, ilesh ; 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. 



Sauroptertgia (Gr. saura; ptermx, "wing). An extinct order of Reptiles, 

 called by Huxley Plesiosauria, from the typical genus Plesiosaurus. 



Saurur^ (Gr. saura; aura, tail). The extinct order of Birds comprising 

 only the Archoeoptei'yx. 



ScANSORES (Lat. scando, I climb). The order of the Climbing Birds (Parrots, 

 Woodpeckers, kc.) 



SCAPHITES (Lat. scapha, a boat). A genus of the Amvumitidm. 



SCOLITHUS (Gr. skolex, a worm ; lithos, a stone). The vertical burrows of sea- 

 worms in rocks. 



Scuta (Lat. scutum, a shield). Applied to any shield-like plates ; especially to 

 those which are developed in the integument of many Reptiles. 



Selachia or Selachii (Gr. selachos, a cartilaginous fish, probably a shark). 

 The sub-order of Elasmohromchii comprising the Sharks and Dog-fiskes. 



Sepiostaire. The internal shell of the Sepia, commonly known as the 

 "cuttle-bone." 



Septa. Partitions, 



Serpenteform. Resembling a serpent in shape. 



Sertularida (Lat. sertum, a -wreath). An order of Hydrozoa. 



