ZOOLOGICAL GLOSSARY 773 



Proteus Ayani.yus. The olm, a cave salamander: urodelan amphibian, 726 

 PROTOCHORDATES. Primitive chordates, comprising Hemichordata, Tunicata and Cephalo- 



chordata. 

 Protoptervs. a kmg-fish of West Africa: a genus of dipnoan fish, 312 

 PROTOZOA. A phylum comprising the lowest and simplest unicellular animals, mainly aquatic, 



such as Amoeba, Euglena, malaria parasite, etc. 

 PROTUKA. An order of minute insects, lacking wings, eyes and antennae. 

 PsEPHVRVs. Sword-bill sturgeon found in the Yangtze-Kiang, China: a chondrostean fi.sh. 

 PsETTODES. A genus of flounder: a teleostean flat-fish (Pleuronectidse), 329 

 PSEUDOSCORPiONiDEA. An Order of Arachnida comprising the book-scorpions, minute aziimals 



resembling scorpions but witliout long tail and sting. 

 PsTLLA. Jumping plant-louse: a genus of hemipterous insect. 

 Pteraspis. An extinct agnathous fish, 234 



Pterocera lambis. Spider- or scorpion-shell: a gastropod mollusc, 198 

 Pterois. Lion-fish of tropical Pacific: a poi.sonous teleostean fish (Scorpsenidse). 

 Pteromts. Flying squirrel: an Asiatic rodent (Sciuridse). 



Pteropvs. Flying fox: a genus of fruit -eating bat (Megachiroptera), 442, 607. 

 Pterotrachea. A shell-less heteropod: a genus of gastropod mollusc. 

 Pttchodera. a balanoglossid: hemichordate. 



PvFFiyvs PVFFisvs. Manx shearwater: an oceanic bird (Procellariidae), 407 

 PvLEX IRRITASS. The human flea: a blood-sucking insect (Aphaniptera), 219 

 PULMONATA. A sub-class of gastropod molluscs comprising the terrestrial snails and slugs 



and fresh-water snails. 

 PuTORivs FVRo. The ferret: a mustelid carnivore. 

 P. pvTORius. The polecat, 444. 



PYCNOGONIDA. An Order of Arachnids comprising small marine animals — " sea-spiders ", 217 . 

 Praopus LEPiDOPVs. Scale-footed lizard: a snake-shaped lizard of Australasia, without 



forelimbs. 

 Pfrophorus. a genus of fire-fly: coleopterous insect (Elaterid). 

 Ptrosoma. a luminous, floating colonial tunicate of tropical seas. 

 Pyrrhvla. Bullfinch: a genus of passerine bird (finch family). 

 Pythos. Python: a genus of boid snake. 

 P. MOLURVs. Indian python. 

 P . REGivs. West African python. 

 P. reticplatus. Reticulated python of Malaya. 



RADIOLARIA. An Order of rhizopod Protozoa with a horny or siliceous skeleton, 179 



Raja. Ray: a genus of batoid selachian fish, 287 



R. BATis. The skate. 



R. CLAVATA. Thornback ray, 280 



R. MoyxAGUi {maculata). Spotted ray, 280 



Rasa. The common genus of frog: an anuran amphibian, 335 



R. CATESBiASA. BuU-frog. 



R. EscuLEXTA. Edible water-frog. 



R. piPiEss. Leopard frog, 342 



R. TEMPORARiA. Common European frog. 



Ranatra. Water-scorpion: a genus of hemipterous insect (Nepid). 



Ranzama truncata. Truncated sun-fish: a teleostean fish. 



RATIT^ (PAL^OGNATH.^). Running birds, such as kiwi, ostrich, emu, etc. 



Rattvs. Rat: a genus of myomorph rodent (Muridse). 



Rhacophorus LEVcoMYSTAX. Malayan "flying" tree-frog: an anuran amphibian (Ranidse). 



Rhamdia. a genus of cavernicolous catfish: siluroid teleostean fish. 



Rhea. South American ostrich or rhea: flightless bird (Ratitse), 410 



RniyEVRA floridasa. Florida worm lizard: a limbless burrowing reptile. 



RaiyocERos. The rhinoceros — a large perissodactyl of Asia and Africa, 444. 



Rhisoglexa. a wheel-animalcule — a genus of rotifer. 



Rhixophis. a burrowing snake of India: a genus of uropeltid snake. 



RHIZOPODA (sarcodina). A class of mainly amoeboid Protozoa. 



