350 GLOSSARY. 



T^E-NI'A-DA (Gr. tainia, a ribbon). The division ofScoleoida comprising the 

 Tape-worms. 



TJE'NI-OID (Gr. tainia / and eidos, form). Ribbon-shaped, like a Tape-worm. 



TAR-SO-MET-A-TAR'SUS. The single bone in the leg of Birds produced by the 

 union and anchylosis of the lower or distal portion of the tarsus with the 

 whole of ihe metatarsus. 



TAR'SUS (Gr. tarsos, the flat of the foot). The small bones which form the 

 ankle (or " instep " of man), and which correspond with the wrist (carpus) 

 of the anterior limb. 



TEC-TI-BRAN-CHI-A'TA (Lat. tectus, covered ; and Gr. Iragchia, gills). A divi- 

 sion of OpistJiobrancMate Gasteropoda in which the gills are protected by 

 the mantle. 



TEG-U-MENT'AR-Y (Lat. tegumentum, a covering). Connected with the integu- 

 ment or skin. 



TEL-E-OS'TE-I (Gr. teleios, perfect ; osteon, bone). The order of the " Bony " 

 Fishes. 



TEL' SON (Gr. telson, a limit). The last joint in the abdomen of Crustacea; 

 variously regarded as a segment without appendages, or as an azygos ap- 

 pendage. 



TEN-U-*-ROS'TRES (Lat. tennis, slender ; rostrum, beak). A group of the Perch- 

 ing Birds characterized by their slender beaks. 



TERGUM (Lat. for back). The dorsal arc of the somite of an Arthropod. 



TER-RES'TRI-AL. 



TER-RIC'O-LA (Lat. terra, earth ; and colo, I inhabit). Employed occasionally 

 to designate the Earth-worms (Lumbricidce). 



TEST (Lat. testa, shell). The shell of Mollusca, which are for this reason 

 sometimes called "Testacea /" also, the calcareous case of Echinoderma ; 

 also, the thick, leathery, outer tunic in the Tunicata. 



TES-TA'CEOUS. Provided with a shell or hard covering. 



TES'TIS (Lat. testis, the testicle). The organ in the male animal which pro- 

 duces the generative fluid or semen. 



TET-RA-BRAN-CHI-A'TA (Gr. Utra, four ; bragchia, gills). The order of Cephalop- 

 oda, characterized by the possession of four gills. 



THA-LAS-SI-COL'LI-DA (Gr. thalassa, sea ; kolla, glue). A division of Protozoa. 



THE'CA (Gr. theke, a sheath). A sheath or receptacle. 



THE-CO-SOM'A-TA /Gr. ihelce ; and soma, body). A division of Pteropodous 

 Molluscs, in which the body is protected by an external shell. 



THE-RI-O-MOR'PHA (Gr. therion, beast ; morphe, shape). Applied by Owen to 

 the order of the Tail-less Amphibians (Anoura). 



THO'RAX (Gr. for a breast-plate). The chest. 



THREAD-CELLS. (See Cnidse.) 



THYS-A-NU'RA (Gr. thusanoi, fringes ; and oura, tail). An order of Apterous 

 Insects. 



TIB'IA (Lat. for a flute). The shin-bone, being the innermost of the two bones 

 of the leg, and corresponding with the radius in the anterior extremity. 



TO-TI-PAL'MA-TJB (Lat. totus, whole : palma, the palm of the hand). A group 

 of Wading Birds in which the hallux is united to the other toes by mem- 

 brane, so that the'feet are completely webbed. 



TRA-CHE'A (Gr. tracheia, the wind-pipe). The tube which conveys air to the 

 lungs in the air-breathing Vertebrates. 



TRA-CHE'^E. The breathing-tubes of insects and other articulate animals. 



TRA-CHE-A'RI-A. The division of Arachnida which breathe by means of tra- 

 cheae. 



TREM-A-TO'DA (Gr. trema, a pore ; eidos, form). An order ofScolecida. 



TRICH'O-CYSTS (Gr. thrir, hair ; and Tcustis, a cyst). Peculiar cells found in 

 certain Infusoria, and very nearly identical with the " thread-cells " of 

 Ccelenterata. 



TRI-LOB'I-TA (Gr. treis, three ; lolos, a lobe). An extinct order of Crustaceans. 



TRIT-O-ZO'OID (Gr. tritos, third ; zoijn, animal ; and eidos, form). The zooid 

 produced by a deuterozooid ; that is to say, a zooid of the third genera- 

 tion. 



