GLOSSARY. 385 



•sects discovered by Mr. Kirby, in which the first pair of wings is represented by 



twisted rudiments. 

 SuBMuscuLAR. Beneath muscles or muscular layer. 

 SuBCEsoPHAGEAL. Beneath the gullet. 

 SucTORiA, CLaL sugo, I suck.) The animals provided with mouths for sucking, 



and the appendages of other parts organised for sucking or adhesion. 

 SuPRA-CEsoPHAGEAL. Above the gullet. 

 SuTURAL. Appertaining to a suture. 

 Suture. (Lat. suo, I sew.) The immoveable junction of two parts by their 



margins. 



T^NioiD. (Gr. tainia, a riband; eidos, like.) Riband-shaped, like the Taenia or 



tape-worm. 

 Tapetum. (Lat. iapetum, a carpet.) The coloured layer of the choroid coat of the 



eye. 

 Tarsus. (Gr. tarsos, a part of the foot.) Applied to the last segments of the 



legs of insects. 

 Tectibranchiate. (Lat. tego, I cover; hranckia, gills.) The order of Moll u sea in 



which the gills are covered by the mantle. 

 Tergal. (Lat. <er^Mm, the back.) Belonging to the back. 

 Tetrabranchiate. ( Gr. tetra, four ; hragchia, gills. ) The order of Cephalopods 



with four gills, 

 Teuthid^. (Gr. few^Ais, a calamary.) The family of Cephalopods, of which th© 



calamary is the type. 

 Thoracic. Belonging to the thorax. 

 Thysanoura. ( Gr. thusanoi, fringes ; oiira, a tail. ) A family of apterous insects 



with fringed tails. 

 Tracheae. (Gr. tracheia, the rough artery or windpipe.) The breathing tubes of 



insects. 

 Trachklipods. ( Gr. trachelos, the neck ; pous, a foot. ) The Mollusca which have 



the locomotive disc or foot attached to the head. 

 Trematoda. (Gr. trema, a pore. ) The order of Entozoa characterised by suc- 

 torial pores. 

 Trenchant. Sharp-edged, cutting. 

 Tridactyle. Three-fingered. 

 Trilobate. Divided into three lobes. 

 Trilobite. An extinct genus of Crustacea, the upper surface of whose body is 



divided into three lobes. 

 Triradiate. Consisting of three spokes or rays. 

 Trophi. ( Gr. trophos, a nourisher. ) In insects, the parts of the mouth employed 



in acquiring and preparing the food. 

 Tuberculate. Warty, or covered with small rounded knobs. 

 Tunicata. (Lat. tunica, a cloak.) The class of acephalous Mollusca which are 



enveloped in an elastic tunic not defended by a shell. 



Uncinated. Beset with bent spines like hooks. 



Univalve. (Lat. urnis, one; valvce, doors.) A shell composed of one calcareous 

 piece. 



Vasiform. (Lat. vas, a vessel.) Shaped like a bloodvessel or tube. 



Ventral. Relating to the inferior surface of the body. 



Ventricular. (Lat. ventriculus, a ventricle or small cavity, like those of the 



heart or brain.) Belonging to a ventricle. 

 Vermes, (Lat. vermis, a worm.) Worm-like animals : applied in a very extensive 



sense by Linuceus. 

 Vertebrata. (Lat. vertebra, a bone of the back; from vertere, to turn.) The 



highest division of the Animal Kingdom, characterised by having a back bone. 

 Verticillate (Lat. verticillus, a whirl.) Arranged like the rays of a wheel or 



spindle. 

 Vermiform. Worm-shaped. 



VisicuL.*. ( Lat. t'esica, a bladder. ) Receptacles like little bladders. 



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