698 



QL0S8ABT 



Tht-san-u'ka (Gr. thusanoi, 

 fringes; owras, tail). The low- 

 est order of insects. 



Tomentosb'. Covered with fine 

 matted hairs. 



Tba-bec'u-l« (cranii), dim. of 

 trabs, a beam. Applied to the 

 loDgitudiual cartilaginous bars 

 of the fore-part of the head of 

 vertebrate embryos. 



Tba'chb-a (Gr. traeheia, the 

 rough windpipe). The respira- 

 tory tube in vertebrates; the 

 air-tube of tracheate insects. 



Tbbm-a-to'da (Gr. trema, a pore 

 or hole). An order of worms. 



Trunca'tbd. Cut squarely off ; 

 docked. 



Tti-bbk'cxt-losb. Covered with 

 tubercles. 



TuN-i-CA'TA(Lat. tunica, a cloak). 

 The class of worms called As- 

 cidians. 



Um'bo {Lat. the boss of a shield). 

 The beak of a Lamellibranchi- 

 ate shell. 



Un-gtj-la'ta (Lat.MTT^Mto, a hoof). 

 The order of hoofed mammals. 



TJ-bo-db'I/A (Gr. oura, tail ; delos, 

 visible). The tailed Batrachi- 

 ans. 



U-eo-mbrb' (Gr. ouros,\,&\\ ; meros, 

 a part). Any of the abdominal 

 segments of an Artliropod. 



U-Bop'o-DA (Gr. ouros; pons, po- 

 dos, foot). Any of the abdom- 

 inal feet of Arthropoda. 



U-BO some' (Gtw ouros, tail ; ?n«»'os, 

 a part). The abdomen of Ar- 

 thropods. 



U-BO stbbn'ite. The sternal or 

 under piece of the uromeres or 

 abdominal segments of insects. 



Vac-tj-ole' (Lat. vacuus, empty). 

 The little cavities in the bodies 

 of Protozoa. 



Vein. Applied to the ribs or 

 " nervures" of the wings of in- 

 sects; the branches of the veins 

 are called venules. 



Vbn'tbal. Applied to the under 

 side of the abdomen, or of the 

 body of invertebrates. 



Vbn'tbi CLE (Lat. ventriculus, di- 

 minutive of venter, belly). One 

 of the cavities of the heart. 



Veb-eic'tj-latb. With thickset 

 tufts of parallel hairs. 



Vbe'bu-cosb. Covered with wart- 

 like prominences. 



Vbb'te-bba (Lat. verto, I turn). 

 One of the bones of the spinal 

 column or backbone. 



Vee-ti-cil'late. Placed in 

 ■wliirls. 



Vbs'i-clb (Lat. vesica, a blad- 

 der). A little sac, bladder, or 

 cyst. 



Vis'cB-EA (Lat. viscus). The in- 

 ternal organs of the body. 



Vi-vip'A-EOtJS (Lat. mvus, alive; 

 and pario, I bring forth). Ap- 

 plied to animals "which bring 

 forth their young alive. 



Zo'SiD (Gr. zoon, animal; eidos, 

 form). The highly specialized 

 organs of such animals as the 

 Hydroids, and other compound 

 forms which have a marked in- 

 dividuality, and which might 

 be mistaken for genuine indi- 

 viduals. 



Zo-o'PHYTE (Gr. zoon, animal; 

 p/witore, plant). Applied to the 

 plant-like polyps, sertularians, 

 and sponges. 



