GLOSSARY 



THY-SAN-U'KA (Gr. thusanoi, 

 fringes; oura, tail). The low- 

 est order of insects. 



TO-MEN-TOSE'. Covered with fine 

 matted hairs. 



TRA-BEC'U-L/E (cranii), dim. of 

 trabs, a beam. Applied to the 

 longitudinal cartilaginous bars 

 of the fore-part of the head of 

 vertebrate embryos. 



TRA'CHE-A (Gr. tracheia, the 

 rough windpipe). The respira- 

 tory tube in vertebrates; the 

 air-tube of tracheate insects. 



TREM-A-TO'DA (Gr. trema, a pore 

 or hole). An order of worms. 



TRUN CA'TED. Cut squarely off ; 

 docked. 



TU-BER'CU-LOSE. 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-GU-LA'TA (Ij&t.ungula, a hoof). 

 The order of hoofed mammals. 



U-RO-DE'LA (Gr. oura, tail; delos, 

 visible). The tailed Batrachi- 

 ans. 



U-RO-MERE' (Gr. ouros,t&i\ ; meros, 

 a part). Any of the abdominal 

 segments of an Arthropod. 



U-ROP'O-DA (Gr. ouros; pous, po- 

 dos, foot). Any of the abdom- 

 inal feet of Arthropoda. 



U-RO-SOME' (Gr. ouros, tail ; meros, 

 a part). The abdomen of Ar- 

 thropods. 



U-RO-STERN'ITE. The sternal or 

 under piece of the uromeres or 

 abdominal segments of insects. 



VAC-U-OLE' (Lat. menus, 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. 



VEN'TRAL. Applied to the under 

 side of the abdomen, or of the 

 body of invertebrates. 



VEN'TRI CLE (Lat. ventrtculus, di- 

 minutive of ventei; belly). One 

 of the cavities of the heart. 



VER-RIC'U-LATE. With thick set 

 tufts of parallel hairs. 



VER'RU-COSE. Covered with wart- 

 like prominences. 



VER'TE-BRA (Lat, verto, I turn). 

 One of the bones of the spinal 

 column or backbone. 



VER-TI-CIL'LATE. Placed ia 

 whirls. 



VES'I-CLE (Lat. vesica, a blad- 

 der). A little sac, bladder, or 

 cyst. 



VIS'CE-RA (Lat. viscus). The in- 

 ternal organs of the body. 



VI-VIP'A-ROUS (Lat. vivus, alive; 

 and pario, I bring forth). Ap- 

 plied to animals which bring, 

 forth their young alive. 



ZO'OID (Gr. soon, 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; 

 phuton, plant). Applied to the 

 plant-like polyps, sertularians r 

 and sponges. 



