GLOSSARY. 



277 



piled to a form of asexual gen- 

 eration where new individuals 

 arise as buds from the body of 

 the parent. 



Gla'bkous. Smooth; opposed 

 to hairy; downy, villous. 



Gland. A cellular sac which 

 secretes, i.e. separates, certain 

 constituents of the blood. The 

 liver is a gland secreting bile ; 

 the kidneys excrete urine. 



Glau'cous. Bluish green or gray. 



GoN-OP'o-DA (Gr. gon^, genera- 

 tion; pous, podos, foot). The 

 modified first pair of iibdomi- 

 nal appendages of the male lob- 

 ster, shrimps, and crabs. 



H^ai'MAL (Gr. haima, blood). 

 Connected with the blood-ves- 

 sels or heart. 



Hal'lux. The thumb or great toe. 



H al'ter-es (Gr. halteres, poisers). 

 Balancers : the rudimentary 

 hind wings of Diptera. 



Hatjs'tel-latb. Furnished with 

 a proboscis so as to take food 

 by suction. 



Hb-mip'tbka (Gr. hemi, half ; 

 pteron, wing). An order of in- 

 sects with the fore-wings part- 

 ly opaque, hence called Leme- 

 lytra. 



Hbb maph'bo-dite (Gr. Hermes, 

 Mercury ; Aphrodite, Venus). 

 Any animal having the organs 

 of both sexes, usually the 

 ovary and testes, combined in 

 the same individual. 



Hb-tb-ko-cek'cal. Unevenly 

 lobed, as in the tall of sharks 

 and Ganoids, when the back- 

 bone is prolonged irto the up- 

 per lobe. 



Het-b-rog'a-my. = Parthenogen- 

 esis. 



Hex-a'po-dous. Provided with 

 six feet. 



Ho MOCBii'CAL. Even-lobed, as 

 in the tails of bony fishes. 



Ho-mol'o-gy (Gr. homologia, 

 agreement). Implies identity 

 in structure between organs 

 which may have different uses ; 

 as the fin of a whale, and the 

 foot of a dog, or a bird's wing. 

 Homology implies blood-rela- 

 tionship, i.e., a community of 

 origin between parts which 

 may have distinct uses. 



Hy'da tid. The bladder-worm, 

 or the cystic stage of a tape- 

 worm. 



Hy-men-op'tbka (Gr. humen, 

 hymen, or membrane; pteron, 

 wing). An order of insects 

 with two pairs of membranous 

 wings. 



Hy'oid (Gr. T, eidos, resem- 

 blance). A bone in mammals 

 resembling the Greek letter U; 

 its form being different in 

 other vertebrates : also called 

 OS lingum, from its supporting 

 the tongue. 



Hy'-po-blast. The under or in- 

 ner layer of the embryo. = 

 ectoblast, and the endoderm of 

 the adult. 



Ima-go. The final or fourth, 

 winged and adult state of in- 

 sects. 



In-b-qui-lat'e-eal. Having the 

 two ends unequal, as in the 

 clam, quohog, and most La- 

 mellibranch shells. 



In-e'qui-talvb. With one yalve 



