800 GLOSSARY. 



GONOPHORE (Gr. ffonos , and phero, I carry). The generative buds, or recep- 

 tacles of the reproductive elements, in the Hydrozoa, whether these become 



detached or not. 

 GONOSOME (Gr. gonos; and soma, body). Applied as a collective term to the 



reproductive zooids of a ffydrozob'n. 

 GONOTHECA (Gr. gonos; and theke, a case). The chitinous receptacle within 



which the gonophores of certain of the Hydrozoa are produced. 

 GRALLATORES (Lat. grallce, stilts). The order of the long-legged Wading 



Birds. 

 GRANIVOROUS (Lat. granum, a grain or seed ; voro, I devour). Living upon 



grains or other seeds. 

 GRAPTOLITID, (Gr. grapho, I write ; lithos, stone). An extinct sub-class of 



the ffydrozoa. 

 GREGARINIDA (Lat. gregarius, occurring in numbers together). A class of the 



Protozoa. 

 GUARD. The cylindrical fibrous sheath with which the internal chambered 



shell (phragmacone) of a Belemnite is protected. 

 GYMNOBLASTIO (Gr. gumnos, naked ; and blastos, a bud). Applied by Prof. 



Allman to those ffydrozoa in which the nutritive and reproductive buds are 



not protected by horny receptacles. 

 GYMNOL.EMATA (Gr. gumnos, naked ; laimos, the throat). An order of the 



Polyzoa in which the mouth is devoid of the valvular structure known as 



the "epistoine." 



GYMNOPHIONA (Gr. gumnos, naked ; ophis, a snake). The order of the Am- 

 phibia comprising the snake-like Ctecilice. 

 GYMNOPHTHALMATA (Gr. gumnos; and ophthalmos, the eye). Applied by 



Edward Forbes to those Medusas in which the eye-specks at the margin of 



the disc are unprotected. The division is now abandoned. 

 GYMNOSOMATA (Gr. gumnos ; and soma, the body). The order of Pteropoda 



in which the body is not protected by a shell. 

 GYNOPHORES (Gr. gune, woman ; phero, I carry). The generative buds, or 



gonophores, of ffydrozoa, which contain ova alone, and differ in form from 



those which contain spermatozoa. 

 GYRENCEPHALA (Gr. guroo, I wind about ; egkephalos, brain). Applied by 



Owen to a section of the Mammalia in which the cerebral hemispheres are 



abundantly convoluted. 



H.EMAL (Gr. haima, blood). Connected with the blood-vessels, or with the 

 circulatory system. 



H.EMATOCRYA (Gr. haima, blood ; cruos, cold). Applied by Owen to the 

 "cold-blooded" Vertebrates viz., the Fishes, Amphibia, and Reptiles. 



H^MATOTHERMA (Gr. haima, blood; thermos, warm). Applied by Owen to 

 the "warm-blooded" Vertebrates viz., Birds and Mammals. 



HALLUX (Lat. allex, the thumb or great toe). The innermost of the five 

 digits which normally compose the hind foot of a Vertebrate animal. In 

 man, the great toe. 



HALTERES (Gr. halteres, weights used by athletes to steady themselves in leap- 

 ing:). The rudimentary filaments or "balancers" which represent the 

 posterior pair of wings in the Diptera, an order of Insects. 



HAUSTELLATE (Lat. haurio, I drink). Adapted for sucking or pumping up 

 fluids ; applied to the mouth of certain Crustacea and Insecta. 



HECTOCOTYLUS (Gr. hekaton, a hundred ; kotulos, a cup). The metamorphosed 

 reproductive arm of certain of the male Cuttle-fishes. In the Argonaut the 

 arm becomes detached, and was originally described as a parasitic worm. 



HEUOZOA (Gr. helios, sun ; zoon, animal). An order of Protozoa, with radi- 

 ating pseudopodia. 



HELMINTHOID (Gr. helmins, an intestinal worm). Worm -shaped, vermiform. 



HEMELYTRA (Gr. hemi, half ; elutron, a sheath). The wings of certain Insects, 

 in which the apex of the wing is membranous, whilst the inner portion is 

 chitinous, and resembles the elytron of a beetle. 



HEMIMETABOLIO (Gr. hemi, half; metabole, change). Applied to those Insects 

 which undergo an incomplete metamorphosis. 



