334 GLOSSARY. 



Folyzoa in which the mouth is devoid of the valvular Btruoture known as 



the " epistome." 

 GTSt-NO-PHi'o-iTA (6r. gurnnoi, naked; ophds, a Bnake). The order of the 



Amjphibia comprising the snake-like CasffiUcs. 

 Gym-noph-thal'ma-ta (Gr. gmnnosi and ophthahnos, the eye). Applied hy 



Edward Forbes to those Medusce m which the eye-speoks at the margin of 



the disc are unprotected. The division is now abandoned. 

 GYii-NO-so'iiA.-TA. (Gt. gumnos / and some, the body). The order of Fteropoda 



in which the body is not protected by a shell. 

 GyN'o-PBOBES (Gr. gune, woman ; phero, I carry). The generative buds, or 



gouophores, of Sydrozoa, which contain ova alone, and diSer in form &om 



those which contain spermatozoa. 

 Gt-keit-oeph'a-la (Gr. guroo, I wind about ; egjeephaloa, brain). Applied by 



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



abundantly convoluted. 



H^'mal (Gr. Mima, blood). Connected with the blood-vessels, or with the 



circulatory system. 

 H.E-11IA-T00 KT-A (Gr. Jiaima, blood ; hruoa^ cold). Applied by Owen to the 

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



H^-ma-to-ther'ma (Gr. haima, blood ; thennos, warm). Applied by Owen to 

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



Hal'lux (Lat. allex, the thumb or great toe). The innermost of the five 

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

 man, the great toe. 



Hal-te'ee3 (Gr. halteres, weights used by athletes to steady themselves in 

 leaping). The rudimentary iilaments or " balancers " which represent the 

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



Haus'tel-late (Lat. Ttaurio, I drink). Adapted for sucking or pumping up 

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



Hec-to-oot y-lus (Gr. liekaton, a hundred ; Jeotulos, a cup). The metamor- 

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

 Argonaut the arm becomes detached, and was originally described as a 

 parasitic worm. 



Hel'mik-thoid (Gr. hel-mijia^ an intestinal worm). "Worm-shaped, vermiform. 



He-mel't-tea (Gr. hemi, half; elwtron, a sheath). The wings of certain In- 

 sects, in which the apex of the wing is membranous, while the inner por- 

 tion is chitinous, and resembles the elytron of a beetle. 



Hem-i-met-a-eol'io (Gr. henU, half; metabole, change). Applied to those 

 insects which undergo an incomplete metamorphosis. 



He-mip'te-ea (Gr. hemi; and pteron, wing). An order of insects in which 

 the anterior wings are sometimes "hemelytra." 



Hee-maph'eo-ditb (Gr. Hermes, Mercury; Aphrodite, Venus). Possessing 

 the characters of both sexes combined. 



Het-e-eo-oee'cal (Gr. heteros, diverse ; kerlcoa, tail). Applied to the tail of 

 Fishes when it is unsymmetrical, or composed of two unequal lobes. 



Het-e-eo-oe'ne-ocs. 



HET-E-Eo-QAif'GLi-ATE (Gr. heteros, diverse ; gagglion, a knot). Possessing a 

 nervous system in which the gangha are scattered and unsymmetrical (as 

 in the Mollusca, for example). 



Het-e-eo-moe'phio (Gr. heteros; morphe, form). Differing in form or shape. 



HEr-E-BOpa'A-ai (Gr. heteros, other; phago, I eat). Applied to Birds the 

 young of which are bom in a helpless condition, and require to be fed by 

 the parents for a longer or shorter period. 



Het-e-eop'o da. 



Hex'a-pod (Gr. liexa, six ; pous, foot). Possessing sLi legs ; applied to the 

 Insecta. 



Hi'LUM (Lat. hilum, a little thing). A small aperture (as in the gemmules of 

 sponges^), or a small depression (as in Noctiluca). 



HiE-n-DiN e-a (Lat. hirudo, a horse-leech). The order of AnneUda com 

 prising the Leeches. 



