HOLOSTETTM 



168 



aOMOLOGTTES 



osteon, bone.] Used by Siebold for a Bub- 

 division of fishes. 



Holosteum, (hol-os'te-um). [Gk. holes, all ; 

 osteon, bone.] Ghickweed: a plant belonging 

 to Caryophyllacese. 



Holoatomata, (hol-os-tom'a-ta). [Gk. holos, 

 whole; stoma, mouth. ]=Phytophagous Gas- 

 teropoda: which have the aperture entire; 

 numerous in Palaeozoic rocks, tf. Siphon- 

 ostomata. 



Holostomatoua, (hol-os-tom'a-tus). [Holosto- 

 mata, q.v.] Having the aperture entire. 



Holothuria, ( hol-o-thd'ri-a ). [Holothourimi, 

 the Greek name.]=:3ea-cucumber: a division 

 of Echinodermata. 



Holothuriadea = Holothuridea, q.v. 



Holothuroidea, (hol-6-tho-roid'e-a). [Holo- 

 thutia, q,v.; Gk. eidos, form.] Holothuriadaa 

 =Sea-slug8, &c.: the most highly organised 

 division of Echinodermata; with vermiform 

 bodies. 



Holothuridas, (hol-o-th3'ri-dS). [Holothuria, 

 q.v.; Gk. eidos, form.] = Sea cucumbers: have 

 soft and leathery vermiform bodies; with 

 suckers, but no spines; are intermediate be- 

 tween the globular echinus and anuulose 

 fistularia. 



Holtenia, (hol-te'ni-a). [M. Holten, Faroe 

 Isls.] A vitreoTis sponge, discovered in 1868. 

 H. Carpenteri=Sea-nest : a silicious nest- 

 shaped sponge found at the bottom of N. 

 Atlantic. 



Holtz's electrical machine. For the collection 

 of electricity on a large scale by means of 

 induction. 



Holy, (ho'li). H. 0ra*s=Hierochloe. 



Homaliacese, (hom-al-i-a'se-e). [Gk. homolnx, 

 regular.]=Homaliads: shrubs and trees, with 

 alternate leaves and small flowers, belonging 

 to Cactalea. 



Homalodontotherium, (hom-a-16-don-to-the"- 

 ri-um). [Gk. homalos, regular; odous, tooth; 

 tkerion, beast.] H. Cunninghami: a mam- 

 malian animal, known only by fossil remains 

 (teeth and fragments of bone), found in 

 Patagonia; connects Perissodactyles with 

 Nesodon. 



Homalonotus, (hom-a-lo-no'tus). [Gk. homalos, 

 regular; notes, back.] A trilobite, found in 

 Silurian and Devonian rocks: having the 

 division into three lobes very slightly marked, 



Homaloptera, (hom-a-lop'ter-a). [Gk. homalos, 

 regular; pteron, wing.] A name suggested 

 for Thoracooephala. , 



Homarus, (ho'ma-rus). [The Latin name.]= 

 Lobster: a crustacean .animal. *. 



Homberg's phosphorus. Chloride of calcium. ; 



Hominidse, (ho-min'i-de). [Homo, q.v.; GK. 

 eidos, form.] A family of Anthropoidea of 

 which Homo (=Man) is the only genus. 



Homo, (ho'mo). [Gk. homos, like.] * A prefix 

 implying likeness or equality. 



Homo, (ho'mo). [The Latin name.j=Man= 

 Human beings: diurnal animals, belonging 

 to Primates, erect, with naked body; a family 

 of Mammalia having but one genus and one 

 species. H. sapiens=y?hite men. - //. Afer 

 =Dark. 



Homo diluvii testis, (ho'mo di-iu'vi-I tes'tis). 



[Latin.] The name given to the fossil skele- 

 ton of a large salamander found in Miocene 

 rocks, on the supposition that it was a human 

 skeleton. 



Homocercal, (ho-mo-serTcal). [Gk. homos, 

 equal; kerkos, tail.] Equally lobed fish-tails, 



Homocercal tall. 



rare in fossil fishes of primary strata, almost 

 universal now. cf. Heterocercal. 



Homocercy, (ho-mo-ser'si). [Homocercal, q.v.] 

 Equality in the lobes of the tail: used especi- 

 ally of fishes, cf. Heterocercy. 



Homoeopathy, (hom-e-op'a-thi). [Gk. homoios, 

 similar; pathos, feeling.] The system of 

 medical treatment which is based on the 

 theory that is opposed to Allopathy, v. Medi- 

 cal Science. 



Homogangliata, ( ho-mo-gang-li-a'ta ). [Gk. 

 homos, similar; ganglion, nervous centre.]= 

 Articulata of Cuvier = Annulosa : animals 

 composed of a succession of rings or somites 

 formed by the outer integument, and having 

 symmetrically arranged ganglionic centres: 

 includes Crustacea, insects, worms, &c. 



Homogeneous, (ho-mo-je'ue-us). [Gk. homos, 

 like; genos, kind.] Of one kind only. //. 

 light: light of one colour only, as red, yellow, 

 bine, &c. 



Homogenesis, (ho-mS-jen'e-sis). [Gk. homos, 

 like; gennao, I produce. ]=Gamogenesis: re- 

 production in which parent and offspring ara 

 alike, v. Genesis. Each germ produces but 

 one individual; always uniaxial; Tiniversal 

 with vertebrata; in plants the exception. 



Homogenetic, (ho-mo-je-net'ik). [Homogene- 

 sis, q.v.] Connected with, or relating to, 

 Homogenesis. 



Homogenies, (h5-mo-jen'i-Sz). [Gk. homos, 

 like; genos, kind.) Suggested as in somo 

 cases preferable to Homologies. 



Homogens, (ho'mo-jenz). [Gk. homos, like; 

 genos, kind.] 1. Suggested by Lindley for 

 birth -worts, nepenths, &c., which have only 

 one zone of wood, however old. 2. Used by 

 Lindley as=:Exogens. 



Hpmoiozoio belt, (h5-moi-o-zo'ik). [Hommos, 

 like; zoc, life.] Used by Forbes to express a 



* beltof similar climate, which extends through 

 many degrees of longitude bat few of latitude. 



Homological, (ho-mo-loj'i-kal). [Homology, 



I q.v.] Following the organ, not its function, 

 through all its modification in different or- 

 ganic structures. 



Homologous, (ho-moro-gus). [Homology, q. v .] 

 Having the same name. v. Homology. 

 Homologues, (ho'mp-logz). [Homology, q. v.] 

 Parts or organs in one organic structure 

 I answering to others in another structure, so 

 i that the same name may be applied to both: 

 ' applied to the same parts or organs under 

 every variety of function. 



