GLANDULINA. 



[ 



GLEXOPIIORA. 



(ci/stoh'flis of "VVeddpll) are also related to 

 glands. (See Raphidf.s.) 



Bennett draws attention to certain glands, 

 imbedded in the leaves of Droseiut, I'inyui- 

 ciila, and Callifriche, at first sight resem- 

 bling stomata, with two papilla?. They are 

 supposed to be related to a carnivorous func- 

 tion. Similar structures seem to exist in 

 leaves of the garden rhubarb (PI. 2. fig. 14). 

 BiBL. Meyen, Secretionsorg. d. Pflanzen. 

 Berlin, 1837 ; Brongniart, Ann. Sc. Nat. 

 4 st5r. ii. 5 ; Lawson, A7m. N, H. 2 ser. xiv. 

 IGl ; Trecul, Ann. Sc. Nat. 4 s(?r. iii. 303 ; 

 Ann. N. H. 2 ser. xvi. 146 : Tieghem, Ann. 

 Sc. Nat. 1872 ; Sachs, But. 92 ; Bennett, M. 

 M. Jn. 1870, XV. 1. 



GI.ANDULI'XA, D'Orb.— A Nodosa- 

 rian Foraminifer. It has a free, regular, 

 straight, ovoidal shell ; globular, almost com- 

 pletely embracing chambers, the last being 

 convex and prolonged ; and a round, minute, 

 terminal orifice. 



G. IcBviyata (PI. 23. fig. 28). Eecent and 

 fossil. Common in the Lias and Chalk. 



BiBL. D'Orbigny, For. Foss. Vien. 28; 

 Morris, Br. Foss. 36; Parker and Jones, 

 Ann. N. H. 2 ser. xix. 280. 



GLAUCO'MA, Ehr.— A genus of Infu- 

 soria, of the family Trachelina, E. 



C/iar. Body ciliated all over; mouth 

 longitudinal, oval, without teeth, placed 

 laterally near the anterior third or fourth 

 of the body, and furnished with one or two 

 tremulous laminiB or lips. 



Stein describes the encysting process as 

 occurring in one species. 



G. scintiUans, E. (PI. 31. fig. 8). Body 

 colom'less, slightly depressed, elliptical or 

 ovate ; sacculi large; length 1-290". Fresh- 

 water, and in infusions (of hay, &c.). 



G. viridis, D. Body gi-een, oval ; mouth 

 large, nearer the middle than the anterior 

 end of the body; length 1-630". In pu- 

 trid rain-water collected in an empty wine- 

 cask coated with cream of tartar. 



BiBL. Ehrenb. Infus. 334 ; Dujardin, 

 Infiis. 475 ; Stein, Infus. 250. 



GLEICHENIA'CE^. — An order of 

 Ferns, distinguished by the soriof few (2-10) 

 obliquely annulated sporangia, -which open 

 vertically (fig. 2^2). Genera : 



Gleichenia. Sporangia collected in round- 

 ish sori. Indusium absent. Leaves forking. 

 Exotic (figs. 281 & 282). 



Platyzoma. Sporanges collected in point- 

 like sori. Indusium spurious, formed by the 

 revolute margin of the leaf. Leaves undi- 

 vided. 



Fig. 281. 



Fig. 282. 



Gleichenia. 



Fig. 281. Fertile pinnules with sori. Magn. 5 diams. 



Fig. 282. Sorus composed of four crucially arranged 



capsules. Maga. 40 diams. 



GLEXODIN'IUM, Ehr.— A genus of 

 Infusoria, of the family Peridinfea. 



Char. Carapace membranous, rounded 

 or oblong, with one or more distinct furrows 

 furnished with vibratile cilia ; an elongated 

 or horse-shoe-shaped red (eye-) spot pre- 

 sent ; no horn-like processes. 



These organisms are doubtful Infusoria. 

 They are common in pools and bog-water. 



&'. cinctum (PI. 31. fig. 10 a, b). Ovate 

 or subglobose, ends obtuse, yellow; cara- 

 pace smooth ; eye-spot large, transverse and 

 semilunar ; length 1-576", 



G. apicidatum (PI. 31. fig. 10 c). Oval, 

 ends obtuse, greenish yellow ; carapace 

 smooth ; eye-spot oblong ; length 1-480". 



G. tabulatum. Oval, greenish yellow ; 

 carapace granular, reticulated with promi- 

 nent lines ; ends acute or denticulate ; eye- 

 spot oblong; length 1-480".. 



BiBL. Ehrenberg, Inf. 257; Dujardin, 

 Inf. 373 ; Kent, Inf 446. 



"GLENOM'ORUM, Ehr.— The Glenomo- 

 )'um ttngens of Ehrenberg (PI. 31. fig. 14), 

 which consists of aggregated revolving 

 groups of green bodies, with two anterior 

 cilia, and a red (eye-) spot, has been shown 

 by Weise and Stein to form the young state 

 of Chlorogonium, which itself appears 

 probably to be a stage of development of 

 Pbotococcus. 



GLENOPITORA, Ehr.— A genus of 

 Rotatoria, of the family Ichthydina. 



Char. Free ; eyes two, frontal ; rotatory 

 organ circular and frontal ; tail truncated, 

 without toes, 



G. trochus (PI. 43, fig. 36). Body ovato- 



