GLENOSPORA. 



[ 358 ] 



GLCEOCOCCUS. 



conical, colourless, the turgid front and the 

 narrowed foot truncated ; eyes blackish ; 

 length 1-576" j freshwater. 



BIBL. Ehrenb. In/us, p. 391. 



GLENOS'PORA, Berk. & Desm. A 

 genus of Dematiei (?) (Hyphomycetous 

 Fungi), of which one species (G. Thwaitesii) 

 appears to have been found in Britain. 



BIBL. Berk. Hort. Journ. iv. p. 256. 



GLOBIGERI'NA, D'Orb. A typical 

 Foraminifer. The shell is minute and glo- 

 bose, consisting of a series of ten or fewer 

 globular chambers, arranged spirally in two 

 or three whorls, and increasing rapidly from 

 1-2000 to 1-80" in diameter. Surface 

 foraminated and rugose, sometimes prickly. 

 Each chamber opens into the umbilical 

 hollow by a crescentic orifice. In G. cre- 

 tacea and G. hirsuta the shell is almost dis- 

 coidal and nautiloid ; in G. buUoides (PI. 24. 

 tigs. 2, 3) the chambers become heaped ; in 

 G. helicina the later chambers expand and 

 grow irregular. In some cases the last 

 chamber overlaps all the others, and the 

 shell becomes an Orbulina. 



G. bulloides is very abundant in the 

 Atlantic and other oceans, also in the 

 shallow water of the Adriatic. Many 

 varieties occur, recent and fossil, from the 

 Triassic period to the present day. 



BIBL. Waffich,J?wfoy. /o%.1876; Car- 

 penter, For. 181 ; Parker and Jones, Phil. 

 Tr. 1865, 365 ; Brady, Mic. Jn. 1879, 70. 



GLOBULI'NA, Turp.=GLCEOCAPSA. 



GLOBULI'NA, D'Orb. See POLYMOR- 



PHINA. 



GLCEOCAP'SA, Kiitz. A genus of Pal- 

 mellaceae (Confervoid Algae), distinguished 

 by the rounded cells, single or grouped into 

 families, with special and general lamellar 

 envelopes. As we have adopted it, it is 

 distinguished from Palmella by the persis- 

 tence of the coats of the parent-cells as 

 envelopes enclosing their progeny of several 

 generations, to the number of 4, 16, 64, or 

 more secondary cells, the membranes becom- 

 ing confluent subsequently, however, by 

 solution, into a gelatinous mass. From 

 Coccochloris the chief distinction seems to 

 be in the persistence of the lamellae of the 

 parent cells in the membranous condition, 

 and the globular instead of cylindrical or 

 elliptical form of the cells, while the habit 

 is to form rather flat irregular strata than 

 .globose or papillose masses. From Proto- 

 coccus it is distinguished by the persistent 

 gelatinous investment. Some recent writers, 

 ' especially Sachs, assume that the species of 



Gloeocapsa are . early stages of development 

 of Lichens, from gonidia. 



G. con/tuens. Stratum gelatinous, green. 

 Diam. of cell-contents, 1-1200 to 1-600'".= 

 H&matococcus minutissimus, Hassall ? 



G. montana. Stratum gelatinous, green ; 

 vesicles concentrically striated; cell-contents 

 1-1000 to 1-500'" in diain. = .f. nUcrosponu t 

 Hass. 



G. granosa. Stratum green, firm ; vesi- 

 cles concentrically striated ; cell-contents 

 1-300'" in diam. = //. granosus, Hass. 



G. polydennatica (PI. 7 . fig. 4) . Stratum 

 hardish, olivaceous, somewhat compact or 

 granular ; concentric lamellae evident, 

 thick ; cell-contents 1-800 to 1-500'" in 

 diaui. = J ST. rupestris, Hass. 



G. eeruginosa. Stratum grey-aeruginous, 

 granular-crustaceous ; vesicleslarge (1-100 

 to 1-60'"), irregular; cell-contents 1-1000 

 to 1-600'". =//. ceruyinosus, Hass. 



G. lividia. Stratum dirty olive or black- 

 ish, soft, but tubercular ; cell-contents aeru- 

 ginous; 1-700'". If. lividus, Has*. 



G. Magma. Stratum purplish -black, 

 crustaceous, granular; cell-contents 1-600 

 to 1-320'". ISorospora mantana, Hass. 



G. sanguinea. Stratum black ; internal 

 cells deep blood-red ; cell-contents 1-600 to 

 1-400'". = Hcematococcus sanguineus, Ag., 

 Hass. 



G. Shuttleivorthiana. Stratum dirty red ; 

 internal cells orange ; cell-contents 1-1000 

 to 1-900'". 



G. Ralfsiana. Stratum dirty purple; 

 internal cells rosy-purple ; cell-contents 

 1-750 to 1-400'". S /Storapora Ralfsii, Hass. 



In PI. 7. fig. 13 is represented a form we 

 have met with among freshwater Algae, 

 which appears to agree with Kutxing's 

 G. ampla. 



Those resting forms of Euglena where the 

 encysted groups are devoid of a firm outer 

 coat, bear considerable resemblance to a 

 large Glceocapsa. 



Rabenhorst describes 55 European species. 



BIBL. Kiitzingr, Phyc. gen. 173, Sp. Alg. 

 216, Tab. Phyc. pis. 19 et seq.; Hassall, Alyee, 

 pi. 79, &c. ; Sachs, Bot. Zeit. xiii. 1 ; Al. 

 Braun, Rejuv. (Ray Soc. 1853), 131, 182; 

 Rabenhorst, Fl. Alg. ii. 34. 



GLCEOCOC'CUS, Braun. A genus of 

 Palmellaceae, consisting of active biciliated 

 gonidia resembling the moving form of 

 Protococcus, but connected into families by 

 a mass of soft jelly. See PALMELLACE.E. 



BIBL. A. Braun, Verjiingung, 169 : Chy- 

 tridien, 57; Rabenhorst, FL Alg. iii. 36 (fig). 



