GLENOSPORA. 



[ 358 ] 



GLCEOCOCCUS. 



conical, colourless, the turgid front and the 

 narruwed foot truncated ; eyes blackish ; 

 length 1-57U" ; IVeshwater. 



BiBL. Ehreub. Inftis. p. 391. 



GLEN0S'P01?A, Berk. & Desm.— A 

 genus of Uematiei (?) (Hyphomycetous 

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

 appears to have been fou)id in Britain. 



Blbl. Berk. Hort. Journ. iv. p. 2o(J. 



GLOBIGERI'NA, D'Orb. — A typical 

 Foraniiuifer. The shell is minute and glo- 

 bose, consisting of a series of ten or fewer 

 globular chambers, arranged spirally in two 

 or tlnee whoils, and increasing rapidly from 

 l-iiOOO 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- 

 taeca and G. hirsuta the shell is almost dis- 

 coidal and nautiloid ; in G. hulloides (PL 24. 

 iigs. 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 Orhulina. 



G. buUoides 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. Wallich, Biolog. Glohiy. 1876; Car- 

 penter, For. l8l ; Parker and Jcnes, Phil. 

 Tr. IBGo, 36o ; Bradv, Mic. Jn. 1879, 70. 



GLOBULIN A, Turp. = GL(EOCAPSA. 



GLOBULI'NA, DOrb. See Polymor- 



PHINA. 



GLCEOCAP'SA, Kiitz.— A genus of Pal- 

 mellacea3 (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 

 Cvccoc/ihins the chief distinction seems to 

 be in the persistence of the lamellte of the 

 parent cells in the membranous condition, 

 and the globular instead of cylindrical or 

 ellipticnl form of the cells, while the habit 

 is to form rather fiat irregular strata tlian 

 globose or papillose masses. From Proto- 

 cocvus 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. conjluens. Stratum gelatinous, green. 

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

 lite mat Qcocciis minutissimus, Hassall ? 



G. montana. Stratum gelatinous, green ; 

 vesicles concentrically striated; cell-contents 

 1-1000 to 1-500'" in diam. = if. microsjiurus, 

 Hass. 



G. (jranosa. Stratum green, firm ; vesi- 

 cles concentrically striated ; cell-contents 

 1-300'" in diam. = 7/^. c/trmosus, Hass. 



G. j)ol)jdcrmatica (PI. 7. fig. 4 ). Stratum 

 hardish, olivaceous, somewhat compact or 

 granular ; concentric lamellse evident, 

 thick ; cell-contents 1-800 to l-oOO'" in 

 diam. = ^. rnpestris, Hass. 



G. (TTuginosa. Stratum grey-feruginous, 

 granular-crustaceous ; vesicles large (1-100 

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

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



G. lividia. Stratum dirty olive or black- 

 ish, soft, but tubercular ; ceU-contents seru- 

 ginous ; 1-700'". H. lividits, iiaas. 



G. Mac/ma. Stratum purplish-blaclc, 

 criistaceous, granular; cell-contents 1-600 

 to 1-320'". tSorosjiora montana, Hass. 



G. sanc/iiinca. Stratum black ; internal 

 cells deep blood-red ; ceU-contents 1-000 to 

 1-400'". = Ilcematococcus sanyuineus, Ag., 

 Hass. 



G. Shuttleu'ort/iiana. Stratum dirty red ; 

 internal cells orange ; ceU-contents 1-1000 

 to 1-900'". 



G. Balfsiana. Stratum dirty purple ; 

 internal cells rosy-purple ; cell-contents 

 l-7oO to 1-^00'" . = Surospora Palfsii, Hass. 



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

 have met with among freshwater Algas, 

 which appears to agree with Kiitzing's 

 G. ampla. 



Those resting forms of Euylena where the 

 encj'sted groups are devoid of a firm outer 

 coat, bear considerable resemblance to a 

 large Gloeocapsa. 



Babenhorst describes 55 European species. 



BiBL. Kiitzing, Pht/c. (/en. 173, Sp. Alt). 

 216, 7rti. Phyc. pis. VSetseq.; Hassall, ^/y,^<^, 

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

 Braun, Bejuv. (Bay Soc. 1853), 131, 182; 

 Rabenhorst, Fl. Ak/. ii. 34. 



GLQ^OCOC'CUS, Braun.— A genus of 

 Palmellaceoe, consisting of active liiciliated 

 gonidia resembling the moving form of 

 Protococcus, but connected into families by 

 a mass of soft jelly. See Palmellace^b. 



BiBL,. A. Jkaun, 7Vr/yV«//i<?;/7, 169: CJiy- 

 tridien, 57; Rabenhorst, Fl. Aly. iii, 36 (fig). 



v 



