COLEOSrORIUM. 



[ 192 ] 



COLLEMA. 



cell-contents, so as to form a flat cusliion- 

 like body (clinode or stroma). From this 

 arise vertical or radiating, branched, club- 

 shaped, sac-like prolongations of some of 

 the filaments : the oldest are found in the 

 centre, the youngest at the circumference 

 of the group. The club-shaped bodies, 

 filled -with yellow or brown contents, be- 

 come firmlj'^ coherent laterally (at this stage 

 they constitute Uredo tremellosd). This 

 first spore is formed near the summit of the 

 clavate sac, leaving a little clear space at 

 the tip ; then a second spore below the first, 

 and so on to a third and a fourth, occa- 

 sionally to a fifth ; these increase in size so 

 as to conceal the existence of the sacs on 

 which they are seated ; only the tips of all 

 the laterally coherent sacs foi-m by their 

 imion a transparent layer, presenting, when 

 seen from above, somewhat the appearance 

 of the cornese of the compound eye of an 

 insect. This lamella is burst open, with 

 the epidermis of the infected plant ; and 

 the spores (now styhspoi-es), which grow 

 into oval and globular forms, become de- 

 tached from one another and lie loose, 

 forming the yellow, red, or brown pulveru- 

 lent spots above alluded to. The spores 

 have a granular cuticle, and their coat is 

 double. The above is the Uredo-foi-m ; be- 

 sides this there is another form of fruit, in 

 which the stalked rows of stylospores are 

 represented by oblong 4-5-locular sacs, each 

 of the chambers of which ultimately emits 

 a long slender tube terminating in a minute 

 reniform ' sporidium ' (Tulasne). British 

 species (we cannot find distinctive cha- 

 racters) : 



C. synantherarmn, Fries. On Colt's-foot, 

 <S:c., common. U. comjyratisor, Schlecht. 

 (in part) ; U. tnssihiffirijs, Pers. 



C. senecionis, Fr. On Groundsel, com- 

 mon. U. senccuinis, Schleclit. 



C. campamdaccai'itm, Lev. On Campa- 

 nulcs. U, campamdcB, Pers. 



C. rhinanthaccannn, Lev. On Euphrasia, 

 &c. U. rhinanthaccarum, De C. 



C. pidsatillarum, Fr. U. ]mlsatillaru7n, 

 Strauss. 



C. pinguis, Lev. On leaves, &c. of roses, 

 common. U. efftisa, Strauss; Grev. Sc. 

 Cnjpt. Fl. t. 10. 



BiBL. Leveille, A^in. Sc. Nat. 3 ser. viii. 

 309; De Barv, lirandpdzc, Berlin, L'^53, 

 24, pi. 2 ; Fries, Summa Vct/et. 512 ; Berk, 

 in Jlook. Br. FL ii. pt. 2. 377-0, .'Vrc. ; 

 Tula-ne, Ann. Sc. Nat. 4 ser. ii. 135, 179; 

 Cooke, Micr. Fungi, 



COLEPI'NA, Ehr.— A famUy of Infu- 

 soria. 



Char. Carapace barrel-shaped, traversed 

 longitudinally or transversely, or both, by 

 furrows, in which are situated minute vibra- 

 tUe cilia; truncate, and either smooth or 

 dentate in front ; posteriorly pointed or ter- 

 minated by from two to five teeth ; fresh 

 and salt water. 



Ehrenberg states that the oral and anal 

 orifices exist at the opposite ends of the 

 body. The gastric sacculi are readily filled 

 with colouring-matter. Motion, that of re- 

 volution upon the longitudinal axis. 



A single genus : C'oleps. 



CO'LEPS, Ehr. — A genus of Infusoria, 

 of the family Colepina. 



Char. Those of the family. 



These animals are very voracious, and 

 feed freely under the microscope upon the 

 portions of the body of crushed Entomo- 

 straca, which attract them as much as sugar 

 attracts flies. 



C. hirtus (PI. 30. fig. 33 a, Ehr. ; fig. 33 i, 

 Duj.) Oval, white, rounded behind, cara- 

 pace tabulate, furrows transverse and longi- 

 tudinal; posterior teeth three ; length 1-570 

 to 1-430". 



^ elo7if/aliis. Cylindrical, elongate, length 

 as in the last. 



C. vir/dis. Ovate, furrows transverse and 

 longitudinal, green, posterior teeth three ; 

 length l-9(i0to 1-570". 



C. ami^hacanfhus. Ovate, carapace di- 

 vided by transverse furrows only, anterior 

 teeth unequal ; posterior teeth three, large; 

 length 1-280". 



C. incarvtis. Oblong, nearly cyhndrical, 

 slightlv curbed, white, posterior teeth five ; 

 length" 1-430". 



C. tmcmatvs, Berlin ; fresh water, 



C. ftisus, Norwav. 



BiBL, Ehr. hif. 317; Duj. Inf. 565; 

 Clapar. & Lachm. Inf. .')G6 ; Kent, Inf. 506. 



COLLA'KIUIM, Liuk.— A genus of Sepe- 

 doniei (Ilyphomycetous Eimgi). Filaments 

 crowded, septate, branched, with the spores 

 agglcjuieratid in little spots upon them. 



C. nigrospennvm, on diied paste ; C. 

 frm-tigernm, on decaying apples. The 

 species should be referred to the Schizo- 

 mycetes. 



COLLE'MA, Ach. — A genus of gelati- 

 nous Lichens. Thallus without cortical 

 laj^er, but consisting of a gelatinous mass 

 of cells, with granular gbnima in monili- 

 form series, and with I^ecanorine reddish 

 apothecia ; spores simple or septate. 40-50 



