Mlle, — 



Family T^ivutariacex. 



'.\\\. C;ilotlirix parietina iN.iw;.) Tiii iii;r. - ( Miniliiiaiiiiiii:i : n"" l'i, 17 aii<l M). 



(lliiss. lil. I f)- 1 .S (iisi|ii(' ad ■>.!\)ii.\ cr'ass. Ififli. \)-\y. [>■■ 



'M\. Calotlirix hrevissiiiia (i. S. Wisi in .Imiin, l.inti. Suc lîol. XXWIII, Hjoy, 

 |). iS,,, I. 10, f. 8. 



l-'oniia liii-liuinaliliiis |iaiillii laliuiiliiis ; <Tass. lil. d-K,.") a ; crass. trifli. 'i,.')-^,^ u. ; 

 Ion-, loi. Iiirli. :;(i-V'. ;/.. (l'I. \\l, li-. S-,|). 



I !iiii(iiiiaiiiai'iM : w" l 'i . 



?>-j. Calotlirix columbiana sp. nov. 



(".. |iar\a, liiis grc^jar'iis, ail piaulas \arias siilniicisas afiixis, iisi|iir .'{."io y. loiii^'is, 

 siihrcctis vol Icvilcr fle.xiio.si.s, ail liasiii sa'|n- iliTiiinlii-iilihns, ajiiccni versus i(ra<lalirri altr- 

 niiutis ; vayiiia arcta arliroa (U siihmucnsa, nuii l.niirllosa ; (rif;lir)matil>iis (lalliilf- icnit^i- 

 neis, iiilei' i-i-lliilas non conslriclis ; cclliilis liasiii vimsiis siil)f|iia(lralis vcl diamclro [laiilln 

 onj.iioril)us, rclliilis afiicL'in vcM-stis siilicyliii'lrii'is, iliaineiro circiler .'5plij l(in;;ii)ril)iis ; 

 licicroi-vslis snlilai'iis, liasilariliiis l'I siiiispliaTicis ; sporis solilariis cilipsoidcis, piilo jn.\la 

 i-i'lliilas \c:.;i'lalivas siilil iiiiiralu ri inciassalo, t.'[)isporio giabro cl achroo. 



Caass. liirh. ail lias. (i-S y., ail med. circilcr 4-ij \>- \ diarii. helerocysl. 6 a, loin,', spor. 

 12-1/1,5 [X ; lai. .spor. 10 \j.. (IM. \.\I, fig. 10-1-2). 



(Uiinliiuunnrca : Laçfuna de Uliaque, Eastern .Vmlos ; allii. aoGfi m. .N° u3. 



Tliis spccios is a close allv ol" '■--'. stafjiuilis Go.mont (in .loiirn. de [inlani(|uc, i8g5. 

 p. iq", (Mini li!„'.\ liiit ilitlVrs in ils sliorlcr Hlanicnls, ils solilary heterorvsts, ils cvlin- 

 ilrii-al (('Ils witli riilii-e absence of iiilercellnlar conslriclions, and in ils sliorler and dilfc- 

 rendy slia|)ed spores. 



38. Calothrix sp. ad C staçfnnlcin accedens. 



Crass. Iricli. ad bas. 6,8-8 \x ; diam. lieleroryst. 6,0-7 a. '-undinaniarca : n» i4. 



Very liule of this specics was seen. Il is epipliylic on varions aquatic macrophyles. 

 Froiii (1. sttiijna/is il dilVers in ils solilary lielerocysts and (in tlie few spécimens ohser- 

 ved) in tlie aliseiice of spores. 



3i). Calothrix clavata sp. nov. 



C. iiiinnla, tilis solilariis vel sul)çroy;ariis. ad plantas submcrsas epiplivlicis, usqiie 

 100 jA lonj;is, sulirectis vel leviter Hexuosis, ad basin iiitlalis, snpra l.asin subiler atleniia- 

 lis et deinde gTadaliiu atlenuatis apicem versus ; vagina arda, achroa cl teiuiissima ; 

 Iriclionuililnis pallide an-iinineis, inler cellnlas latiores hasales Icviler conslriclis ; cellulis 

 ad basin bievibus el discoideis, in parle superiori cylindricis cum diamelro 2-3 plo lonffio- 

 ribus ; lielerocyslis solilariis, basiiaribiis el liemispliaM-icis. 



Crass. fil. ad bas. 7 u. ; crass. Iricli. ad bas. ô .ô.ô u. ; crass. trich. ad med. 2,5 il. 

 (P\. .XXI, ti-. 6-7V 



