— lo'ir — 



(in .hiliiTsIicllc X'iTi'iii liir \;ilcil. X.Éliiik. m Wiirll. Hf'f, \i. ■''>'|7 <■• fiir.i, wliich |i:is ;i 

 li'iit;lli ni' 1),')--^,') i;. iiiiil ;i liii'.nllli (il "i-li ;/. ; iiiiil C. liiiTiiir var. hiirliKiIrnsi- i',. S, \\ km 

 (in .louni. |{ol. XMI, i()(i'i, y. -Xll, |. /|(i',, f. 17) willi ;i I(MI;,'|Ii iiC 7,.'i-7,7 \i- ■'iikI ii l>l<Mr)(|i 

 "I '] J\-'^ {'■■ NN illi nrilhi-j' ni ilicc linv luniis (mii iIh- pfcsiMil viiriclv lie cuiiCiisi'il. 



■(!')(). Cosniariuni siihcoslaliini Nminsi. l'niniM. 



I''i)inia si'inici'lliilis iillis ul in \ai l'cckii snl ^rannlis i-iMilialilins ni iti l'ocnia iiitiinrf. 

 Ldli;;-. :'.;') (;. ; lai. ■■S ;;. ; lai. isIJun. () ;/.. 



I aiiidinaniai'ca : n" ■>•. . 



■>J\n. Cosmarium subtile 1 \\ . ami <i. S. Wi/^i l.iiiMM. in N'crliiindl. (1er k. k. zonl.- 

 Iiiilan. (les, W'icn, i(|in, p. I\\)\ l'ciiiniii siihlih' W . and 'i. S \\ 1 sT in .liiiirii. U(»_v. 



Mici-. Sue. I,S()7, p. /17,,, I. (1, li- S. ,, : Mnnn:;!'. j'.lil. jlrMll. I. Il,.l',. p. (,-.., I. 8, 



r. •.,7-:...,. 



h'(irni;t incniltcanii ccllnlainni riMssiiirr. 



\.tm'^. tS [j.; lai. 11,.") m. ; lai. isllini. ir y. iPI. \.\ll, li-. .âi). 



( aiiuiinainaica : n" '/i . 



•,>.'li. Cosmarium subtilissimum spec. nov. 



(;. niinininni, (Iclicatissiinnrn, ihipld liniL;ins i|n ini laliiin, Icvissime coiislrirlum, siriii 

 vix coiisiiicno ; scinicellnla' scnii-oMnti^a', lah'iiliiis siili|iatiillelis (levissimc sursiim diver- 

 gi'iililms), aj)ice lalo rolunilalis ; a vcilicr visa' lircnlai es ; incml)ranri Icniiissima cl fflahra; 

 chromalopliora sin!i;iiia in crllnla nnaipiaipa- ciini p\ rciioide siiiffulu. 



Lomï;. if)-!."»,,") [j. ; lai. 7,r)-8 [j.\ lai. islliin. (),;i-G,7 j;. ; crass. 7,3-8 jy. ( 1*1. XXII. (\<^.l\h). 



Antinr/m'd : Boi;- ncai' llic Laj;iina alinvo McdcHin, (".(Milral Andes; allil. ■j>''>an m. N" 5. 



Tliis species slioidd hr i'(ini|i:iri'il willi f.'. pi'f//iiini/i//n nob. {=^ Ci/tinf/roci/sti.t niinu- 

 lixftuiKi TrnNER), IVoni w liirli il dill'crs in ils nidir rslindtical ceiis, in wliich (lie scinirclls 

 are sliglilly wider al llie apex Ihaii lin- hase, and in Ihe single cliloroplasl (witli oiie cen- 

 tral pyrenoid) in each cell. The rell-wall is also much more délicate. 



■il\-i. Cosmarium subtriordinatum W. and Ci. S. West. — Anli()f|uia : n"' i and 2. 



•.i/|3. Cosmarium subtumidum Nordst. — .VnTKxpiia : 11"' ,") and (>. f'.nndinaniarca : 

 n"* i/| and -i'?,. 



•i/|'|. Cosmarium finctum Hai.ks. — ( !ntidinaniarra : ii'^ a'|. 



■.>.!\'k Cosmarium trachypolum W. aiul (i. S. \\ i:st. — .Vnlin.piia : n"" i, ■>, ."i and 4. 



•}.l\iS. Cosmarium venustum (lînÉB.) .\iu:n. \ lu. hypohexagonum W . W i:st. — Aiiiio- 

 (piia : n" ,">. 



■il\-. Xantliidium armatuui 1 Tutiiii. 1 U.MtKMi. — Anlioipiia: n" .'1 (abnndani 1. 



248. Xantliidium Mayori spec. nov. 



X. nu\liiRT(\ circiler i' -,-|)lo Idimins i]n;nn lalnin (sine spinis), profunde ciinslriclinn, 

 sinii liîieaii exlrorsuni amplialo ; sentiocllnla' Iransverse oblongo-hexajona', lalerihus 

 inlVrioiiluis el supcriorilms leviter cnnvoxis, apice recto, ans^iilis laleralihns et apicalibus 

 spinis snhulalis loviler ciirvalis liinis iiislrnclis, eliain spinis similibus in niedio marçinum 

 ialeraiiuni sn|>erioi uni et in nicdin apicis ; in ccnlro semiceilularuni \errucis binis Irans- 



