i„i iHthini II 



Ri i'--' " ' 'ontrib. p, 86, tab. 16, 



I i... u lii. Ii i- tim. I. 

 !'"'• - Il ntljrht, Im.u.x. i. to I" 

 NORD P. tt, 



..... 



id i " i bm 



il 



17 R raafMal Desm p. 226; Rai.pj Brit. Deain. tah 21 



t. Un iricuapidata Bnsn Vig. Ful. p. 57, lab. 8. 



ni. 18 i/; long. arul 'i 1 .' «. 



. l ). 



|s. s ronuatiim iX BlRRRI fl -|""' rl itu 'i ni (MaRK,) milii: St clepaydra 



Mari \ /. Peam. Vdd. p. 245, tab. 25, ii-. 12, non Nordht. Desro. Braa. 

 : ; i- S Bpenceriannm Mark. in i.ni. Tab. noRtr. I, fig. 18- 



!l </ aoul 30 ": lat. sin. aoul. 34 l" ". long. acul. 8 

 lut. iathtn. 8 M Di un. t) gropor i 15 u. 

 Omatang 



I ,_'i.. with Meaa; - l.""Y and Birrei (Jap. I)eam. p. 237) in considering St. cow 



• i M nnsi n 1 1, -in. Danem. tab. 8, ti.-. 23 < I ■ ►» •-- 

 •■■ tlii- »| ctum VVoli.i Dt'Rm. I nit. Stat. tab. 10, fig. 18 — 19 



tian lik. :. - 



Thf breadth "I the iathraua BeeniR inuch t" vary, to judgc Prom the figures in Ma- 

 hrbll I. 18 8 f* ling i" lin- toxl "ii pag. 245: IG 17 ft). I have nu i with 



ti t«. the zygo8|>ore. — The spines of the Bpecimena, I have Been, were 

 thai ■ Maskem/s fig. I. <■. 



Kirchn. Schles. Alg. p. 169, agreea | »r< -t t \ well with tnj 

 form, l>nt i- Rotncwhal largcr, it- enda n little eonvex, hul the apines eoaraer ;m<l longer. 



Roi el Bi8R. I. c. -'•'■in-- i., me nearly identical with 

 fornt, l>nt the spinea an Boinewhat longer. 



romhined under the general narai of St. dejectum Brér., but 



the right plarc for th"-' forms, in which ii" zygoapores are mel with, i- alwaya doubtfuL 



Therc i- -till much dou ning tli« importance whether »the segmenta are connected 



withont u band or by a verv shorl oi - natum Ralps ex parte, Brrb. I must 



- i distincl apecies. Fig. 5 / and 'i m in Ralps Brit Deam. t:il>. 20 do 



mit beloi tum, l»ut ; - tfum. On the othcr hand the zygospore <>\ 



l,'i in-i ii Contrib. tab. 15, ii'.'. 8 belongs t.. St. dejectum <n<>t to fig. 



Ralps - - _ stod !>\ Rrinrch pag. 86). Aceording to Brérirron'8 deacrip- 



