i 

 f 



20& 



eactcris in STnonima ftHatis praeponendnm arbifrftTi, vice 



". . ' ' 



enim inter hoc itlndqae Biddulphia^ antiquitatis causa, cir- 



cnmscripta, innoratioms snperracaueae faorror persuasit 



postremnin ad species plares Diatomearam desiguandas adhi- 



bitam a Desmidieia expnng^ere primumque a Biatomeis jam 



cxclnseni in meditim afferre* 



1. Tsthmia vesiculosa Ag,, ceUnlis eiliplieid, transverse 

 crebre striatis, isthmo unico conjanctis; iuteraileis flaccl- 

 dis. ~ Ag, CoQsp. Diatom, p. 55. (1832).,— Diatoma? 

 Tesicnlosam ^g^ Syst, p. 7. n, 16, — Biddnlpbia resi- 

 cBlosa Ktz, Sjnops. Diatom, p. 82. 



2. latitrita vertehrata -^, cellolis e latere ellipticis, trans- 

 rersim dimidiatis, bilobis, e dorso oblongis, media de- 

 pressis, isthmo nnico conjonetis; interaneis orato-lanceo- 

 latis ad extremitates in laminas binas inflexas parlitia. -^ 

 Desmidium vertebratom Br4h, ! 1. c. p. 65. PK 11, (1835). 



(Y. T.) 



3. Isthmta filiformis — , cellnlis elliptiois, tranarersim di- 

 midiatis, bilobis, isthmo dnplici conjancfis; interaneis (gra- 

 nnlosis?). — Odontella? filiformia KAr. Infosor. p. 154. 

 n. 180. (1838). — Tesaarthra filiformis Ehr. 1, c. T. X. 

 f. XXI. 



4. Isthmial stomatomorpha — , cellolis e dorso elliptivis, 

 e latere linearibnsj.lunnlatis, conrergentibos , apicibna si- 

 mnl conjonetis. ^— Achnanthes stomatomorpha Tmrp, Diet. 



, des sc. nat. par Lerr. Atl. Veg. tcs. f. U, (1820), Mim, 

 da Mua. T. XV!. p. 295 sq. PI. XUI. f. 10. — Scenedcs- 

 mns stomatomorphus Kt»^ 1. c. p. 80. n«'8, Brib» 1, c. 

 p. 60. D. 1. FJ. Yin. — Odontella stomatomorpha? Ehr, 



iDfnsor. p. 152. 



Species iiiquirendae, 



*..? Sphaerodesmus bicobr Corda I. c. p. 126. PI. VI. f.85., 

 6. ? Sphaerodesmns depresgns id. f. 86. 87. 



