Confervoide;ie, Ulvace?o, Physodictyoa. 149 



1. Pringshelmia scutata Reinke loc. cit. 



Ilab. ad caules Pol y s iphoniar u m in sinu Kielensi raaris 3r)9 

 baltici. — (( Videtur cum Ulxella Lenle Crouan comparanda)). 



DERMATOPHYTOi^ Peter [1886] Ueber eine auf Tiiieren schmaro- 

 tzende Alge in 53. Versamml. deutsch. Naturf. und Aerzter 21 

 Sept. 1886, Botanisches Centralblatt XXVIII. Band, 1886, p. 125 

 (Etym. derma cutis et phyton planta), Epiclemmydia Potter 

 [1886] in Proceed. of Cambridge Philos. Soc. vol. VI, part I, 8 No- 

 vemb. 1886, Note on an Alga {Bermaiopliyton radicans Peter) 

 growing on the European Tortoise in Linn. Soc. Journ. Bot. vol. 

 XXIV, p. 251, pl. 8. — Thallus in testudinis clypeo vigens, aqua- 

 ticus, explanatus, rotundatus, subirregularis, obscure viridis, vix 

 1 cm. diam. a^quans, e cellulis dense confertis, majusculis, ut plu- 

 rimum subquadraticis constitutus; cellulae uijae (aquse expositae) in 

 paucos stratos dispositae, altera} massas cuneiformes in clypeum 

 penetrantes efficientes. 



Propagatio zoogonidiis e plasniatis repetita divisione cellularum 

 strati exterioris ampulliformium ortis, piriformibus, numerosis, 

 conformibus, post longum raotum demum germinantibus. 



Generatio adhuc non observata. 



1. Dermatophyton radicans Peter 1. c, Potter On an Alga growing 'mo 

 on tiie European Tortoise p. 251, t. VIII, Epiclemmydia lusita- 

 nica Potter in Proceed. of Cambridge Phil. Soc. vol. VI, pt. 1, 

 Ulva involvens Savi (1864) in T. Salvadori Catal. uccelli di Sar- 

 degna p. 118-119? — Characteres iidem ac generis. 



Ilab. ad dorsum clypeorum Emydis europaia3, Clemmy- 

 dis caspica) etc. in regionibus Europse imprimis australiori- 

 bus. — Ex speciminum authentic. Ulva? involvenlis (Savi) bene- 

 vole a cl. prof. Thom. Salvadori mihi missorum at nimis obsole- 

 torum observatione, dubium manet utrum h;T3c Ulvoi species (ad 

 plumas Phalacrocoracis ox avium familia vigens) identica sit cum 

 Dermatophyto radicante Peter. Si hoc foret, nomen a cl. Peter da- 

 tum, in Dermatophyton inoolvens (Savi) mihi prioritatis lege es- 

 set mutandum. 



Genera incertissimae sedis. 



?PHYSODICTYON Kuetz. [1819] Sp. p. 482 (Etym. physis vesica el 

 dictifon retis), Ral)(^nh. Fl. Eur. Algar. III, p. 312, Ilydrodictyi i^\\. 



