— 228 — 



Dendcula^ Fragillaria^ Diatoma . . Cjclotel/a, Pjaidiculu, Po- 

 dosira, Melosira.. Cajnpyiodiscus^SurireUa^ BacilLria^ Sjnedra, 

 d. ]S aviculece n. (Diat. slrialse mono-dislomal. Kzg-j: 

 cellulae navicul.ires^ recUe, curvatae, trapezoid. v. cuneif., so- 

 litar. et mohilcs v. sessiles, slipitatae aut plures gelinue im- 

 mersas v- lubulis gclineis inclusae, qui passim diramificantur 

 V. in frondes polymorphas, quandoque ovuligeras coalescunt; 

 valvae transversim striatae et iufera y. utraque osliolata. Fam. 

 5, gcn. 26, spec 5^7? Kzg.: — Cocconeis.. Aclmanihes., 

 Cjmbosira.. — - Cymlella, Cocconemay Encjoncma.. Sphencl- 

 la^ Gomphonema.. Navicula., Ceratoneis, Stauroneis^ Diadrs- 



mis Fruslulia, Ber/icleja, Homceocladia^ Schizonema., Mi- 



cromegay Dickiea.. 



O r d o II. Co nfe rvales. 



Catenulae virides v- allochroac, tubulo gelineo pcridermico 

 plerumque indilae, simpL, ramosae, copulativae v. reliculatae, 

 cntocyslide el gonidiis varias melamorphoses peragcutibus, 

 Ovula interstilialia, lateralia v. indisliueta: 



F A M. 5 . P R O T O N E M 1 X iE nob. 



Catenulae tenerrimae, mucedineae, achroae, rubentes v- sor- 

 dide coloratse, simplices v. ramosae, saepius brachyarthrae, cel- 

 lulis lateralibus v. terminalib. oomorphis. 



a. Lep t omit e ce: in fluidis variis, imo metallicis, sa- 

 lilis, in syrupis, acidis, oleo pingui et nive oriundae, muce- 

 dineis subsimiles: — Hjgrocrocis, Loptomitus, Sirocrocis, Ne- 

 malococcus y Chionjphe. ... 



b. P r o t onem ece: terrcstres, passim radicatae et viren- 

 tes: — Gongrosira, Protoncma. 



F A M. 4. O S C I L L A R I N .E. 



Tubuli gelinei, catenulas discarlhras v. sphaerarlhras, va- 

 rie coloratas includentes, passim vaginulati v. in strato mu- 

 coso conjuncti, ovuHs rarius distinclis. 



a. O s cill arie ce: tubidi catenulas discarthras inclu- 



