190 Georgevitch, Desmidiaceen aus dem Wlasina-See. 



III. Gattung Hyalotheca Ehr. 



1. H. dissiliens var. minor Delp. — Cooke, Brit. Desm. 

 T. III. Fig. 1. 



IV. Gattung Desmidium Ag. 



1.* D. Baileyi Ralfs — Delp., Desm. subalp. T. III. 

 Fig. 16—19. 



Long. 24 pL, lat. 18 [x. Icon. nostr. 1. 



2.* D. Schunrzii Ag. — Cooke, Brit. Desm. T. V. Fig. 2. 

 Diam. 18x15 [x. 



V. Gattung Cylindrocystis Menegh. 



1.* C. crassa De Bary — Cooke, Brit. Desm. T. XVIII. 

 Fig. 2. 



Long. 39 IX, lat. 20 /«. 

 2.* C. roseola Turn. — West, Brit. Desm. T. IV. Fig. 39. 



VI. Gattung Gonatozygon De Bary. 



1.* G. Kinahani (Arch.) Rabenh. — West, Brit. Desm. 

 T. II. Fig. 1—3. 



2.* G. pilosum Wolle — Wolle, Desm. U. S. Tab. I. Fig. 2. 

 Long. 221 fi, lat. 15 //. 



VII. Gattung Closterium Nitzsch. 



1.* Gl. abruptum West — West, Brit. Desm. T. XX. 

 Fig. 6—10. 



Long. 156 fi, lat. 12 /x, lat. ad apic. 6 fj.. 

 2.* Gl. Archerianum Cleve — Lundel, Desm. Suec. T. V. 

 Fig. 13. 



Long. 176 jx, lat. 20 [x, lat. ad apic. 16 //. 

 3.* Gl. attenuattum Ehrb. — West, Brit. Desm. T. XXII. 

 Fig. 1. 



Long. 550 [x, lat. 39 jx, lat. ad apic. 6 — 8 jx. 

 4 .* Gl. cornu Ehrb. — West, Brit. Desm. T. XX. Fig. 1—5. 

 Long. 162 fi, lat. 12 fx. 

 5.* Gl. Gynthia De Not. — West, Brit. Desm. T. XL 

 Fig. 1-3. 



Long. 138 fi, lat. 15 fx, lat. ad apic. 3 fx. 

 6.* Gl. DianaeEhvh. —West, Brit. Desm. T. XV. Fig. 1—6. 

 Long. 294 fi, lat. 20 fx, lat. ad apic. 6 //. 

 7. Gl. didymotocum Corda — West, Brit. Desm. T. XII. 

 Fig. 1—5. 



Long. 525 fx, lat. 38 fx. 

 8.* Gl. directum Arch. — Cooke, Brit. Desm. T, VIII. 

 Fig. 3. 



Long. 207 fx, lat. 12 /x. 

 9.* Gl. Ehrenbergii Menegh. — West, Brit. Desm. T. XVII. 

 Fig. 1—4. 



Long. 522 /x, lat. 72 fx, lat. ad apic. 15 //. 



