ON THE DESMIDIE.E OF NORTH WAXES. 



43 



Cosmai'ium Phaseolus, Breb. 

 **pra9morsum, Breb. 

 *pseudo-couuatuin, 



[Nordst. 

 **pseudo-uitidulum, 



Nordst. 

 *pseudo-pyramidatum, 



Lund, 

 pyramidaturn, Breb. 

 Balfsii, Breb. 

 tetraopbtbalmum, 



"Kiitz. 

 tincturu, Ralfs. 

 *truncatellum, Perty. 

 undulatum, Corda. 

 *variolaturu, Luud. 

 *Xanthidium armatum, Breb. 

 Brebissonii, Balfs. 

 cristaturu, Breb. 

 f asciculaturn , Ehr. 

 Arthrodesmus Incus, Hass. 



octocornis, Ebr. 

 Staurastrum aciileatura, Meuegh. 

 alternans, Breb. 

 Arachue, Balfs. 

 *Arctiscon, Lund. 

 aristiferuni, Ralfs. 

 *aversurn, Luud. 

 Avicula, Breb. 

 bracbiatum, RaLfs. 

 **Brasiliense, Lund. 

 *Cerastes, Lund, 

 controversum, Breb. 

 *cristatum, Nag. var. 

 cuspidatuin, Breb 

 cyrtocerum, Breb. 

 dejecturn, Breb. 

 furcigerum, Breb. 

 gracile, Ralfs. 

 **grande, Lund. 



hirsutum, Breb. 

 **inflexuni, Breb. 

 lasve, Ralfs. 

 *longispinum, Bailey. 

 ruargaritaceum,Menegb. 

 **megacantbuni, Lund, 

 muticum, Breb. 

 *Ophiura, Luud. 

 orbiculare, Ralfs. 

 paradoxum, Meyen. 

 * „ var. longipes, 

 [Nordst. 

 polyniorpbuni, Breb. 

 *Pringsheirnii, Reinsch. 



Staurastrum **pseudofurcigerum, 

 [Reinscb. 



punctulatum, Breb. 

 **Sebaldi, Reiuscb. 



spinosiun, Ralfs, 



spongiosum, Breb. 



teliferum, RaLfs. 



tetracerum, Ralfs. 



tricorue, Breb. 



tumidum, Breb. 



vestiturn, Ralfs. 

 Docidium Baculum, Breb. 



clavatum, Kiitz. 



Ebrenbergii, Ralfs. 



miuutum, RaLfs. 



nodosum, Bailey. 



noduLosum, Breb. 



truncatum, Breb. 

 Tetmemorus Brebissonii, Ralfs. 



grauulatus, Ralfs. 



laevis, Ralfs. 

 Closterium acutum, Breb. 



angustatum, Kiitz. 



attenuatum, Ebr. 



Cornu, Ebr. 



costatum, Corda. 

 "Cynthia, de Notaris. 



Diaua3, Ebr. 



didymotocum, Corda. 



,, var. Baileyanum. 

 *gracile, Breb. 



intermedium, RaKs. 



Jenueri, Ralfs. 



juneidum, Ralfs. 



Leibleinii, Kiitz. 



lineatum, Ehr. 



Lunula, Ehr. 



moniliferum, Ehr. 



Ralfsii, Breb. 



rostratum, Ehr. 



setaceum, Ehr. 



striolatum, Ehr. 



turgiduru, Ehr. 

 Penium Bi'ebissonii, Meuegh. 



closterioides, Ralfs. 



Cylindrus, Breb. 



Digitus, Breb. 



iuterruptum, Breb. 



margaritaceum, Breb. 

 *Nagelii, Breb. 



truncatum, Breb. 

 Spirotajnia condensata, Breb. 



obscura, Ralfs. 



January 20, 1881. 



A. W. Wills. 



