KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 8. 69 



8. C. directum Arch. Micr. Journ. 1862, p. 249, tab. xn, fig. 23 — 24. 



Crass. 18 — 22 ju; long. 300-400 ,«; lat. apic. circ. 10 — 12 ,«. Striae longitudinales 

 membran» circiter 9 — 10 in 10 f*. 

 Blueskinbay (34, 40). 



9. (?) C. gracile Beéb. List. Desm. p. 155, tab. 2, tig. 45. 



Crass. 6,5 — 7,5 /u- long. 130 — 235 fi; lat. apic. 3,5 u. 



Arthur Pass (17); Blueskinbay (40); Bluff (51); Winton (58); Taupo (156). 



There being raerely sterile cells, it was impossible to decide whether the state in 

 question really belongs to C. gracile, which has globular zygospores (see Arch. Dubl. Micr. 

 Club. (1868) p. 196, and Nordst. Sydl. Norg. Desm. p. 40) or to Clost. Lundellii Lagerh. 

 Bidr. Sv. Alg. p. 53 (Cl. gracile Lund. Desm. suec. p. 82, tab. 5, lig. 15), where they 

 are quadrangular with a spine in each angle. — Some specimens bear a general resem- 

 blance to Cl. bicurvatum Delp. Spec. Desm. p. 208, tab. 18, fig. 37 — 39. 



Cl. sp. ad C. gracile accedens. Diam. 13 //; long. 300 — 330 f.i. Ad Cl. Brebissonii Delp. Spec. Desm. 

 p. 207, tab. 18, fig. 20 — 21 (et ad Cl. strigonum 1. c. fig. 3 — 5) nonnihil accedit, sed inulto minus; Cl. gracili 

 fere simile, sed majus. — Blueskinbay (35). 



10. C. Ehrenbergii Menegh. Syn. Desm. p. 232. 



Crass. 75 — 85 ,»; long. 400 ,u. 

 Ohaeawai (64); Tokano-river (170). 



11. C. moniliferum (Bory) Ehrenb. Infus. p. 91, tab. 5, fig. 16; Lunulina monilifera 



Bory Hist. Nat. d. Zooph. tab. 3, fig. 22, 25, 27. 

 Crass. 40 /u; long. 230 /*. Crass. : rad. — 1 : 1,4. Forma ventre levissime inflato. 

 Waimakariri river (5). 



12. C. Diana' Ehrenb. Infus. p. 92, tab. 5, fig. 17. 

 Crass. 23 — 25 fi; long. 300—350 /u; rad. circ. 70 fi. 

 Auckland (70); Rotomahana (316). 



13. C. Cynthia De Not. Desm. Ital. p. 65, tab. 7, fig. 71. (Cl. ruficeps Ehrenb. 



Entw. d. Infus. pag. 67). 

 Crass. 18—22 ,«; long. 134—180 t u ; lat. apic. 8 ,u. Striae 6—9 in 10 jt, 

 Blueskinbay (34, 35, 40); Taupo (161), 



Forma angustior. Crass. 14 — 15,w; long. 120 — 176/*; stria; longitudinales 6 — 7 in 10{i. 

 Christchurch (49); Bluff (51); Papakauri (109); Taupo (155). 



According to Ehrenbkrg in Beitr. z. Erk. gr. Organ. pag. 238 (sepai\ p. 94) the 

 membranc of Cl. ruficeps is striated. 



14. C. setaceum Ehrknb. Beitr. z. Erk. gr. Org. ]). 239; Ralfs Brit. Desm. tab. 30, fig. 4. 



Crass. 9—10 ,«; long. 230—300 f*. 

 Blueskinbay (34). 



