MANN DIATOMS OF THE ALBATROSS VOYAGES. 361 



Synop. Brit. Diat. 1: 46. pi 16. f. m. 1853. Kabh. FI. Eur. Alg. 1: 171. 18G4. 

 Pritch. Hist. Infus. ed. 4. 903. 18G1. Grim. Verh. Zool. Bot. Geg. Wien 12: 

 649. pi. .?. /. 14a-h. ISGO? Sciuim. Vorh. Zool. Bot. Ges. Wien Siippl. 17: G8 

 (not pi. ,?. /. 41). 1867. Donk. Brit. Diat. 42. pi. 6. f. 11. 1842. Lewis, Proc 

 Arad. Phila. 1865: 10. pi 2. f. 10-11. 18G5. Cleve & Grim. Sv. Vot.'Abid 

 Ihuidl. 17-: 47. pi S.f. 59. 1880. 



Colldonrma viridulum Breb.; Kutz. Sp. Alg. 105. 1849. H. 1.. Smith, Sp. Dial 



Typ. no. 88. 1874. Pritch. IliyL. Infus. <h1. 4. 926. J8G1. 

 Navicula crassincrria J5reb.; W. Sniilh, Synop. Brit. Diat. 1: 47. pi 31. f. ^7i. 1853 



Pritch. Hist. Infus. ed. 4. 900. 1801. Grnn. Vorh. Zool. Bot. Ges. \\ien 12: 548' 



pi 3. J. 12. ISGO. Donk. Brit. Diat. 42. pi r>.f. 12. 1872. H. L. Smith, Si> Dial 



Typ. no. 313. 1874. 



Friistulia torfacm A. Braun in R;d)h. Su.ssw. Diat. 50. pi 7.f. ?. 1853. 



FruHiaUa snrnniai Rabh. FL Eur. Alg. 1: 227. 1864. Griff. & Henf. Micr. Diet. ed. 



3. 323, pi 14. J. 17. 1875. II. L. Sniilli, Sp. Diat. Tvp. no. 172. 1871. Kahh 



Siissw. Diat. 50..;j;. 7./. /. 1853. Pritch. Hi-st. Infus. ed. 4. 924. 18G1. Plitz. in 



Hanyt. Bot. Abliandl. 2: 58. pi 4. J. 4-.H. 1871. 

 SchizonniKi tirididuin Rabh. Fl. Eur. M^. 1: I'GG. 18G4. 

 Vanhcurckla rhmnboidcs Breb. Ann. Soc. I'liyf. et Micr. Belg. 204. 18G8. Van H<Mir 



Synop. 112. pi 17. f. 1-2. 1881; Treat. Diat. 240. pi .5./. 249-250. Truan, AnaL 



Soc. Espan. Hist. Nat. 13: 352. pi S.f. 1. 1884, 

 Ynnhcurckia rrassmrrvia Brel). Ann. Soc. Phyt. et Micr. Belg. 204. 18G8. Van 



Hour. Synop. pi 17. f. 4-5. 1881. Truan, Anal. Soc. Espan, Hist. Nat 13: 3^'> 



pi S.f. 2. 188 1. 



]anhcurrkUi cindulu Breb. Ann. Soc. Piiyt. et Micr. Belg. 203. 1808. Van Heur 

 Synop. 112. pi 17. f. 3. 1881. 



Fruntuliu viridula De Toni, Syll. Alg. 2: 278. J891. 



1 have worked out the above extensive synonymy because this diatom is very 

 widely distributed and has been included in the older as well as the more recent 

 diatom literature under so many names that the nomenclature is very confusing. 

 lu one or two instances I have left out supposed synonyms, because their exact applb 

 cation is impossible to determine. Thus Navicula Ilncolata Ehrenb.« is included by 

 Clevet- in the above, though upon what basis I can not determine. The figures and 

 descriptions of Ehrenberg convey no image sulliciently exact to determine even if it 

 belongs to tills genus, much less if t,, this .species. In fact, De Toni includes it, and 

 with as much reason, under Navicula scrians (Breb.) Kutz.f Manv of Khrenberg's 

 figures are quite unlike the others. The same is true to some extent of the original 

 Navicula rhomhvidcs Ehrenb., from which the above specific name is derived; a°id I 

 would not hesitate to pass over this authority, were it not for the fact that (his particu- 

 lar name has been so constantly repeated by succeeding authors with better figures 

 and descriptions that it, is ]>retty certnin this particular diatom is meant in "each 

 instance. As these diatoms, though sometimes free, are generally inclosed in gelatin- 

 ous tubes or masses, the older observers gave especial attention to this transielit con- 

 dition; and in many cases we have elaborate descriptions of the appearance of these 

 forms in bulk, without a word on the sculpture or build of the frustules; and where 

 figures „f the original plants are attempted they are likely to be so minute as to be 

 worthless. Tleve has repeatedly staled his inability to identify some of these earlier 

 figures and de.scriptions. 



Found at station 2885, off Oregon. 



« Phys. Abb. Akad. Wiss. Berl. 1841: 118. pi 1. 111. J. 4a, pi 2. VI. f. 27, pi 4 T f. 6 

 1843; Mikrog. pi 16. T.f. 3, II. f. 1-2. 1854. 

 ^ Sv. Vet. Akad. Handl. 26": 122. 1894. 

 'De Toni, Syll. Alg. 2: 141. 1891. 



