MANN DTATOMS OF THE ALBATROSS VOYA< .'{.*)!) 



daries of the species, and, whal is worse, to find no halting place whatevei Both the 

 the authors mentioned place this 9pecies under \ powellii Lewis; to which combina- 

 tion is added by Cleve A bartholomei Cleve. & The resemblance between i In- spe< i< - 

 and N. powellii is Blight. Why not then add the more nearl) related A', mirabilis 

 Lend. Fori .' V . i nil ■■! a! ns Schmidt, d N. arnica Cleve & Grun.,< and so on ad libitum? 

 This general type of Na icula has a vasl number of related forms, and we musl dra^i 

 the line rather strictly ai >und a given -\ eciee or have no line to draw . For i In- n 

 [ do nol favor making the above a variety of V. powellii. I have figured the variety 

 found by me, as ii presents the interesting phase of having the marginal .1- well 

 as the internal rowsof costae interrupted at the center, thus making a Btauros-like 

 iran-\ erse band from Bide to side. 



Length of (perfect) valve, 0.160 nun.: width of valve, 0.033 nun. Striae, 50 in 

 0.1 nun. 



Found at Btation 1029H, Bering Sea. 

 Navicula viridis (Nitzsch) Ehrenb. tnfus. L82. /</. 18. f. 16 (in part), /'/. 21. f. I.'. 

 L838. 

 Bacillaria viridis Nitzsch, Neue Schrift. Naturf. Ges. Ealle 3: «.)7. />!. .;./. / S. L817. 

 Frustulia viridis Kiitz. Linnaea 8: 551. Syn. Dial. L833. 



Navicula viridula Ehrenb. tnfus. L83. pi IS.f. 11 (nol pi. 21. f. 14). L838, nol Kiitz. 

 Pinnularia viridis Ehrenb. in part; Phys. Abh. Akad.Wiss. Berl. 1841: pi. 3. I.J. 

 1 /not pi. 1. I.f. 7. TII.f.3. TV.f.S). L843. W. Smith. Synop. Brit. Diat. 1: 

 54. pi. is./. 163d not/. t63a b). L853. Etabh.; Brun. Dial. Alp. 83. pl.8.f.5 

 (not/. £.) issn. Cleve, Sv. Vet. Akad. Eandl. 27 ( : ill. L895. 

 Navicula viridis Kin/.. Bacill. 97. />!. ;./. 18, />/. SO. f. t i. L844. Pritch. Hist, tnfus. 

 ed. 4. 907. pl.9.f. 133 l36(voor). L861. Schmidt, Atlas pi ;.'./. // 14, 19 21. 

 1876. Van Heur. Synop. 7:;. pi :,.(. 5 (nol ./'. 6). L881; Treat. Diat. L65. pi 2. 

 f. 70 (nol ./'. 71). L896. De Toni. Syll. Alg. 2: II. 1891. Eng. A: Pr. 

 Pflanzenfam. Bacill. 1"': 13./ 55C I>. L896. 

 Navicula leptogongyla Ehrenb. (?); Schmidt, Atlas ///. ;."»./'. 26-28. L876. 

 Navicula commutata Grun. ; Schmidt, Alias /J. ',:>.(..;:, .;; (not J i s 7n. 



Navicula {Pinnularia) rupestris Hantzsch; Schmidt, Atlas j>l. ;.',. /'. ;/--/'..' 



40, ',,'.). 1876. 

 Navicula decumana Pant. Beitr. Bacill. Ung. 3: pi 35. f. ,'>'>. L893. 

 Tin.- very variable diatom mighl well be subdivided into several Bpecies were it 

 nol thai the intergradations are si. close that n<> definition of their differences can be 

 made. It approaches another large and variable species, N. major Kiitz., s<. thai cer- 

 tain forms are aboul as well referred i«» one of these as the other. 

 Found ai station 3691H, Okhotsk Sea. 



FRUSTULIA C. Ag\ char, emend. 



Frustulia C. A*:, in part; Syst. Alg. L3. 1824; char, emend. Ag. Consp Diat. 43. 



1832. Etabh. Fl. Eur. Alg. 1: 20. 227../'. 64. Ehrenb. tnfus. 231. L838. (.run. 



Verh. Zool. Bot. Ges. Wien 12: 573. L860. De Toni, Syll. Alg. 2: 276. L891. 



Clove Sv. Vet. Akad. Eandl. 26-': 121. L894. 

 17/// HeurcUa Breb. Ann. Soc. Phyt. e1 Micr. Belg. 201. L868. Van Hour. Synop. 



112. pi 17. f. 1 !. 1881; Treat. Diat. 239./. 39. L896. 



" Proc. Acad. Phila. 1861: (>:>. pi :./. :. L862. 

 M'.ih. Sv. Vet. Akad. ilandl. 5 : 6. pi t.f. ■>. L8 



c Mem. Soc. Emul. St; Brieuc 31. /</. /../'. 21. L879. Schmidt, Atlas pi 160. J 

 L890 



<M)|.. (ai. ///. 160. f. S 5. 



t Sv. Vet. Akad. Ilandl. 18': 12. pi S.f. ... 1881. 



31713 — vol L0, i'i ~> <»7 H) 



