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MAN N 



DIATOMS OF THE ALBATROSS VOYAGES. 



347 



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/ 



Navicula megaloptera Horil). Diat. Auverg. 88. pi. 4. f. 6. 1893. 



Naxknla costata Ehronb.; Herib. Diat. Auverg. 87. pi 4-f- 7. 1893, not Kutz. 1844. 



A mistake that is constantly being repeated is the uniting of Kiitzing's figure with 

 this species, to which it ha.s not tlie rc^motest resemblance. It is the same as iV. micro- 

 stoma Kutz.,a which is only a variety of N. Jinna Kiitz., as De Tonit* and others 

 point out. Nevertheless, De Toni,c after recognizing this fact, quotes this error of 

 Kutzing. rieve falls into the same juistake, though omitting any reference to the 

 figure of Ktitzing, his diagnosis Iteing in perfect harmony with Ids' figure. Both 

 Donkin and O'Meara in the above citalions note th<> mistake made by Ktitzing. 



Found at station 3G11, Bering Sea. 



Navicula lyra Ehrenb. Phys. Abh. Akad. W'iss. Berl 1841: 119. pi. 1. I. f. 9a. 1843. 

 Kiitz. Bacill. 94. pi. 28. f. 55. 1841. Greg. Trans. Roy. Micr. Soc. Edinb. 21: 485. 

 pi. D.f. IS'l-ih. 1857. Jan. & Kab. in Rabh. IJcitr. 1: 10. pi. S.f. 7. 1803. Jan. 

 Abh. Schl. Ges. Vaterl. Gull. 1862^: pi. lA.f. 2(1 18G2. W, Smith, Synop. Brit. 

 Diat. 1: pi. 17. f. 152a*. 1853; 2: 93. 185fi. Britch. Hist. lufus. ed.4.897. 1861. 

 Donk. Brit. Diat. 14. pi. 2.f. 7. 1871-73. Schmidt, Atlas pi. 2. f. 4-5, 8-9, 16, 

 18 (not./. 29-S3, f. 25-27 doubtful). 1875; Jahresb. Komm. Deut. Meere 2: pi. 1. 

 f. .34-35, 38-39 (all doubtful). 1874. Raldi. Fl. Eur. Alg. 1: 177. 18G4. Van 

 Heur. Synop. 93. pi. 10. f. 1-2. 1881 85; Treat. Diat. 203. pi. 4-f- 161- 189G. Jan. 

 Diat. Gaz. Exped. pi. 15. f. 8 9, 13. Cleve, Bih. Sv. Vet. Akad. Handl. 5": 4. pi. 

 l.f. 1. 1878; Sv. Vet. Akad. Ilandl. 27-*: G3. t895. De Toni, Syll. Alg. 2: 95. 

 1891. Pant. Beitr. Bacill. Ung. 1: 27. pi. 17. f. 150. 1886; 2: 50. 1889; 3: pi. 

 33. f. 466, 4S8, pi. 34- f. 479. 1893. Grev. Edinli. New Phil. Journ. n. s. 10: 28. 



pi 4-f. 3. 1859. 



/■ 



Truan, 



Anal. Soc. Eapan. Hist. Nat. 13: 44. pi S.f. 23-24^ 1884. Gran. Verh. Zool. Cot. 



Ges. Wion 10: 532. pi. S.f. 22 (not/. 23). ISGO. H. L. Smith, Sp. Diat. Typ. no. 



292. 1874. Wolle, Diat. N. A. pi. ULf 4, 6', .9, 14. 26. 1890. 

 Naiicula hullata Xorm, Trans. Micr. Soc. I.cmd. n. s. 9: 8. pL 2.f. 7. LSGl, Moeb. 



Diat.-taf. pi, SG,f 7. 1890. Schmivll., Allans ^>Z. S.f 8-9, 1875. Castr. Rep. Voy. 



Chall. Bot- 2: 29. pi 28. f 7 (not/. 10), pi SO. f 7. 1886. 

 Pinnuiaria coupern Bail. Sniithson. Contr. Knowl. 2^: 39. pi. 2. f SS. 1851. 

 Navicula couperi Bail.; Schmidt, Atlas pi 2. f. 12. 1875? 

 Navicula Zanzibar ica fJrov. Trans. Micr. Soc. Lond. n. s. 14: 129. pi 12, f, 22. 18G6. 



Schmidt, Atlas pi 2.f S. 1875. ('astr. Kop. Voy. ChalL Bot. 2: 31. pi 28. f 8, 

 1886. 



Navicula robertsoniana Grev. Trans. 15ot. Soc. Edinb. 8: 235, pi S, f. 9. 1866. 



Schmidt, Atlas;)?. 2.f 7, IL 1875. Wolle, Diat. N. A. pi 16. f 8, 1890. 

 Navicula durandii Kitt.; Schmidtj Atla^ pi 129. f. 1-3. 1888. 



I have not included here the reference in O'Meara, c^ because all six figures are worse 

 than worthless. Nor is Schmidt's figure, cited above and called N. couperi J^^\\,^ like 

 the original or a good example of N. Lyra. Cleve adds N. seductilis Schmidt, e which 

 I also omit. It is plain that this polymorphic form lias no hard and fixed boundaries, 

 and that what is to be included or wdiat not must always be somewhat a matter of per- 

 sonal preference. I feel that in this and similar cas(^s condensaticm ought to be carried 

 only so far as that the average student will be more likely to pick out the species 

 assigned than any oihor. Where, in other words, the relationship begins to seem 



« Kiitz, Sp. Alg. 71. 1849. 



^>De Toni, Syll. Alg. 2: 155. 1891. 



f^Op. cit. 18. 



f^Proc. Roy. Irish Acad. II. 2: 391. pi SS.f, 1-6. 1875, 

 e Schmidt, Atlas pi 2.f. 85-36. 1875. 



