342 



CONTiilBUTTOZS^S TKOM THE XATIOXAL HERBAIUU.M. 



Naviiula nmhiijua l'^]ir('nl>. vn\ <1ct. ?; W. Suiitli, SyiKtp. l^iil. T)iat. 1: oL pL 



16. /. 149. front, f. CXLIX. J85:i. Donk. l?rit. Dial. 39. pi 6. /. 5, 1871-73. 



O'Mvara, Proc. Roy. Iri^h Acad. II, 2: 360. pi 31. J, 10. 1875, H. L. Sniilli, Sp. 



Diat. Typ. no. 243. 1874, Bran, Diat. Alp. (57. pi 7.f. 2S. J880. Van Ileur. 



Synop. 100. pi 12, /. 5. 1881; Tivat. Diat. 214. pi 4. / 102. 1896. Truan, AnaL 



Sue. Espan. Iliist. Nat. 13: 348. pi 7./. 28. 1884. Gnin. Verb. Zool. I^oL. Gey. 



Wien 10: 529. />Z. 2.f. 3S{1). 18G0. De Toni, SylL Alg. 2: 137.1891 (not Sduuu. 



S<hrift. Phys. Okon. Gos. Konigsb. 10: 88. pi 2.f. 14. 18()9). 

 Navicula sphaerophora Kiitz.; Grun. Verli. Zool. Bot. Gos, Wit^n 10: 540. pi 2. /, 



34. 1800.? 



Clevonnitos A^. ambifjua Ehronl>., adding a question mark, and the sanu^ in Kul/.ing/* 

 to tin* above. 1 ran soe no reason for lliis. Ehr(^nb<Tg's figunvs are as usual not 

 uniform, bul noncof iliem^ noi liis meager descriptions, warrant their union with this 

 well-marked species. The fact is that a number of authors, niaiiily those cited above, 

 have given to a variety of N. cuspidata having th<! gi^u^'al oulline of some of Ehren- 

 berg's figure Sj the name N. arnhlgua Elirenb. The first d(4inite ilgure and description 

 is by W. Smiths and many of the ol<ler diatomists have maintained that the name 

 should bo credited to hiniy a procedure entir(4yout of ac^cord with modern usage, 

 Then^ is, however, no questi( n tlial hisspecit^s, so well iigured and described, belongs 

 here. Do Toni and Brun look upon the two as separat{% but Van Ileurck and others^ 

 wliih' l)rinting their figures and descriptions s(^parat(4y, state that tln^y are probably 

 alike. 1 have not only examined the many figures but anuml)er of specimens of the 

 two, as II. E. Smith's types, nos. 243 and 259, and find them to be only unimpurtant 

 varieties. 



Cleve also groups here N. sphaerophora Kut/..<* The figure is. a little suggestive 

 of that species, but it w^ould be mislemling to include this distinct diatom h(Te. His 

 union of N. hirostrala Greg, and^^ N. quarnerensis Grun.f is a mistake. It is of inter- 

 est that both N. cuspidata and the variety calhnl as above, V. amhig\ia^ affo.id fre- 

 qiK^nt examples of the internal craticular platens which wtTo formerly known as 

 SurircUa cralicula, Craticula ehrcnbergii, and Stictodrsmis cratkula. Good figures of 

 this structure are given by Van Heurck and by Ileribaud./ 



Found at station 3607, Bering Sea. 



/■ 



Prilch. Hist. Infus. ed. 4. Sd:i.pl7.f. 67; pJ.15.J.12. 1861. Van lleur. Synop. 

 90. pl.9.f.5-6. 1881; Suppl. -pi B.f. 20. 1885; Troat. Dkt. Id'i.pl.S.f. 147. 189G. 

 W. Smith, Synop. Brit. Diat. 1: 53. j^l. 11. f. 1.54, Front, f. CLIV. 1853. Donk. 



/■ 



Kabli. Fl. Eur. Alg. 1: 203. 18(54. 



Schmidt, .Tahresb. Komm. Deut. Meerc 2: 85. pi. l.f.7a-b. 1874. Schmidt, Atlas 

 pi. IS.f. 1-3. 1875 (not pi. 69. f. 30, 37-39. 1881). O'Meara, Proc. Roy. Irish Acad. 

 U. 2: 402 (not pi. 33. f. 29). i875. II. L. Smith, Sp. Diat. Typ. no. 2G5. 1874. 

 DeToni, Syll. Alg. f .• 71. 1891. 



Navicula (P innnlaria) d'uhjma Elirenb. Pliys. Abh. Akad. Wiss. Berl. 1839: 155. 

 1841. 



Pinnularia dldyma Elirenb. Pliys. Al)li. Akad. Wiss. Berl. 1841: 383. pi. 2. IV. f. 3, 

 pi. 2. VI. f. 24, pis. VJI.f. J5»(?).1843. Jan., Schlerf. Ges. Vaterl. Cidl. 1862-': 

 28. pl.2B.f.l3. 1SC)2. 



a Kiitz. Bacill. 95. pi. 28. f. 66. 1844. 

 6W. Smith, Synop. Brit. Diat. 1: 51. pi IG./. l-H). IS53. 

 cDonk. Brit. Diat.34.pl. 5./. W. 1871-73. 

 (^ Quart. Jouni. Micr, Sci. 3: 40. pi. 4-f- lo. 1855. 

 '-Verb. Zoul.-Bot. Ges. Wien 10: 530. pl.S.f.S. 18(J0. 



/Van Ileur. Synop. pi 12. f. 6. 1881; Treat. Diat. pi. 4- f. 193. 1S9G. Ileril). Diat 

 Auverg. pi 4. f. 15. 1893. 



