350 CONTRIBUTIONS FROM Mil NATIONAL HERBARIUM, 



( 'jimhi I in pho* !> Diat. 10. Ii 



* laneeok Bacill. I04.pl. ■• L844 Gruii Verb Zool Bot. 



Gee Wien 10: 663. I860 Pritch. Hist. Infue. ed. i 913. I s '. I Rabh Sussw. 

 Diat. i^ pi 9 ,/' 9. 18 



Ehrenb. Phys. Al.h. Akad Wiss. Bert. 1841: 

 /./. .'. I'. /. /. pi. 8. /. ./". /: 1843; Mikrog. pi U.f.l I II i 



I I :i. pi 9. I I. /•-. pi ■ I \ I; I. W t r l. 6. II 



i III * 5 1854 ii.. i Ehrenb. Phys. Abb Mead. Wias. Berl. is 

 y/ / f • pi / ' 1871 Kli1.1i. Sussw. Dial 17 pl.9.f. I. 1863 W. 



Smith, Synop. Brit. Dial 1: 59. pi. 19. f. 186 L853 Pritch. Hist. Infus. ed i 

 pl.9.f.l39,pl. It. J. 11 18. 1861 Brun, Diat. Up ss pi 9./ ■ 1 1880 Griff. 

 a II. in' Mi.r Diet. ed. I ;:;•">. i>l 15. J ■■ L883 Van Bern* Synop. «.:. j 

 /. : L881; Treat. Dial 158./ 50, 159. ,*/. 1. f 50 1896 !»• Toni, Syll. A 

 204. L891. Cleve, Sv. Vet. Akad. Handl. 26: lis. 1894. II I Smith, 8p. 

 Diat.Typ.no. 196. L874. Belloc, Rev. de Gomm. 3: HO. pi. 3. f. //. 1887. Not 

 Km/. 



oneis baileyi Ehrenb. Phys. Abh. Akad. Wiss. Berl. 1841: 122. 1843; Mikrog. 

 pi. /// f It (not/. W . pi 8. Ill /'. 6 :. IV. j. ii. pi .. I.i .. // /. // It. 

 Ill ./. :. /./. T.J . III./. 14, pi 6. /../'. 17. L854. Kutz. Bacill. 105. L844. 

 Pritch. Bist. [nfns. ed. l. 913. L861. De Toni, Syll. Alg. 2: 207. L891. 

 Stauroneis pteroidea Ehrenb. Phys. Al.h. Akad. Wiss. Berl. 1841: \S.\. L843; 

 Mikrog. pi U. I.i. 5. L854. Ktttz. Bacill. !<>•">. L844. De Toni, Syll. Alg. 2: 

 207. iv» i. 

 Stauroneis amphiU i>i<i Ehrenb. Phys. Al.h. Akad. Wiss. Berl. 1841: 386. pi I. II. 

 /. 9, / •;. L843; Mikrog. pi. /;../'. /s. L854. KQtz. Bacill. L05. pi. ."'. /. 16 17. 

 L844. Pritch. Bist. [nfus. ed. I. 913. L861. 

 Stauroneis brunii Perty; Berib. Diat. Auverg. 76. pi S.f. It. Ii 

 Cleve leaves oul the two first-named synonyms and consequently credits the name 

 to Ehrenberg. I am dependent for the reference upon the accuracy of Ehrenberg's 

 citation, bul as ii is about universally conceded to be correct I quote the reference 

 to Nitzsch without having seen the original publication. 



I do nol favor placing Stauroneis gracilis Ehrenb. in this list. Ehrenberg's original 

 figures 6 represenl a diatom sharper, much smaller, and much more delicate. The 

 same is true of Smith's figures, <= though this fails to agree with the Ehrenberg type 

 because of its narrower stauros. 



The question of the union of Stauroneis with the present genus has been dia 

 under Navicula al><.\ e. 



Found at station 2882, off < Oregon. 



Navicula pinguis Mann. sp. nov. PLATE I.I I I . FIGURE 5 



Valve broad, slightly nam. wed at the center; ends blunt, center depressed ; markings 

 of heavy ridges bearing Large oval Lead-, three to four, the outer row being elongated 

 to the margin; a Longitudinal hyaline area, through which run- the raphe, connecting 

 the apices and bordered on either Bide by a single row of large oval head- of the same 

 number as and continuous with the r\<i- 



Length of valve, 0.160 mm.; width of valve. 0.070 mm. Striae. 28 in 0.1 mm. 

 This species bears considerable resemblance to Grunow's figure of A', subcincta 

 Schmidt.'/ and were this identification correct 1 would not hesitate towrite this as a 



o Ehrenb. [nfus. L75. h 



&Phys. Al.h. Akad. Wiss. Berl. 1841: 386. pi. 1. II. f. /.;. pi .'. I.J. 17. L843; 

 Mien.-, pi. :. I.J. .'. L854. 

 < \X. Smith. Synop. Brit. Diat. 1: 59. pi 19. f. 186. L853. 

 'i Denkschr. Akad. Wien 48': 56. pi /../'. 89. 1884. 



