380 CONTRTRTTTIONft FROM TILE NATIONAL IIEKBARIVM. 



Nitzschm smWtii llalfw in Pritcli. Hist. Tnfus. ed. 4. 781. Cleve & rnun. S^•. Vet. 



Akad. Ilandl. 17-: 81. 1880. Gruii. Vorli. Zool. But. Ges. Wieti 12: 5()4. 1S(J2. 



Do Toni, Syll. Alg. 2: 521. 1892. 



/■ 



rrUchardia stniihUJ{'d\)\i, Fl. Eur. Aly. 1: 1G3. 18G4. 

 Niizsdda spectahilis \\\ Sinitli, Synop. Brit. Diat, 1: 39. pZ. 14.f. tiO. 1S53 (not 

 Ehrenb.). 



Nitzschia imignis marginijera Grun. in Vli^w it Criui. Sv. Vet. Akad. Ilancll. 17-: 

 84. /;/. G.f. 105. 3880? 



Riilfs cliangtMl William Smith's name .V. spaiahilk U) X. .wuihli bocause of tlio 

 N. spectabiUs of Ehrt'nl>c'r^^ There is no tlifference 1)etween Ibis anil .Y. ivHli/nla, tho 

 Rigrn(ji(l .shape of tlie frustules in N. stnithit l»einir a vanisliing quantity in many eases 

 and of no specifie im])ortance when present. As rirunow saw oidy th(^ zonal view of 

 the last-named synonym above, it n'mains doubtful wh(>th(*r it was this or N. ^calaris 

 (Ehrenb.) W. Smith. II. L, 8mitli's type referred to above is nusnamed, l)ein.^^ a line 

 N. scalaris and identical with his type no. 305, except that it is a little smalh'r, Tlie 

 two species which Van Ileurck considers as possible varieties of N. insignis,^^ namely, 

 N. adriatica Grun. ^'> and N. {udriaticay'dv. ?) sj>athuliferaGnu^.<' are rather varieti(^s of 

 N. scalaris. It is more difhcult 1o incbule wilh V. scfdaris N. {insignh var. ?) noin- 

 bilis Grun., which Grunow^ makes an nnqn<'stioned varit^ty of the pr<^sent speci<^s. 

 It is certain it does not belong here. 



Found at station 2823. Gulf of California. 



Nitzschia panduriformis Greg. Trans. Roy. Soc. Edinb. 21; 529. pi 14- /• 102. 1857. 



Van TIeur. Synop. 172. pi. 58. J. 1-4 (/. 5^6 doubtful). 1881. Gh^ve, 15ih. Sv. 



Vet. Akad. Ilandl. 1'^: 12. 1S73. Cleve & Grun. Sv. Vet. Akad. nan<ll. 17-: 71. 



(pi 5J. 92 ?). 1880. De Toni, Syll. Alg. 2: 501. 1892. Van Heur. Treal. Biat. 



38G. pL 15, / 500. 189G. Wolle, Diat. N. A. ;>?. 44./. S-4, 9. IS90. Prilch. 



Hist. Infus. ed.4. 780. 18(il. 

 TryhUnnellu lata AVitt, Journ. Mus. Godef. 1: m. pi S. f. 6. 1873. Lagers. Hih. >Sv. 



Vet. Akad. Ilandl. 3'': 27. pi l.f. 3, 187(). 

 Mtzschia lata Clow, Bih. Sv. A^et. Akad. Ilaudl. 5"^: 12. 1878. 



Witt's T. lata is a very much more finely mark(^d variety than (lie (ypc, other- 

 wise r|uif(! typical; lh(^ form of it which Lagerstcdt calls 'var, elegam'" stands mid- 

 way between it and the ty])e. His supeii) figure is, like all his figures in llu' sanu^ 

 work, a good api)roach to the ideal in dc^picting {}w. diaU)ms. The N, pand ar IJonms 

 nicobarica Grun.^' dot^a not belong to this species, but is a form of his A^. UUorahs^ 

 which in turn is a variety of N, tryhlionella llantzsch. There is some doubt wilh 

 regard to the two forms of A^in Ileurck's cited above, which also correspond to Chive's 

 figure, their entire lack of the hyaline area, the so-called "sulcus," juaking (hem 

 questionable. Van Ileurck' drops them out from the above category. 



Found at stations 2807, 2808, 2823, 2835, 300SH, Galapagos Islands to Gulf of Cali- 

 fornia and Hawaiian Islands. 



Nitzschia plana \V. Sniitl), Synop. Brit. Diat. 1: 42. pi. 15. f. 114. 385;^. Van J [cur. 

 Synop. jpl. 5S.J. 10-11. J881; Treat. Diat. :587. jyl. 15. J. SOS. ISm. Di' Tniii, Syll. 

 Alg. 2: 503. 1892. Hahh. Fl, Eur. Alg. 1: 15;5. 1864. Cleve & Grun. Sv, V(>( , Akad. 

 Ilandl, 17^: 72, 1880 (not II. L. Smitli, Sp. Diat. Typ. no. 3G3. 1874). 

 Nitzschia marginuhitn didyma Grun. in Cleve <k Gruii. Sv. Vet. Akad. Ilandl, 17-: 

 72, 1880. Van Hour. Synop. pi 58. f. U. ISSl. De Toiii, Syll, Alg. 2: 501, 1892. 



"Van Heur, Synop. pi. 61. f. f, ,?. 1881. 



&Sv. Vet. Akad. Handl. 17-: 84. 1880. 



<' Op. fit. 85. 



t^Fenzl, Relae Novara Bot. 1: 97. pi. lA.f. 4- 1870 



« Treat. Diat. 1890. 



