336 COXTRTBT'TIONS FROAI THK XA'n{)XAL IIKUBARIVM 



Navicula antillarum (Clevo .t (Jrunj Munii. 



Alloncis (A'^ai'icnla ?) anlillannii Clove tt Gruu. in Clrve, J5ili. Sv. Vol. Akad, Iliuidl. 



6':8. ph 2, / 11. 1S7S, Castr. Rep. Voy. dialU 15. u. 2: ;^o. y,;. /.j,/ .5. pL 20, f. 



14, pi 2S.f. 11 1886. 

 ScoUopInnv antiUarum rollot. Dial. 288./. ..Ai/. 1888-81). Dc^ Tmii. Syll. Alg. 2: 



265. 181)1. 

 Trachynds anllUarum i'levo, Sv. \'et. Akad. llaiull. 26': 1!M. lS!lt. 

 Nariciila {Alloncls ?) Jcitrzii (Inin.; (1eve, l>ih. Sv. \'ol. Akad. Ilandl. 5^: 8. j)/, i, 



/ 12. IS7H. 



The last does not i^eeni lo ine to be a trood ^vnonvni, Init as I ha\ e nut been able to 

 examine a specimen, and as (Ueve himself is the aulhorily f;>r its identity, I mu^t 

 accept his jiul^^ment rulher than his illustrations. 



Found at stations 2823, 2835, Gu\i of California and off Lctwer California. 



Navicula oinaruensis iCl(^v(*) Mann. 



A^arimla apis Ehrenl). err. <let. Donk. 15rit. Diat. 48. pJ. :./ -;. IS7I 73. Schmidt, 



Atlas ;)/. 12. f. 16. 18-19, 22-2S, 25, 1875; pi 174^ f. IS, 181)2. Schmidt, JahresI). 



Komm. Dent. Meere 2: SO. pi. Lf, 9. 1871. not Kutz. 

 rinnulanaapis Ehrenb. Thys. Al)h. Akad. Wiss. Rerl. 1841: 1211. pi. J. VIII. f. IS. 



1813? 



Diplonvis adonis Brnn vari(»ty omanumsis i'lovo^ Sv. Vet. Akad. Ilandl. 26-': 85. 

 - 1S94. 



Nnvicuhi duhjma Ehrenb. err. del.; De Toni, Syll. Al■,^ 2. 72, 18!1L 



As Cleve says'' it is impo!s.sible to decide positively what S, apis (Ehrenb.) Ktitz. 

 really denotes. Ehrenberg's figure and descrij)tion of PiTUVfhtria api,^ nv^ikv \\ vvci- 

 sonal)ly certain that it is not the present species; nor are the synonyms cited by 

 D^mkin at all illuminating, Kiitzing's ligure^ is almost anything but Donkin's 

 diatom, and more unlike it, if putjsible, is W. SmitlCs hguro determined as .V, diifijina 

 Kiitz. <^ I therefore look upon Donkin's form as a distinct sjM'cies. Although Ehren- 

 berg's name can not be satisfactorily determined, it is inaitplicable to tlu^ {)rcsent 

 Rpecic8 ap above noted, and as there is so mucli donl)t about Grove an<l Cleve's identifi- 

 cation it may be advisable to drop the name entirely until more accurate information 

 is available. I have therefore selected the name omanien.v's as the only one tenable. 

 The form called N, apis Ehrenb., l)y Grove and (Ueve (?)rf (Clevefsays ''Grove & 

 Sturt), " Cleve unites with X, adonis Brun, to which it bears no trace of resemblance. 

 DeToni bundles the whole list together under A", didyma Ehrenb., giving without 

 comment many utterly irreconcilable figures./ That Schmidt recognizes the 

 independent status of Donkin's form is evidenced by the figures given by him under 

 that name.f/ 



Found at station 2848, soutli of Alaska peninsula. 



Navicula ardua Mann, sp. nov. PL.vrK LIII, fuiiufs 2, 3. 



Valval view long-lanceolate, with sides nt)t curved but proceeding in straight lines 

 from the broad central portion to the rounded apices; costae set at an angle of 15'' until 

 very near the apices, then transverse; broader at their outer ends; remote from the 

 raphe, leavinga hyaline line (tn either side of it; those at the center of the valve slightly 



«Sv. Vet. Akad. Ilandl. 26^': 91. 1894. 

 6 Kiitz. Hacill. pi. 28. f. 76. 1844. 



cW. Smith, Synop, Brit. Diat. 1: 53. p/. 17. f. 154a. 1853. 

 ^Schmidt, Atlas pL 174>f> IS. 

 f Sv, Vet. Akad. Handl. 26^^: S5. 1894. 



/Kiitz. Bacill. pL .^/. 7. and pL 28. f. 75. 1844. Donk. Brit. Diat. pL 7./ S. and 

 pi 7./ Fit. 1871-73. 



^Schmidtj Jahresb.K omm. Dent. Meere 2: 8tj. 187 L 



