.* 



MANX DIATOMS OF THE ALBATROSS VOYAGES. 359 



daries of the species, and, what is w-nso, to find no lialling place whatever. Botli the 

 the authors mentiuued place tliLs species under N. powdlii Lewis; '^ to which combina- 

 tion is add(Hl by Cleve N. bartholonieiCAv\i\^ The rosemhhince Itetweon this species 

 and .V. jioveUk is sli-^dit. W'liy not then a<ld tln^ more nearly rtdated .V. inimhilis 

 Leud.-Fort.jC N. inferred^, as ^r\nWv\\,d ^y. amim (1eve &;. Grun.,cand so on ad libitum? 

 This general ty])o of Xa' dcuhi has a vast number of related forms, and we must draw 

 the line rather strictly arnund agiNcn speci(\s or have iii> line to draw. For this reason 

 I do not favor making the al)ove a variety of .V. powdlii I have figured the variety 

 found by me, as it ijresents the interesting pha.se of having the marginal as well 

 as the internal rows of costae interrupted at the center, thus making a stauros-like 

 transverse band from side to sitle. 



Length of (perfect) valve, O.bU) mni.; wi(bh of valve, 0.033 mm. Striae, 50 in 

 0.1 mm. 



Found at station 4029II, B<>ring Se;i. 



Navicula viridis (Xitzseh; Ehnuib. Infus. 1S2. j)L IS. f. 16 (in part), j)l. 21. f. 12. 

 1838. 



BariUana viridis Nitzsch, Ninie Sclu'ift. Naturf. Ges. Ilalle 3: 1)7. pi. 4.f. 1-3, 1817. 



Frusliilia riridis Kiitz. Linnaea 8: 551. Syn. Diat. 1833. 



Navicula viridula Ehrenb, Infus. 183. ph 13. f, 17 (not pi. 21. f. 14), 1838, not KUtz. 



Pinnularia viridii^ Ehn^d). in ]>art; Phys. Abli. Akad,\Viss. Berl. 1841: ])L 3. I,f. 

 1-2 (nut pi /. Lf. 7. in J, 3. IV. f. 3). 1843. W. Smith, Synop. Brit, Diat. 1: 

 54. pi. 18. f. lG3d (nol/. KUUi-h). 1853. Rabh.; Brim. Diat. Alp. 83. pi S,f, 5 

 (not/. 4.) ]880. Heve, Sv. Vet. Akiub Ilandl. 27'^: 91. bS95. 



Navicula viridis Kiitz. liaciH. f>7. pi -If. IH, pi 30. f. 12. 1844. Pritch. Hist, Infus. 

 ed. 4. 907. pi D.f. 133-I3(;(in}ov). 18ni. Schmidt, Atlas pi 42. f. 11-1-U 10-21, 

 187(). Van lleur. Rynop. 73. pi r>.f 5 (not / 6). 1881; Treat. Diat. 105, pi 2. 

 /. 70 (not /. 71). ]8n(>. De T(jni, Syll. Alj?, 2: II. 1893. Eng, & Fr. 

 Pflanzenfam. Hacill. 1'^': 43./, fjoC-D. hSOH. 



Naviada leptofjomjyla Ehrenl>.(?); Sc^unidt, Adas pi 45, f, 26-28. 1876.. 



Navicula coimnuiala Grun.; Schmidt, Atlas pi 4''>-f- 35-37 (not/. 22-25). 1876. 



Navicula {Pinnularia) rwpcstris IlantzKch; Schmidt, Atlas pi 45, /. 41-43 (/ 38- 

 40, 44"^)- 187G. 



I 



Navicula decnmana Pant. Beitr. BaeilL I'ng. 3: pi 35. f. 40D. 1893. 



This very variable diatcun might well be wubdividetl into several species were it 

 not that the intergradatiuns are so close that no definition of tlu^ir differences can be 

 ma(h^ It approaches another large and variable species, JV. major Kiitz., so that cer- 

 tain forms are about as w ell referred to one of these as the other. 



Found at station 369 III, Okhotsk Sea. 



FRXJSTULIA C. Ag. char, emend. 



FrustuUa C. Ag. in part; Syst. Alg. 13. 1824; char, emend. Ag. Con^p. Diat. 43. 

 1832. Rabh. FI. Eur. Alg. 1: 20, 227./. f>4. Ehrenb. Infus. 231. 1S3S. Grun. 

 Verb. Zool. But. Ges. Wien 12: 573. IStiO. De Toni, SylL Alg. 2: 276. 1891. 



Cleve, Sv. Vet. Akad. Kandl. 26-: 121. 1894. 

 Van Ilcurckia l^veh. Ann. Soc. Pliyt. et Micr. Ibdg. 201. 1SG8. Van Heur. Synop. 

 112. pi 17. f. 1-2. 188]; Treat. Dial. 239./. 3U. 1890. 



ctProc. Acad, Phila. 1861: 65. pi 2. J. 2. 1802. 



&Bih. Sv. Vet, Akad. Ilandl. 5": 0. pi l.J. 5. 1878. 



cMem. Soc. Emul. St. Brieuc 31. pi 2. / 21. 1879. Schmidt, Atlas pi 160. f. 6-8. 



1890. 



dOp. cit. pL 160. f. 3-5. 



eSv. Vet. Akad- Handl. 18^': 12. pi 3,f. 37. 1881* 



31713— VOL 10, PT 5—07 10 



