■ ■ 



^^;i.,T^ — DIATOMS OF THE ALBATROSS VOYAGES, 381 



It is probable tluiL llu; other forms of Gninow's N. marginulata also belong to this 

 sp(H'i(\^. 1I(^ .^ays, ri^garding its relation to .V, plana, ^^Vehnlich, ahor niit breiterc^m, 

 HtetH l>i.s 7Aideii Sehadeuunden reichendnu fast ganz glatteni Mittelraumo. '' The 

 sp(M'iin.'n found by uh' has the characteristics of both; it has the practically hyaline 

 central si)ace of Grunow's form instead of the irregularly pum-tate space of Smith's 

 typ<% 1>ut, as in The latter, stopping short of the ai)ices instead of extending to these, 

 as Gmiiow points out. There is, therefore, no .h.ubt of tins variety of N. marginulata 

 bring the same species as .V. pJana; and, as abvady suggested, it miglu be well to 

 add Ihc other varieties also. H. L. Smilirs lyp<^ no. :?(i3 is misnanu'd. It is a small 

 vari(^ty t.f N. dubla \\\ Smith as figured by that author and as shown in IL L. Suiith\s 



typ(* no. 341, 



Found at station 2823, Gulf of California. 



Nitzschia punctata i\\ . Smith) Grun. in Tlcve & Grun. Sv. Vet. Akad. Handl. 17-: 

 G8. 1880. Van Ili-ur. Synop. 171. j>L 67, f. 2-3. 1881; Treat Diat. 384, /. iJJ, 

 /)?. 15. /. 491-492. LSOG. De Toui, SylL Alg. 2: 49G 1892 (not Baih)- 

 TnjbJvmeUa punctata \\\ Smith, Synop. Brit. Diat. 1: 36. pJ. JO. J. 7(ki' (not /. 70a), 



pi. 30. J. 261. 1853. Kabli. Fl. Eur. Alg. 1: 148. 18G4. 



Tlie specimens found l)y me have markings n(^arly as coarse as those of N. granulata 



Grun./' they, however, have the d(^ci<b'd marginal loculi on llie dorsal side of the 



valve and are ch^arly in all respeets coarsely mark<^d examph^s of TV. punctata. The 



diatom given this name 1)y L. W. IJaih^y'^ is N. brighhrelUi Kilton and has no relation 



with till' abovi'. 



Foutul at station 3(i()S, olT Honshu Island, Japan, 



Nitzschia scahra Ch^ve in Xordensk. Vega Kxprnl. 3: 4S0. pi 3S. f. 73a-h. 1883, 



DeToni, Svll. Alg. 2: 532. 1892, 



My spedinen u-recs willi the above pcrfrdly, except tlnit. tlie piinela are wel widiT 

 apart. It has the peculiar "shagreen-like appearanre" refcrrrd U, by ("leve. It is 

 0. IS:^ iniu. long. I de not favi.r mnlhv^ llu.s wilh .V. sigrna W . Siiiilh, although <"leve 

 braekets tliat nauu' wilh a (iue.stiun mark. 



Found at station ?,('>'M',, off Honshu Island, Tai)an. 



Nitzschia Sigma (Kulz.) W. Smith, Synop. Brit. Biat. 1: ;W. pi l.i. J. 108. Prileli. 

 Hist. Infus. ed.4. 7S1. pi. 4- /■ -'1 ■ l«<iJ. Ihdiii. Fl. Eur. Alg. 1: 15(i. lS(i4. (irun. 

 .Tourn. Roy. :Mi<r. Soe. 2: GST, 1879. Brun, Diat. Alp. 105. pi. r>.J. 2.'i. 1880. H. L. 

 Smith, Sp. Dial. Tvp. Jio. 'MM. 1871. Van Hear. Synop. pi. 6',5. /. 7-/?, pi. (><>. f. 

 1^9. 1881; Treat. Diat. :',9(). pi. 16. f. /i-H 5-i5. 189(1. ("leve in Nordensk. Vega 

 Exped, 3: 480, 500. 1883. Lewis, Froe. Aead. Phila. 1861: 71. 1802. De Toni, 



Syll. Alg. 2: 530. 1892. 

 Syncdra ? sigma Kiltz. Bacill. 07. pi SO.f. Li. 1844 ? 

 Am phi pleura rigida Kiilz. Bacill. 104. pi. 4.f. SO. 1844? 

 Amphipkura nlgmoidca W. Smith, Synop. Brit. Diat. 1: 45. pi 15. f. I'iH. 1851 



(not N. sigmoidca (Nitzsch) W. Smith). 

 AiL.schiu anguiUula Si hum. Schrift. Phys. r)kon. Ges. Konigsb. 5: 53. pi 1. /. 12. 



lt;i;7; 



N. signm angvilhda Grun. in Schneider, I'.eitr. Kennt. Kauk. 1 M). 1878. 



Nitzschia sigmoideu II. L, Smith, Sp. Diat. Typ. no. 3fi9. 1874. 



NitzscJda hahirshairii Feb.; H. L. Smith, Sp. Dial. Typ. no. IMC. 1874. 



N. sigvia habir^haaii Van Heur. Synop. pi Gil. J. 4- 1881. 



Nitzschia (sigma var. V) vnlida Cleve <k Grun. Bih. Sv. V(4.. Akad. Handl. 5^: 12. 



pi 3. J. 19. 1878. Van Ileur. Syno]), pi 6\5. /. 4-5. 1881. De Toni, Syll. Alg. 2: 



532. 1892. 



" Li>e. <'il. 



Mlosl. Journ. Nat. Ilisl. 7: 311. pi <*?./. 7(1. 18(;2. 



