"■¥ V 



MAXN 



DIATOMR OF THE ALBATROSS VOYAGES. 



321 



Two references found in JChrenberg's works f^hoiild l>e excluded lu^e." In liotli of 

 these cases Elm^nherg expresses doubt by an int(^rr()gation point. Crunow's selection 

 of the sp<K'ifie name parallda over that of slricla, copied by De Toni, is inadiniH^ible. 



Found at station 2807, Galapuj^os Islands. 



TESSELLA Ehrenb. 



TesscUa Ehrenb. Infus. 202. 



/ 



i . 



ISHS. In i)art (exclusive of Striatella 



forms, e. g. Tesella arciiala Ehrenb.). Ilalfs, Ann. 'Slag. Nat. Hist. 12: 104. pL 



2.f, L 1843 (not Ralfs in Pritcb. Hist. Infus. ed. 4. 804. pi 8,f, r>; not Kfitz. 



nor O'Meara). 

 Sinatdla C. Ag. in part; Kalfs, Ann. Mag. Nat. Hist. 11: 455. pL 9./, G, 1843. 

 Rhahdoncma Kutz, BacilL 12G. pi 21. 11. f. 4, pi IS, /. G. 1844. W. Smith, Synop. 



Brit. Diat. 2: 82. pi 3S. 1853. Rabb. Eb Eur. Alg. 1: 305. JSlM. Prilch. Hist. 



Lifus. ed. 4. 804. 1S(;1. 



/■ 



ISOn. De Toni, Syll. Alg. 2: 760. 1802. Ornn. Verh. Zool. Bot. Ges. Wicn 

 12: 422. 1862. 



This genus was c<mstitutpd in 1838, thougli th<^ name appears in literature^ in 1837. & 

 Afi defined and figured l)y Ehr(^nl)(Tg it is truly synonymous with Kiitzing's Rhab- 

 donema. Its type species, T. catnia, isidentical \vi(h /?. arcualinn Ktitz., andso recog- 

 nized by KiitziTig; whih^ Kiitzing's type species, 11 minidam, is recognized by him to 

 be T. catena Ralfs (not Elnn-nb.) and its citation quoted. It is true Hiat Eluenberg 

 pr()bal)ly included a species of Striatella C. Ag. in bis genus Tessella, namely^ T. inter- 

 Tvpia\^ but he recognizes Striatelb 0. Ag. as a distinct genus, gives it with diagnosis 

 and ligures, and there1>y limits by exclusion bis own genus Tessella. A reading of his 

 discussion of Striatella^ will make it evident thai his Tessella can iiot be the same. 

 All of the three species named by Kiitzing in his new genus Rhabdonema w^ere pre- 

 viously named and figured as species of Tessella and are so recognized by him. He 

 therefore should have emended the genus of Elne{d)erg rather than have BUi>erseded it 

 with Rhabdonema. He does, it is true, give Trssella as a separate genus, but it fails 

 to correspon<l 1o the original and the single species he mentions is a Striatella. Under 

 these circumstances Ehrtmbc^rg'a name shotild be restored and simply omended by 

 excluf^ion of frustules having interrupted septa. 



Tessella adriatica fKiitz.) Mann. 



Rhahdoncvm adriaficvm Kiitz. Hacill 120. pi IS J, 7. 1844; Sp. Alg. 115. 1849. Pritch. 

 Hist. Infus. ed. 4. 805. pllS.f. 27. 1801. AV. Smith, Synop. Bril. Dial. 2: 35. pi 

 38. f. 305 5, a^ b'. 185G. Grun. Verh, Zoob Bot. Ges. Wien 12: 424. 1862. 

 Jan. & Rabh. in Rabh. Beitr. 1: 11. pi S.f. 20. 1SG3. Rabli. Fl. Eur. Alg. 1: 306. 

 18G4. O'Meara, Proc. Roy. Irish Acad. II. 2: 310. 1875. II. E. Smith, Sp. Diat. 

 T>T). no. 432. 1874. Van Heur. Synop. IGG. pi 54^ f. 11-lS. 1881. Truan, Anal. 

 Soc. Espan. Hist. Nat. 14: G8. pi S. f. 15. 1885. De Toni, Syll. Alg. 2: 764 



181)0. Schmidt, Atlas pi 217. / 17-29, 



1802. Wolh 



Diat. N. A. pi, 51. f. 2-4. 



1895; pi 221. f. 14- 1896. 

 TrssfUa sp.? F.obarz. Liiuiaea 14: 270. pi 4.f. 2. 1840, according to Kiitzing and De 

 Toni. 



Eound at stations 2835, 3G08IT, 3712H, off Lowor California and in Okiiolsk Sea. 



« Phys. Abb. Akad. Wi.ss. Berl. 1847: 448. pi 2. Jll.f. 22. 1849; probably a spe- 



cies of Fragillaria; op. cit. 1870: 72, pi 1. I. f. 43 a-d. 1871; probably a Xavicula. 

 b Phys. Abh. Akad. Wiss, Berl. 1835: 173. 1837. 

 c Ehrenb. Infus. 202. 1838. 

 d Op. cit. 229-230. 



