

P 



MANN — DIATOMS OF THE ALBATROSS VOYAGES. 287 



Tli(^ inlrresling furni ('<mstitiiting the gcinis remgallia Sclinlt, does, as its author 

 says, hint of Iransition hrtwoonthe im-srat goiuis mid KliiztK^olfiiia EhrenlK, as it.s 

 valvt's arc true rhactoccro^ typ<\ while Uk^ zonal part shows the plicate bands of 

 Rhizosoh^nia, Wnt this latter portion, the zone, is liabli^ to .show various changes in 

 many genera^' and is hardly of enough iniportanct^ to separate this otherwise normal 

 Chaetoccro^^ from the geniits.^ 



The following genera I have not included in tlu^ above. Some; of them are plainly 

 dij^tinet from it, as Skeletonema Grev. (not Gruii.) and Strangulonema Grev. Others, 

 like SyringidiuMi and rierotheca, though showing eonsid(Tal)h^ resemblance to the 

 internal i-ases o[ Chaetoceros, are as yet too imperfectly understood to warrant any 

 safe conclusion. See Syringidium Ehrc^nb.,^ Om})hal()th(H'a Ehrenb.,^ Pyxilla 

 Grcv-j« Pterotheca Grun.,/ Stephanogonia Ehrenh.,£7 §k(detonema Grev.,^ Strangulo- 

 nema Grev., i Xanthiopyxis l^lu-enb.^i and Gorelhron C'astr.^* 



Chaetoceros coarctatus Laud. Trans, ^licr. Soe. Eoiul. n. s. 12: 79. pL 8, f, 6. 18C4. 

 Cleve, Hih. Sv. Vet. Akad. Ilandl. 1": 9. pL 2. f. 10. 1871?. De Toni, Syll. Alg. 

 2: 9%. 1894, 



This ks variously spieled roardatus hy De Tt)ni, nmniala l>y Lauder, coarciatum by 

 Cleve, The first is i-orrect. 



Found at station 402911, Tiering Sea. 



Chaetoceros didynius Ehrenl). Ber. Akad. Wiss. Jierl. 1845:75. 184G; Mikrog. pi. 



S5A. XVII. j\ J, pi. IS. f.4- 1854. Bright. Quart. Journ. Micr. Sci.4: 107. ^i^?. 7, 



/.3-7, 185(J. Jan. Abb. Scliles Ges. Vaterl. Cult. 1862: pi JA.f. 21, SO, 32, 1862. 



Pritch. liisL lufus. ed. 4. 8G2. ISGl. Griff. & Ilenf, Mi(!r. Diet. ed. 3. pi 4I, 



f. 47, 1875. 



My ;^pecimen is a somewhat doubtful example of the above, the setae bemg 

 abnormal. 



Found at station 402911, Bering Sea. 



Chaetoceros furcatus (^Shadb.) Mann. 



Bacteriastnfvi fitrcatvm Shadb. Trans. Micr. So(\ Lond. n. s. 2: 14. pi l.f. 1, 1854. 



Mocb. Diat.-taf. pi S. /. /. 1890. Pritch. Hist. Infus. ed. 4. 8G3. pi 6.f. 26. 18GL 

 Badcnaslntm oirrafjfnt Shadb. Trans. ]\Ticr, Soe. Lond. n. s. 2: 14. pi l.f. 2. 1854. 



Moeb. Diat.-taf. pi S.f. 2. 1890. Griff, it Henf. :Micr. Diet. ed. 3. pi 43. J. IS. 



1875, 

 Adlniscus svxjurcalas Ehrenb. V\\y^, Abh, AkaiL WIss. lierl. 1854: 237. 1855; 



Mikrog. pi S5B, IV J. 15. 1854. 

 Baderiasinmi xarians Laud. Trans. Micr. fioc. T^ond. n. s. 12: 8. pi S.f. 1-6. 18G4. 



H. L. Smith, Sp. Diat. Typ. no. 57. 1874; Jour. Quek. >[icr. Clul) II. 3: 42. pi 4. 



f. 2. 1887. Van TIeur. Synop. pi 80 J. 3-5. 188L Mod). Diat.-taf. pi 56. f, 1-6, 



1890. Castr. Rep. Vc.y. OhalL B0I, 2: 82, 84. pi 14.J. 2, pi 19./. S, pi 23. J. 1. 



1886. 



«Cf. Bahner &. Kelley, Bruc. Acad. Bhila. 1900: 4G5-479. 1900. 



^Cf, Van Ileurck, Treat. Diat. 419./. 137. 189G, 



c B(T. Akad. Wiss. Berl. 1845: 357, 3G5. 184(i; Mikrog. pi S5A, IX. /. 11. 1854. 



d Ehrenb. :\likrog. 12G. pi 35A, IX. J. 4- 1854. 



e Trans. Micr. Soc. Lond. n. s. 13: 1. pi /./. 5. I8G5. 



/Van IL'ur. Synop. pi S3 bis.f. 10-11. 188 L 



fi^Ber. Akad. Wiss. lieil. 1844: 204, 271. 1845. 



■ 



'i Trans. Micr. Soc. Lond. n. s. 13: 43. pi 5.f. 1. 1865. 



iTrans. Micr. Roe. Lond. n. s. 13: 43. pi 5.f. 2. 1865. 



iBer. Akad. Wiss. Berl. 1844: 264, 273. 1845; Mikrog. pi 33, XVII. f. 17. 



^•Castr. Rep. Voy. Ohall. Bot. 2: 85. pi, 21. f. 3-6, 12, 14-15. bS8G. 



