\l\NN DIATOMS OF THE ALBATROSS VOYAi L >( .>."> 



inconstant. Though the union of sculptum and punctatum lb desirable, the former 

 Dame should be preferred to the latter, which De Toni selects, h is probable / 

 culum Bright, belongs here, though the miserable l Ilt' i r« • and incomplete description 

 make this a little uncertain. Bu1 this is doI /'. reticulum Ehrenb. a !)•• Toni quotes 

 Brightwell's namebul does not identify it with Ehrenberg. '/'. brovmeanum G 

 which Boyer adds to the above list, is nol at all the same. Greville saye of il ''angles 

 rounded with obscure pseudonodules." These last can nol possibly be the rii 

 Shadbolt's form, those being ai the center, bul musl be processes ai the apices. The 

 center of Greville's figure is clearly drawn and withoul trace of the rings of '/'. sculptum. 

 I think Schmidt's plate 79, figures 1 1 and L6, belong here, a pentagonal specimen from 

 Station 2920B being almosl identical with figure II as well as with Van Heurck's 

 Synopsis, plate L09, figure 6. 



Found ai stations 2920H, 3513, 3526, 3611, 3604H, 3698, 3712H, Eawaiian Islands, 

 Honshu I-land. Japan, and Okhotsk Sea. 



Trigonium striolatum Ehrenb. Maim. 



T iceratium striolatum Ehrenb. Phys. Abh. Akad. Wiss. Berl. 1839: L59. pi. | 

 L841. Bright. Quart. Journ. Micr. Sci. n. b. 1: 250. pi .. f. 10. L853. Moeb. 

 Diat.-taf. pi /../'. 10. L890 De Toni, Syll. Alg. 2: 943. L894. nol Eloper, Ti 

 Micr. Soc. Lond. n. b. 2: 74. pi 6.f. S. L854. 



Roper is righl <' in claiming thai his idea of this diatom of Ehrenberg and Brightwell's 

 idea are nol the Bame. A comparison of the original figure and a reading of Ehren- 

 berg's diagnosis will show thai Brightwell is correct. There is ueither mention nor 

 sign in the figures of any horn-like processes in Ehrenberg's species. At any rate the 

 specimens found by me are wholly destitute of such processes, though the apii • 

 produced; and as they agree perfectly with what is given in Ehrenberg, Kiitzing, and 

 Brightwell, I look upon them as well marked and distind from Roper's form. To 

 unite all these with Biddulphia rhombus Ehrenb. W. Smith, as is done by Van Beurck<* 

 is out of the question. Roper's form is probably the same as T. met '< -■ Bright.* 



Found at Btation 3361H, Bering Sea. 



Trigonium tabellarium Bright. Mann. 



T ia atium tabellarium Bright. Quart. Journ. Micr. Sci. 4: 275. pi 17. f. 15. l s ">o. 

 Moeb. Diat.-taf. pi 9.f. 15. 1890. Schmidt. Atlas pi 77. f. i : (/. 3-5 according 

 to (dun. . L882. Jan. Dim. Gaz. Exped. pi. 9.f. 7. De Toni, Syll. Alg. 2: 

 1894. Pritch. Hist. Enfus. ed. 4. 854. Cleve, Bin. Sv. Vet. Akad. Handl. 5 : 17. 

 pi .->./. 31. 1878. 



atium johnsoni Half- in Pritch. Hist. Infus. ed. l. x -">l. l s «d ?. 

 i atium venulosum Grev. Trans. Micr. Soc. Lond.n.s. 12: no. pi is. /'. ./. L864. 

 Moeb. Diat.-taf. pi 61. f. 21. L890. Schmidt, Atlas pi 77. f. 6 9. L882; pi : 

 .;. L888 nol Gr. & St. Journ. Quek. Micr. (dud II. 2: 327. pi 



eratium i><iV'><1>hii <dw. Trans. Micr. Soc. Lond. n. b. 12: 84. pi 11. f. :. L864. 

 Moeb. Diat.-taf. pi 59. f. 7. 1890. De Toni, Syll. Alg. 2: 938. L8 

 /' Iceratium brevinervum Grev. Trans. Micr. Soc. Lond. n. s. 13: KM. pl.9.J 

 1865. Moeb. Diat.-taf. pi I 



"ti. Ber. Akad. Wiss. Berl. 1844: 38. L845; Mikrog. pi 18. f. 50, pl.SS. XVI 

 1854. 



''Tran-. Micr. Soc. Lond. n. -. 9: 72. />l. 8.f. 16. L861. 



cTrans. Micr. Soc. Lond. 2: 74. L854. 



'/Van Heur. Synop. pi 99. f. t S. L881. 



' Quart. Journ. Micr. Sci. 1: 251. pi .../' 15. L853, and ci. with Brightwell's 

 of this species mi the -aim- plate. 



31713- vol i". i'i :. -n7 o 



