.MANN DIATOMS "I THE ALBATROSS VOYAGES. 385 



Surirella fastuosa Ehrenb. Ber. Akad. Wise. Berl. 1840: 214. L841; Phys. Abh. 

 Akad. Wiss. Berl. 1841: 388. pi 2. TV.f.7. VI. f. 14, pi 3. VII. f. 11 12. L843. 

 Kiit/.. Bacill. 62. pi 28./. 19a d. L844. \\. Smith, Ann. Mag. Nat. Hist. II. 7: 

 Ki. pl.S.f.S. L851; Synop. Brit. Diat. 1: 32. pl.9.f.66. L853. Greg. Q 

 Journ. Micr. Sci. 3: K). pi ,./. 12. L855. Moeb. Diat. taf. pZ.5./ / pZ. ...../'./. 



|s!M). Pritch. Hist. Inf us. ed. I. 797. 1861. Etabh. Fl. Eur. Alg. 1: 58. 1864. Jan. 

 & Etabh. in Etabh. Beitr. 1: L3. pi 1. f. 15. L863. Jan. Abh. Schles. Ge 

 Vaterl. Cult. 1862 2 : L4. pi lA.f. 17. L862. Grun. Verh. Zool. Bot. Ges. Wien 

 12: 161. pi •>./. 11 (/. /f doubtful). L862. Grev. Trans. Micr. Soc. Lond. n. -. 10: 

 is. pl.S.f. 1. L862. Van Heur. Synop. l vs . pi 73. f 18. L881; Treat. Diat. 372. 

 pi 13.f.588 584. L896. Pant. Beitr. Bacill. Ung. 2: 71. 1889; 3: pi. 31. J 

 L893. Schmidt, A.tlas pZ. .;./. / ?, 5, />/. •-../'. .;. : 15, pi. 19. f. l. 8, 12, 13, pi 

 .'ii. /'. /. L875; pl.56.f. 7. 1877; pl.206.f.l 11,21.1897. Truan, Anal. Soc. Espan. 

 Hist.Nat. 14: 76. /;/. 5./. // 12. L885. Wolle, Diat. N.A.pl.55.f.5 nol /</..,.'. 

 /. ?0). L890. 

 Surirella lata W. Smith ; Synop. Brit. Dun. 1: 31. pi. 9./. 61. L853. Van Heur. 

 Synop. L88.pZ. ;/./. 77. L881. Etabh. Fl. Eur. Alg. 1: 59. L864. Schmidt, Atlas 

 pZ. 5./. /. is: l: Jahresb. Komm. Deut. Meere 2: pi .;./'. 9 (3 fig. . L874. 

 Surirella hohenackerii Etabh. Hedwigia 1: L03. pi IS.f. 2. L859. 

 Surirella cuneata Schmidt, Alias pi .;./. / 2. 1S75. 

 Suriraya fastuosa Ehrenb.; De Toni, Syll. Alg. 2: 582 L892. 



This diatom is one of the commonesl of the genus; a1 the same time i1 is \ ery vari- 

 able. In consequence of both facts ii runs gradually into a number of other species, 

 so thai the lisl of synonyms given above could be easily increased. I have confined 

 myself to evidenl cases of identity, as the specific lines here are mosl difficull to fix 



with exactness." 



Found at stations 2807, 2808, 2823, 2923, 2929, 2635B 3688H, Galapagos [slands to 

 central California and Okhotsk Sea. 



Surirella formosa Cleve, Bih. Sv. Vet. Akad. Bandl. 18: 17. pi ;./.,''. L881. 

 Schmidt, Atlas pi 205. f. 8. L897. 



Suriraya formosa Cleve; De Toni, Syll. Alg. 2: 584. L892. 



My specimens, which are exceedingly abundanl in the one dredging mentioned, 

 differ from Cleve's figure and description in some important particulars. The mark- 

 ings are much more elaborate than he indicates, which may have been due to inade- 

 quate material, as he says his form is "very rare." The border of m\ specimens is 

 much narrower and more strongly ribbed and is without the heads. The branching 

 of the forked tips on the inner side of the row of processes with swollen cud- is more 

 pronounced. There are other minor differences hut not sufficient to indicate a new 

 species. 'The greal points of resemblance are the swollen processes and the ring of 

 beads in the otherwise hyalim central area. 



Found at station 2807, Galapagos Eslands. 

 Surirella patens Schmidt. Atlas pi. 4. f 16 17. L875; pi 56. f. 10-11. L877. Jan. 

 Diat. Gaz. Exped. pi 21. f. 28 29. 



Suriraya patens Schmidt; De Toni, Syll. Alg. 2: 597. L892. 



This diatom is of the S. fastuosa type, bu1 hardly near enough to he united. To 

 the above reference- mighl he added the unnamed figures of Schmidl and Janisch.6 



Found at station L'SOT. Galapagos Islands. 



Surirella robusta Ehrenb. Ber. Akad. Wiss. Berl. 1840: 215. L841; Mikrog. pi 

 tSA.f. 48; pi. 1: . T.f. 14; II. f. la b (pi 11. f 81 and pi 16. 111. 1. 31 indetermi- 

 nate). L854. Kiit/.. Bacill.61. L844. Pritch. Bist. fnfus. ed. 3. 795. L861. Schn 



"('!'. Schmidt. Atlas pi. I 5. i s 7">. for illustration of this difficulty. 



b Schmidt, Atlas pi 56. f. 12. L876. .Ian. Dial. Gaz. Exped. pi U.f.SO. 



