288 CONTRIBUTIONS PROM Mil NATIONAL HERBARIUM. 



Ehrenb. Phys. \Ui. Ikad. Wiss. Berl. 181 I , ' 6. II ■ 



\ I'll!- ill.. Phys. \Mi. Akad. Wiss B< L872 390. pi. 6. 11. f. 

 I 



m >p. 195. 1885. I ><■ Toni, Sj 11. Al 1894. 



<<» Castr Rep. Voy. Chall. Bot. 2: 83. pi. 19. f. :. pi. P9. f. /. 



. Lg 



n Castr. Rep. Voj Chall. B pi. 15. f. >. \ L886. 



The very appropriate specific name of Laud' r musl give place to thai ol Shadbolt. 

 Castracane builds 1 1 1 « - ~~| »« ■« i t i« • character ol his spirillum on the Bpirally wound setae, 

 a quality not p< ys, by 1 1 * * - above. Tlii- i- quite contrary i" the facte. 



Hi- <.\>. ii figuree ana Laud., ~li<>\\ this Bpiral quality. Or ii" his contention 



i~ thai these are Bimply undulate, while his form has Betae with a Bpirally wound 

 thickening, thia also is incorrect. C. furcotus Bhows this in many specimens m< >~i 

 plainly. Ii may be added thai exacl duplicates of his l> breviapinum are found at 

 station 3698, both having and destitute of the Bpiral ornamentation of the Betae. 



\- this is the Bpecies to which belong mosl or all of the forms named generically 



Actiniscus by Ehrenberg, ii may be well to here add to the reasons advanced by 



muli'i- the presenl genus caption for rejecting Ehrenberg's name a quotation from Van 

 I l.i nek'- bearing on this point. He says: " Note. Les formes pour lesquelles Ehren- 

 berg a constitue" le genre Actiniscus, n'etaienl pas des Diatomees el les auteurs subs£- 

 quente qui onl 6cri1 Bur ces formes n'auraienl pas du les admettre dans leur classifica- 

 tion. Ehrenberg a rapporte* le genre Bacteriastrum a son genre Actiniscus mais Bans 

 avoir aucune raison plausible el il a continue a agir ansi j usque dans son dernier 

 ouvrage'] Forteetzung der Mikr. Studien, L875. Toutes les formes de Bacteriastrum 

 doivenl Itre ramen6es au genre Chaetoceros." 



Found ai Btations 2860, 3091, 3346, 3698, 3712H, off British Columbia to Oregon and 

 Kurile chain to Honshu Island, Japan. 



Chaetoceros sp.? 



Diclodia mamillana L. W. Bailey, Bost. Jour. Nat. Hist. 7: 339. pi. i 1862. 



My specimens agree with figure44 in the above, being whal Bailey calls var. B. 

 Found al stations 4013H, 4516H, off Honshu Island, Japan, and Lower California. 



Chaetoceros sp. ? 

 Goniothecium odontella Ehrenb. Ber.Akad. Wiss. Berl. 1844: 82. L845; Mikrog. pi. 



18. f. 94, pi S3. XIII. J. IS /;. pi S3. XV. f. 16. L854. Pritch. Hist. Infus. ed. 



I 864. pi 6.f. :■'. L861. Bright. Quart. Journ. Micr. Sci. 4: L06. pi ; 



1856. Moeb. Diat.-taf. pi L890. De Toni, Syll. Alg. 2: 1009. L894. 



Win. Verh. Russ. Mm. Gesell. II. 22: 25. pi 7. ./'. : 8. L886. Van Heur. Synop. 



pi 105. f. II 12. L881. 

 Ehrenberg found this form, together with eighl others named by him, in the fossil 

 deposU of Richmond, Virginia. Although this particular one has qo1 bo Ear been met 

 will, in a living state, -i\ "i' tin' other eighl have been so observed. It is therefore 

 reasonable to assume thai these peculiar structures are inner casings of certain Chae- 

 toceros valves, iIh- "liter spine-bearing valves of which have fallen away. Bui it 

 should be remembered thai quite dissimilar specimens of Goniothecium may !»'• 

 eventually found t" i><'l<>n<: to ilm -aim' Bpeciee of Chaetoceros. Tin-' forms 

 frequently mel with and are bo widely illustrated in diatom literature thai I have 

 thoughl it advantageous to give the above citations. 

 Found ai Btation 1029H, Bering Sea. 



a Castr. <>|>. < ii. /</. 14. f. -'■ pi "■'■/■ •-'• 

 i> Van Heur. Synop. L95. L885. 



