h... r - T,-- L., , I I ^i ' -^ ' n .- , 



MANX— DIATOMS OF THK ALBATKOSri VOYAGES. 331 



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Cocconeis grevillei \V. SauUi, Syuop. IJiii. Dial. 1: 22, pi .i.f. .;:>. 1853. llabh. I'l. 

 Eur. Alg. 1: 102. iSOL Jan. Ahh. ScUl. Gos. Vatrrl. ('uIl. 1862 -: 18. ;)?. .>J, 

 / 10. 18G2, IT. !.. Smidi, Sp. Dial. Typ. no. 72. 1874. Prit(*h. Hist, Infus. cd. 4. 

 870. 1801. 



CampyUmeis greviUn (Iniii. (^rr. del. in Fcnzl, lloLse Xovara J5ut. 1: 10, 08. 1870. 

 Jonrn. Roy. Micr. Sue. 1: 245. pL Af. /. .;. 1878. Pi'til, FonJ.s de la :\I.t3: 

 171. /j/. ^. / o. 1877. Van Hour. Syiu^p. 134. pi. 28. f. 8-12. 1881. Dr Toni, 

 Syll. Alg. 2: 439. 1801. Giun. Vcrli. /<..>!. liot. Ges. Wk^u 12: 430. 1802. ' 



Cattfpi/loacis wyus Grun. Verb. Zool. Hot. (ins. Wion 12: 429. pL 10. J, 9. 18(12. 

 Vi'iv/A, Reise Xt.vara Hot. 1: 10. 1870, Van Hour. Synop. 134. pL 28. f. 15--]r;, 

 1881. De Tuui, Syll. Alg. 2: 441. ISOL. Truan, Anal. Sue. r:8pan. lli.l. Nat. 

 13: 303. pL 10. f. 22-2.1. 1884. 



DeToni" gives separate rank to (\(jin\lhi \\ . Smith, (\ r^^/a/Zi- Grev. and (\ an/us 

 Grun. undiT thegenorichcad Campyloncis. (d(^ve, in above cLt.aion, unites ihr thn-e 

 under Campylonch (jrcviUci (W. Smith; (Irun., tluL^ followin^^ Grunuw's analysis.^ 

 1 do not tlnnk C gnvilln wnd C. argus can 1)(^ )u4d separat(\ Differences exist, but 

 they are slight and varialde, having chiefly (o do with the tln< kening.s on (he internal 

 cralicular pLitets. Rut llu^ union of GrevilleV f\ regalis willi these is too radical. 

 A comparison of the pu1)HsIied fignrt^^ does not Awvr \\\c strong contrast that is to be 

 seen in specimeTis of tlu^se two spe(^ies. The craticular plates and the inferi(M''val\ es 

 are ntn^tT closely alike; but the with'st di ff<i'(^nce is to be sovn in the superior plates, 

 wliicli in (\ greiillei have l>eading actually nr approximately alike in the nuddle and 

 outer portions, whileC. r<v/a/i\'hasaii oval cenlral area marked with bars of fine puncia, 

 Avliile the outer area, se[)arated from tliis cenlral i>ojtion, i.s marked by very larg(0)eads. 

 Two spcH-imens affordetl l)y II. L. Sniitli, types no. 72 and lu.. 035, show this confra.^t 

 fun ly. tlieformer of (\ grvvilki from Granvilh\ I^-ance, and tlie latter of C. regaUs fmni 

 Gajx' of (iood Hope. I tliereforc^ take tin- jxisition of Van Tleur^k, Dc Toni, and others 

 in classifying these species sei)arately. 



Found at stations 2807, 3008, Gah^pagt^s Islands and Honshu Island, Japan. 



Ooccone:;s pellucida Grun. in Rabli. lieiir. 1: 2k pi. G. f. //. 1862; in h'en/l, 

 R(4se XovaraRot. 1: 12. 1870, not C prlhirldtt Grun. Verb. Zor.l, Hot. Ges. Wi^n 



13: 145. pi. 14. f. (L lSt;:k which is (\ pHCKdomarginala Greg. Schmidi, Atlas 



pi. 191. J. 48, pi. UKL f. 5-8, pL lU.j.f. !, ir,^ p], /a}./ l~6. 1894. Grun. in 



Fenzl, R(dse Xovara Rot. 1: !)8. pi. I.f, 7-8. 1870. l)e Toni, Syll. Alg. 2: 450, 



LSOl. Cleve,Sv. V<d.Akad. HandL 26-: 178. 1894. Rant. Reitr. BaciU. Vm-.S: 

 pi. 5'J./. 46.5. 1893. 



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Cocconch cnrvi-rolunda Temp. & Hrun. Mem. Soc. Rhys, et Hist. Xat. Geneva 30^: 



32. pi 8.f. 6, 1889. Schmidt, Atlas pi l!f5.f. 10-19. bSl)4. 

 Cocconeis lungacscUi, Rant. Reitr. Racill. Uug. 3: pi 41. f. 564. 1893, 

 Cocconeis noiabUU Rant. Beitr. F>acill. Rng. 3: pi 35. f. 492. 1893. 

 focconcis clrcinnnncla Scjimidl, Alias pi 195. f. 7-9. 1S94. 



The doubt of Tc^nipere and V,nin of their (\ cuni-roianda being anything more than 

 a variety of this speci<\s, indicated by (lieir bracketing th<' laller n^iuu^ with their own, 

 is, I think, well founded. Indeed, I lia\<' met with all j)o.ssibh^ varieties ul tln^se 

 extrerntdy <4ose forms, and \ amconvincc'd thcvsliould bo unil(^<l. So also ret^ardin* 



r 



(\ I lrrf(uu'uuia Sc]mii<lK lis radially arranged markings aitd its generallv strai^dit 

 raph*' are n»jt snfFici*^nl lo separate it fnan the aliove. It oct urs at stations 331'; and 

 3004. I excluth' C. hcftrolflra TIantzs(4K and tlu^ variety of il regarded liy Janisch 

 as a species C. JlcxclJad thougli l>oth Gruufiw and T)e Toni are im]>ressed with thrir 



"DeToni, Syll. Alg. 2: 439 441. 1S9L 



^FeiizL Reise X'ovara VhA. 1: 10, lS7r). 

 c Ralih. Reitr, 1: 21. pi (i.f. Ul mvl, 

 <f Ilal>h. lioitr. 1: 7. pi 1. pi 11. lS(iL\ 



