MAXN DIATO.MS OF TPIE ALHATKOSS VOYAGES. 329 



of this pperio>;, as v.ell as their l^reaking up uito fine [nmcta near their uiii(»n with 

 the iiuir-^an. 



Foiiiul at station 2SlcS. south (jf Ahiska Peiiinsiila. 



Cocconeis costata (iro^j;. Quart. Tourn. Micr. Sci. 3: IJH. pi, 4. f, 10, 1855. Trans. 

 .Micr. Soc. Lond. n. s. 5: 6S. pi. 1 . f. 27. 1857. Mool). Diat.-taf. pi 5. f. 10, pj, 

 12. f, 27. 1890. Rabli. V\. Eur. A1-. 1: 10-1. 1864. Jan. Al>h. Sclllos. Gos. 

 Vaterh Cult. 1862-: IS. pi I A. f, 36. 1SG2. f love in Xurdeusk. Ve-a Expod. 3: 

 460. 1883. Van Ileur. Synop. pi 30. f. 11 17, ISSl. Pritch. Hist. Tnfus. ed. 4. 

 871. 18GL Cleve, Sv. Vet. Akad. Ilandl. 27^: IS2. 1895. 



Sarimla rptarnerensis Grun, Wy\\. Zool. Pot. Ges. Wion 12: 456. pi U.f. 10. 18f)2. 



Jhiphonns scfUrUoidfS Grun. Vorh. Zool. Pot. Gos. Wion 12: 383. pi ^.f. 34. 1862. 



lUiphonds archcri O'Meara, Quart. .Fourn. Oilier. Sci. n. s. 7: 247. pi 7./. /.?. 1867, 

 iMoeb, Diat.-taf. pi 77, f. 12. 1890. 



Cocconns impcrairix ScliTuidt, Atlas pi 189. f. 10 IT), 1801. 

 Cocconns janischii Schtnidt, Alias pi 189, f, 33. 1894. 



Cocanuis cxlmvagans Jan.; Schnndt. Atlas pi ISD.f. 2S-32, 1894. 

 Canipi/lonris costata Lagers. Pih. Sv. Vet. Akad. llan<ll. 3'": 55. 1876. De Toni, Syll. 

 Al-r. 2: 411. 1891. 



Cam pijlomis yrevillct Grun, in Eenzl. Reiye No vara Pot. 1: 11. 187!), not Cocconeis 

 grevillei \V, Smith. 



There is not enough sinnlarity Ijetween this sptH'ies an<l C. rcgina Johns. <f or l)et\veen 

 this and Llie^ii^^antic C. hrrgtichnsin Pet. ^ to warranl uniling them, as is done hy <4e\e.c 

 The species is, however, a very varial>le one ))oth u\ size and markings. 



Found at station 3004. Uerimr Sea. 



\ - 



Cocconeis decipiens Clove, Hili. Sv. \'et. Akad. Ilandl. I'-': 14. p/. J./, tf. 1S78; X.ir- 

 densk. VPira Exped. 3: I(i;). 1S8;^. Cleve .t Cruii. Sv. Vet. Akad. iraiidl. 17-: 

 IG. 18S0. DeToni, Svll. Alt'. 2: 4.W. 1S91. 

 Cocconeis arclica (deve, liih. Sv. Vet. Aknd. Ilandl. 1'-': 11. pi 2.f. lUi (not/ 11h\. 

 1873. Cleve & Grun. Sv. Vet. Akad. Ilandl. 17-; 16. 1880. 



Cocconeis sigmoradians Tc^np. it llruti, Mem, Sue. Phys. et Hist. Xat. (iiMieva 30'': 

 33. pi S.f. 4. 1889. 



Cocconeis sigvm Pant. Pcitr. IJacill. Vug. 1: :V2. pi S.J.G8. 1886. Schini(h, Atlas 

 pi 1!J6. f, 11. 1894. Temp, ik Ikun, Mem. ^nc. Phys. et Hist. Xat. Geneva 30": 

 70. 1889. 



Cocconeis ocvh.is-catis P>run, Mem. Soc. Phys. et Hist. Xat. Geneva 31': 17. pi IS, 



/. 5. 1891. 

 Cocconeis sparsipimctata Prun, Mom. Soc. Phys. el Hist, Nat, Geneva 31': 18. pi 



18. f. S. Schnjidt, Atlas pi 106. f, 12 lo. 1894. 

 Cocconeis dirnpta fJreg. var.; A'aii Ileur. Synop. pi 29. f. 18-19. \^^\, (Me\'e; 



Schmidt, Atlas pi 106. f. 16. L894. 



Cocconeis fuJgnr Prun. ilem. Soc. Phys. et Hist, Xat. Cieneva 31^: 17. pi IS. f. 3, 

 1891. 



A discussion of the separation of this species from (.'. dir}rpia Greg., with whi(4i it is 

 united by (4eve, may l>e fmind uiulcr the latter sj>e( ies. It may he here stated that 

 the union of the above sigmoid forms agrees with DcTotu <^- in so far as that he does not 

 admit tliem under C. dirnpta, but eilher gives them separate rank or unites one or two. 

 as C, decipiens Cleve and C. arctica ( leve. 



Most of the abo\'e are found in the following dredgings; that corresponding to 



a Quart. .Tourn, Micr. Sci. 8, 13. pi /./. 12. 18G0. 

 b Miss. Sci. Cap, Horn IIG. pi 10. f. J. 1889. 

 c Pih. Sv. Vet. Akad. Ilandl. 27'=: 182. 1895. 

 f^Svlh Alg. 2: 450. 1891. 



