-. .*. ^ 



. i-T- -TV 



MANN DIATOMS OF THE ALBATROSS VOYAGES. 253 



Coscinodiscuslentiginosus Jan.; Schmidt, Atlas pZ. 58./. 11. 1878; Diat. Ciaz. Exped. 

 j)l. 4.f. 1-2, pi. 5.f. 7. Grun. Denkst-lir. Akad. Wien 48':81. 1881. Ratt. 

 Proc. Roy. Soc. Edinb. 16: 491. 1889. De Toiii, Pyll. A]g. 2: 1230. 189-L 



The extreme delicacy of the niarkiiigB, slighlly exceiitiic in arrangement, and Qn; 

 obscurity of the minute spine just within the margin, which are the distinguishing 

 characters of this species, makes identification difficult. Castracan(;'s form bearing 

 this name", seems to lack these marks, and shows nothing to warrant its assignment 



here. 



Found at station 3513, Bering Sea. 



Coscinodiscus lineatus Ehrenb. Phys. Abh. Akad. Wiss. Berl. 1838: 129. 1840; 

 1841: 371. j)l. 3. VII. f. 7,^ (not fl. 1. III.J. 20). 1843; Mikrog. pi. 18. f. 33, pi. 

 ■22. f. n a-h, pi. 35 A. XVI. f. 3, pi. 35A. XVII. J. 7. 1854. Kiitz. Bacill. 131 . pi. 

 l.f. 10. 1844. Pritch. Hist. Infus, ed. 4. 830. 1861. O'Meara, Proc. Roy. Irish 

 Acad. 11. 2: 2G4. 1875. Van Heur. Synop. 217. pi. 131. f. 3. 1881. Jan. Diat. 

 Gaz. Exped. pi. 4. /■ 8, pi. 20. f. 14- Schmidt, Atlas pi. 59. f. 26-32. 1878; 

 pi. 114. J. IS. 1888. Cleve & Moll, types no. 57, 114,_ 148, 150, 1C2, 207, 27G. 

 Rait. Proc. Roy. Soc. Edinb. 16: 472.1889. De Toni, SyR. Alg. 2: 121G. 1894. 

 WoUe, Diat. N. A. pi. 87. f. 10. 1890. 

 Coscinodiscus ehrenbcrgii O'Meai-a, Proc. Roy. Irish Acad. II. 2: 2G4. jjL 26./. 24- 



1875. 



I- 



Two specinu^iiH mounted on one slide, accompanying tliis report, show how unim- 

 portant the marginal spines in this species ar(^, one Iiaving very large spines and the 

 other barely a trace of them. The single ''pseudo-process" is present but incon^^pic- 



uous in both. 



A figure of Ehrenberg's^ frequently included Iktc is clearly that author's C. rxcen- 

 incus, and in his index to the plates^^ he gives this figure as " Coscinodiscus lineatus? 



an eccentricusT ^ 



Found at stations 2G80II, 2807, off California and Galapagos Islands. 



Coscinodiscus marginatus Ehrenb. variety (?) Plate XLIX, figure 2. 



Ehrenb. Phys. Abh. Akad. Wiss. P<>rh 1841: 142. 1843; Mikrog. pL 18. f. 44. pi 

 33. Xl/.f. IS, pi. S8B, XXII. f. 8. 1854. Cleve & Moll, types no. 114, 164, 2b5. 

 Schmidt, Atlas pi. 62. J. 1-5, .9, 11, 12, 1878, H. L. Smith, Sp. Dial. Typ. no. 

 94, 95. 1874. Katt. Proc. Roy. Soc Edinb. 16: 509. 1889. De Toni, Syll. Al 

 2: 1241. 1894 (not C. vuirginatus Ehrenb.; Kiitz. Pacill. llU.pl l.f. 7. 1844; not 

 C. mcmfmahis Ehrenb.; Jan. Abh. Schlcs. Ges. Vaterl. (\dE 1862'-: 3. ph /.4. 



/. 20. 18G2). 

 Coscinodiscus fimbriatus-Urnbatus Ehrenb.; Mikrog. pi. 19. /. 4- 1854. Schmidt, 



Atlas pi 6r>.f. S-G. 1881; pi 113. f. 2, 1888. 

 Coscinodiscus Umhatus Ehrenb.^ Per. Akad. AViss. Berl. 1840: 200. 1841; Mikrog, 



jd. 20. f. 29 a. 1854. Schmidt, Atlas pi 65. f. 7. 1881. 

 Coscmodiscffs radiatus forma heterosiicta Grun.; Pant. Beitr, Bacill, Ung. 1: 70. 



pi 20. f. 184^ 1880. 

 Cosrinofriscus radiatKS suhaequalis forma parva Pant, Beitr, Bacill. Ung. 1: pi 22. 



f. 203. 1880. 

 Coscinodiscus rohusUis Grcv.; Schmidt^ Atlas pi 62. f. 0. 1878. 

 ^ Coscinodiscus robusfus inlerwcdia Grun. Denkschr. Akad. Wien 48-: 72. 1884. 

 Coscinodiscus subcoiicaius forma major Schmidt, Atlas pi 02, f. 7. 1878. 





II I 



«Castr. Rep. Voy. Cliall. Hot. 2: 100. pi 5./ 4. ISSfl. 



f>Phys. Abh. Akad. Wi.s.s. Eerliii 1841: pi. 1. Til. /. 20. 184:5. 



t-Op. cit. 4.38. 



'^Thisnanie as used l)y Grun. Deuksclir. Akad. Wieu 48^: 72. 1884= C /imhriaius 



Schmidt. 



