_r ..I r 



Jri 



MAXX^DTATOMS OF THE ALBATROSS VOYAGES. 309 



separate rank to Tvutzing's and Greville's species. Gninowo pays, under B.ohfum 

 (Kiitz.) Grun.: "Hierher scheint mir als grosse Form Bidd. roperiana Grov, zu ge- 

 horen." Griinow here incorrc^clly credits the inclusion of Kiitzing's species in 

 Biddulp]iia to himself, an (^rror repeated l)y Schmidt.^ It was previously so classed 

 by Ilalfs. C' I think it is on the whole l)est to do as Van Iltnirck and De Toni have done, 

 notice th(i resemblance Ix^tween Kulzing's and (Jrevilh^'s species, but keep them 

 separate. The same will l)e tru(^ of tlu^ synonym of Kutzing's species, Odontella hid- 

 dulphioidcsWh^'dud.d Anew varit^ty is here figured. 



Found at stations 3G04, 3G8SII, 371 211, Bering and Okhotsk seas. 



Biddulphia scutellum Mann sj). nov. Plate XT.VII, figure 3. 



Valve an elongated oval, tlu^ surface evenly convex except for a circular central 

 area as wide as the valve, this flat (not concave); markings of the central area, 

 fine beading in radiating rows from two approximate foci; of the rest of the valve, of 

 similar l>eading in rows running chii'lly paralli'l wilh tlie long axis of the valve; in 

 addition to this beading, minute ])ointed processes scattennl evenly over the caitire 

 valvCj as in valves of B. ednrmhii F(4)iger; the tw(^ processes^ short, broad, and circa- 

 lar, close to the ends of the valve. 



Length of valve, 0.152 mm.; Avidth of valve, 0.05S nun. 



Type in the U. S. Xational Museum, No. 590139, from station 2844, off Aleutian 

 Islands, July 28, 1888; 54 fathoms, bottom of gray sand. 



The nearest species to ihis one is Biddulphia obtusa (Kiitz.) Ralfs^ in the doubtful 

 figure of it given in Van lleurek,^ wliich, as before stated, is somewhat nearer to B. 

 edwardsii Fch\gor, This fact, tak(*n in connection with the presence of fine spines 

 scattered over my specimens similar to those on B. cdfvardsii, makes it possible that 

 both this spc^cics and the forms figur(Kl in Van lleurck are extreme varieties of 

 Febiger's species. On the other liand, both may Ik; r(4)JLvsentatives of a separate 

 species. My specimen differs fnjiii that figured by Van Ib^irck in having no concavity 

 at the center, in the size of the beading, and in the e(^ntral area being the full width 

 of the valve. 



Biddulphia setigera (Bail.) Mann. 



Triceratium spinosum Rail. Am. Journ. Sci. 46: 139. pl.-S.f. 12. 1844. Pritch. 



Hist. Infus. ed. 4. 853. pi, CkJ. 19, 18G1. Schmidt, Atlas pi. 87, f, 2-5, 7, 13-15. 



1885. 

 Triceratium setig€rum^\x\\. Smithson. Contr. Knowh 7; 11./. 26. 1854. 

 Triceratium armatumRoi>vr , Quart. Journ. Micr. Sci. 2: 283./. /. 1854; 4:274, j:)7. 17, 



/ 9-12, 18oG. Moeb. Diat.-taf. pJ. 9.f. 9-12. 1890. W. Smith, Synop. Brit. 



Diat. 2: 87.1856. Cleve, Bih. Rv. Vet. Akad. Ilandl. 5^: 15. 1878. Castr. Bep. 



Voy. Chalk Bot, 2: 109. pL G.J. 2. 188G. 

 Triceratium serratum Wall. Quart. Journ. ^licr. Sci. 6: 243. pi. 12, f. 1-S. 1S5S. 



Priteh. Ilist. Infus. ed. 4. 855. 18G1. Moeb. Diat.-taf. pi, 16. f. 1-3, 1890. De 



Tonij Syll. Alg. 2: 973. 1804j as synonym of Amphitetras. 

 Biddulphia spinosaVi oyer, Vvoc, Acad. Phila. 1900: 703. 1901. 



From the above are excluded some forms imited by other authors. The A'ariety 

 named oniala by Grove tfe Sturt /is not at all like this speeit's^ but is nearer Triceratium 

 ornatuin Shadb., as the authors suggest. lUit it possibly represents a new species. 





« Grun. Reise Novara Bot. 1: 23, 1870, 



& Schmidt, Alias pL 122. f. 30. 1888. 



c Pritch, TTist. Infus. ed. 4. 848. ISGI. 



d Hedwigia 2: 45. pL 7./ 21, 18G0. 



e Van H<^ur. Synop. pi 100. f. II-14. 1881. 



/Journ. Quck. Wicr. Club II. 2: 329. pi. 11). f. 20. 188G 



