-1 ^-* -^ 



MAXN DIATOMS OF THE ALBATllUSS VOYAGES. 245 



18SL IL L. Smith, Sp. Dial. Typ. no. 507. 1874. (\isl.r. Rup. Vi^y. ('hall. B(.t. 



2: S8. 1886. Schmidt, Atla8 pi 130, / ^:^. 1888, Wolle, Diat. N. A, pi 6^, J, S, 



2>L 66. /. J, 4' 

 Crcsswellia minuia Grev. Trans. Micr, Sue, LoncL n, f^. 13; 4. pZ. i./. IS, .1865. 



Mod). Diat.-taf. yj/. 6J./, LL 1890. 

 SUphanopjjxis niejahri FJircnb. rhyt<* Abh. AkacL Wifis. Berl. 1872: 214. pi 6. JL 



/. .\ 1873. 

 Stephana pyxis cylindrica Ehrenb. Phys. Abh. Akad. Wi^H. l^erh 1873: -11. pi 6\ //. 



/. L 1874. 



Gniiiow f^onsidera S. apicnhifa Ii^hreiib. as separate because its spines are close to 

 llie center of the valve. De Toiii nlso ranks it ns separate. I think the distinction 

 is a \'cry weak one. The ptmr nj]:ures by "Weisse of J\ aplculata and P. appnidicula 

 are identical. S. campanula Castr.''' differs from this species solely in the increasiiii,^ 

 fineness of the network as it aj^i^roaches the niar^dn; in this respect it a^^ees with 

 S. (Cresswdlia) palmeriana Grev. . ^ and especially its variety, c which, like Castracane*s 

 fonn. is not easily separated from the above. ^ S. (CressifrlUa) tnrgida Grev.e isalso 

 too close for easy distinclion. (Sreville's figure is probal>ly loo coarse; he claims the 

 network is much finer than in S. funis, thoiigh l]ie valves are considerably larger. 

 Grunow^/also holds them to be distinct and draws attention to the enlarged ends of 

 the spines. 



Greville repeatedly spells the name ''Creswellia," but later "Cresswdlia;" the 

 laLler is correct, so far as the English family name of Cresswell is concerned. 



Fomid at stations 2844, 4020II, Aleutian Islands and Boring Sea. 



Stephanopyxis corona (I-^hrenb.) Grun.; Van lleur. Synop. pi SStcr, f, 10^ IL 

 1881; Treat. Diat. 134./. 158. 1896. Grun. Denkschr. Akad. Wien 48-: 38. 

 1S84. Schmidt, Atlas pi l^j,f. 10-17. 19-20, pi 130, f. IJ, 16-17, 36, 1888. De 

 Toni, SylL Alg. 2: 1142. 1894. Wolle, Diat. N. A, pi Si.f. U 6, pi 67./. 20, 

 1890. 

 Sy.sfcphania corona Ehrenb. IJer. Akad. Wiss. Berl. 1844: 272. 1845; Mikrog. pi 

 38. XV.f. 22, XVII. f. 16. 1854. Griff. & Ilenf. Micr. Diet. ed. 4. pi 18 J, h7 , 



1883. rrit<'h. Hist. Infns. ed. 4. 832. p/. 5. J. SL 1801. 

 Sy,stfpff(inki diadrma YAwi^iih, Wer. Akad. Wi^s. lierh 1844: 272. 1845; Mikrog. pL 



33, XVIIf.f, IUlSb4. Griff. S: ilenf. Micr. Diet. ed. 4. j^l 18. /. .5S, \m]. 



Pritch. Hist. Infns. ed. 4 . 833, 1861. Klitz. Sp. Alg. 12f). 1849. 

 Stephanopyxis diadema Ehrenb. 15cr. Akad, Wiss. Berl. ,1845: 80. 184G. l*rit(li. 



Hist. Infus. ed. 4. 826. 1861. 

 Pyxidlada diadema Tviitz. Sp. Alg. 21. 1849. 



But one specimen was found, identical with that ligured by Schnndt.S' 

 Found at station 3G9G. 



Stephanopyxis trisculpta Mann, sp. nov. Platk Xh\'. fuu he 6. 



Valve hemisphericalj covered willi large hyaline regnlar bosses, giving an obscure 

 appearance <tf hexagonal network; no cinle of spines, but instead of these short 

 knolt-like processes interspersed somewhat irregularly among the bosses or beads; 

 these prof^esses almost wanting at the center, becoming fre<pient at onedialf the radius 

 and from there outward increasing and near the margin regularly filling all the iiiler- 



«Castr. Rep. Voy. Chall. Bot. 2: 88. pi, 10 J, 14. 1886 



^ Trans. Micr. Soc. Lond. n. s, 13: 2. pi l.f. 9. 1865. 



c Schmidt, Atlas ;>/. 130./. 44- 1888. 



dCi. Schmidt, Atlas j>L ISO./. 43, 1888. 



^ Quart. Journ. ^Hvr. Sci. 7; 165. pi 7./. 14. 1859. 



/Denkschr. Akad. Wien 48-: 90. 1884. 



? Schmidt, Atlas ^^Z. 130,/. 13, 1888. 



