-^ mM 



■_ -fc- . i" TT-K^*-^"^.^^ r¥" 



MANN— "DIATOMS OF THE ALBATROSS VOYAGES, 239 



seems to me good. This figure of Scliiiii(lt\s is practically identical vitli an (^arlier 

 one'* Lliere markcnl '"fraglicli." TIutc is also some rosenildance, esp<H'ially in the 

 sLriation i>r the bord<T, to Mclosira inipcrfecdt Ilt'iih.^ Th(* above name refers to llie 

 n\senil>lan(n' of tliis bpeci(!s to some of tin* (.liricifotm Medusae. 



Ty])e in the U, S. Xaiional Museum, No. 500117, from station 3346, off Washington, 

 Septomher 22, 1890; VSG fathoms, bottom of grtuni mud. 



Melosira fsulcata var ?) scopes Mann, sp. nov. Plate L, Fr(:ruE4. 



Valv<^ (ircular, convex; the c(4iter inaik<Hl with a headed rircle one-fifth the valvt^'s 

 diameUT, the heads s(^( \vi(h^ ai)art in lingular ([uadrate ordi^r; surrounding this a I'Ugose 

 ring ext(*nding to one-liflh Ihe radius from the bi^rder an<l separated from this l>y a 

 narrow hyaline ban<l; l)order narrow, massive, ornamented with a <loubh^ row of alt(T- 

 nating iM^ads; dianietor of A'alve^ 0.07 mm. 



Till' form most nearly resembling this species is an unnamed figure of Schmidt's, ^ 

 whiih, with the al)ove, might Ix^ chiss(Ml as ver}^ wide varii ties of Melosira sulcata 

 (Khrenlj.) Kiitz. Hul such an ideiitincation would be altogether unsatisfactory. My 

 specii^s also shows a sliglit likt^ness to (^ydoLclla ainbilicala (Ehrenh.) Ralfs, as figured 

 {DUcopha umbilicala Ehrenl).) by Elironberg; t/ but, as Ralfs says, ^ though ropr<'- 

 sent<'d in Ehrenberg's figure with a puTictate c(*nt(T that diatom lias a smootli central 

 und)o, and it is sodescrib(sl by Ehr(*nl)erg. f Ehrenberg's species is probably identical 

 with Melosira icestii W. Smith, ff 



Type in the U. S. National Museum, No. 590118, from station 3712H, Okhotsk Sea, 

 September 4, 189G; 1,744 fathoms, bottom of green sand and fine mud. 



Melosira sol (Ehn-nl).) Kulx.. Sp. Alg. 31. 1849. Tritch. Hist. Infus. ed. 4. 819. 1861. 

 Van Ileur. Sjmop. pL <ji.f. 7-9. ISHI. Schmidt, Atlas pi 179. f. 21. 1892. De 

 Toni, Sylh Alg. 2: 1341. bs94. WoUe, Diat. N. A. pi 58 J. 1-2. 1890. Truan &, 

 Witt, Diat. TTayti, 17. pi 4- / iS, 1888. Castr. Rep. Voy. t'liall. Bol. 2: 93. pi 

 10. f, J, pi 17. f. ■?, pi 2Uf. 7. 18SG. 



(UilUonella sol Klu'enb. Ber, Akad. Wiss. Berl. 1844: 202. 1845; iliki'og. pi S5A. 

 XXILf, 12. 1S54. 



Gallionella ocuUis Ehicnb. i^cr. Akad. W'iss. 1^<t1. 1844: 202. 1845. 



Melosira ocubis Kiiiz. Sp. Alg. 31. J849. Pritch. Hist. Infus. <m1. 4. 819. ISGl. 



Cyclotella radiaia Hriglit. C^uart. Journ. Micr. Sci. 8: 9(>- pi (i,f, 11. bSf>0. 



Melmra radiata iiruu. in Eenzl, Tlciso Xovara P.ot. 1: 27. IS70. 



Melosira [sol var. 7) pofaris Grun. D(^!ikschr. Akad. W'icn 48-: 95. pi />./. -i-L 1884. 



Found at station 281 1, <'ff Alaska. 



Melosira sulcata ( Ehienl>.) Kiitz. liacill. 55. pj, 2. f. 7. 1844. llabh. Fl. Eur. .\lg. 1: 

 42. 18()4. Schmidt, Atlas pi 177. J\ 2^7 MK 1892. WoUe, Diat. N. A. pi 5H.f. 13- 

 14. Truan & Witt, Diat. Hayti, 17. jd. 4-/. /.'>■ 20. 1SS8. Van lleur. Synoj). pi 

 91. f. 16-18. 22-24. 1881. Pritch. Hist. Infus. ed. 4. 819. ;)/. 9./. 12U pi If- / 26. 

 Tan. Abb. Schles. CJes. Vaterl. Tub. 1862-: 10.pl 1 A. f. 22, lS(y2. H.L.Smith, 

 Sp. Diat. Typ. no. 233. 1874. 

 (lallionella sulcata Ehrenb. Ber. Akad. Wiss. Berk 1837: Ok 1838; Infus. 170. pi 21. 

 /. 5. 1838; Bhys. Abli. Akad. Wiss, Hork 1839: 171. ;)/. S. / 5a-e. 1811; 1841: 

 437. pi U L /. 17. 1843; Mikrog. pi lS\f. Ja-c, pi 20. TLf. 27, pi 25 A. XyU. 

 /. n-12. 1854. 



''S<-hmidt, Alias, pi 176. /. 2i. 1892. 



i>II(^ril). Diak Auverg. 32 ;>Z. !(),/. 21. 1893. 



cSdnnidt^ Atlas;?/. 1'7(7 f, 21. 1892. 



^^Ehnnd). Mikrog. pi snB.f. 9, 1854. 



^rrit<4K Hist. Tnfus. ed. k Slk 1801. 



/Ber. Akad. Wiss. Borl. 1854: 239. 1855. 



g\\. Smith, Synop. Brit. DiaE 2: 59. pi 52. f. -U. 1856 



