■r-.j- 



MANN DIATOMS OF THE ALBATROSS YO-^AGES, 275 



Asteromphalus fl.abellatus(^I5r(^l).)Grev. Quart. Jotirn. Micr. Sci. 7: 160^;/. 7./. ^-5, 

 1859. Moeb. Duil.-taf. pi. ^l.f. 4~5. 1890. Schmidt, Atlas pi SH,f, 10-12. 1876. 

 Van Hour. Synop. j)l, 127. /. fi-G. 1881. Jan. Al)h. Schles. Ca-s. Vat crl. Cult. ISeS^; 

 13. pi. 2B.f. 23. 18G2. Ilatt. Proc. Roy. Sue. Ediul). 16: G22. 1889. Do Toni, 



Syll. Alg. 2: 1414. 1894. 

 latanm'dmm fiabellatitvi . 



f 



J. 



Askrolampra flabeUala Grev. Trans. Mi<'r. So(^ T.on<l. n. s. 8: IK). 18G0. 

 Found at stations 2807, 3098, Galapagos Islands and off Ilonsliuli Island, Japan. 



Asteromphalus heptactis (Breb.) Ralfa in Pritdi. llisL. Infus. od. 4. 8^8, pL 8.f. 

 21. 18(]l. Ratt. Pruc:. Roy. Soc. Ediul>. 16: (i04. 1889. Do Toni, Syll. Alg. 2: 



1416. 1894. 

 Spatangidiumheptavtis Hvi'U. Bull. Soo, Linn. Norm. 2: 296. pi S.f. 2, 1857, 



Spaliingidium raJJsian^nn Norm. Quart. Journ. Mior* Sci. 7: 161. pi, 7./. 7-5. 1859. 



Mocb. Diat.-taf. pi 21. f. 7-S. 1890. 

 Aslerolampra heplactis Gvvw Trans. Wivr. Soc. Lon<l. n. 8. 8: 122. 1860. 

 isteromphalus ralfsuinus Grun. in Scliaiidl, Atlas pi S8, f. 5 (not/ 6-8). 1876. 



As is stated under A. heaufnonltt Elircnb., nuuli ctuifusion i^xists between these two 

 fonns. A variety is found abutulantly at stations 4505II and 4516II, having the valves 

 rather oval than circular, similar to Ralfs's figure citt^l above, but with 1h(* ]tari bisected 

 bv the narrow liml) flattcTUvl fo Tu^arly a straight lin<' and showing a fold in the valve 

 on the left of this liml>. This contorted phase is perfectly uniform in thos(^ gatht^rings. 



Found at t>tations 2807, 2923, 3601, 4505II, 151611, Galapagos Islands to Bering Sea. 



Asteromphalus hiltonianus (Grev.) Ralfs in l^ritch. Hist. Infus. vA. 4. 8.37. 1861. 

 Ratt. Proc. Roy. Soc. Edinl>. 16: 061. 1889. De Toni, SylL Alg. 2: 1414. 1894. 

 Aslerolampra Jdltoniana Grt^v. Trans. Mi<'r. Soc. bond. n. s. 8: 117. pi 4-f. l^i- 1860. 

 :Moeb. Diat.-taf. pi 88, f. 15. 1890. H. L. Smith, Sp. Diat. Typ. no. 491. 1878. 



I have not placed the abov(^ as a synonym of A . elegans Grev., but the two are enough 

 alil^e to raise the question of uniting ihem. I find both in some abundance in the 

 same dredging, statit>n 2807, and tlie distinguishing between the two lias been a rather 

 arbitrary one on my part. It may be found best to i)lace this species under the older 



one, A. elegans. 



Found at station 2807, Galapagos Island. 



Asteromphalus hookerii Khrenb. Per. Akad. Wiss. Berl. 1844: 200./ .^. 1845; 

 Mikrog. pi 83A. XXL f. f . 1854. Pritch. Hist. Infus. ed. 4, 836. plll.f, 

 34. 1861. Ratt. Proc. Roy. Soc. Edinb. 16: (;5G. 1889. De Toni, SylL Alg. 2: 

 1410. 1894. Griff. & Ilenf. Micr. Diet. ed. 3. 81. pi ID./. 2. 1875. 

 Asteromphalus bnchii Ehrenb. Ber. Akad. Wiss. lierl. 1844: 200,/ -^ 1815. 

 Asteromphalus ctivieni l':hnml>- Ber. Akad. Wiss. P>erl. 1844: 200. / 7. 1845 



J 



Mikrog. pi 3.5A. XXL / /. 1854. Jan. Abh. Schles. Ges. Vaterl. Cult. 1862-*: 



IGO. pi 2B.I 2U 1862. 

 Aaleromphalus himholdtii Ehrenb. Ber, Akad. Wiss. Berl. 1844: 200./ 6\ 1845; 



Mikrog. pl85A.XXLf.8.l?>bA. Jan. ct Rabh. in Ral)h. Beitr. 1:[4. pL^. 



/ 11] 1863. Schmidt, Atlas pi 88 J. 18-20. 1876. 

 Aslerolampra hookeni Grev, Trans. Mi(a-. Soc. Lond. n, s. 8: il4. 1860. 



Ehrenbcrg's habit of giving separate nam<^s to si)eciniens of the same species differ- 

 ing in the number of arms or divisions is responsLl)le lor the three synonyms cited 

 above, A. hooJcerii having six rays, A. buchil seven rays, A. humholdlu eight rays, and 



A, cuvicrii nine rays. 



' Found at station 3635II, Bering Sea, 



