MANN diatoms OF THE /ALBATROSS VOV*( 2/0 



Asteromphalus flabellatus Breb. < rre\ . Quart . Journ. Micr. Sci. 7: lf.it pi. . .) 

 L859. Moeb. Diat.-taf. pi U.f. j 5. L890. Schmidt, Atlas pZ. 5/?. /. 10 

 VaaB.evLT.Synov.pl. 187. f. ■ 6.1881. Jan. Abh. Schles. Gee. Vaterl. Cult. 1862-': 

 13. pi iB.f 23. \^V2. Kait. Proc. Roy. Soc. Edinb. 16: 622. L889. De Toni, 

 Syll. Alg. 2: 1414. L894. 

 Spatangidium ftabellatum Breb. Bull. Soc. Linn. Norm. 2: 297. pl.S.f. I l- 

 Spatangidium peltatum Breb. Bull. Soc. Linn. Norm. 2: 298. pi S.f ',. I s ">7. 

 Asterolampra fiabellata Grev. Trans. Micr. Soc. Lond. n. b. 8: L16. I ^ < . ( > . 



Found at stations 2807, 3698, Galapagos [elands and off Bonshub [aland, Japan. 



Asteromphalus heptactis (Breb.) Kali- in Pritch. Eist. tnfus. ed. I. 838. pl.S.f. 



.'!. istil. Ratt. Proc. Eloy. Soc. Edinb. 16: 664. 1889. De Toni, Syll. Alg. 2: 



I in;. L894. 

 Spatangidium heptactis Breb. Bull. Soc. Linn. Norm. 2: 296. pi S.f :. L857. 

 Spatangidium ralfsianum Norm. Quart. Journ. Micr. Sci. 7: L61. pi 7.f 7-8. L859, 



Moeb. Diat.-taf. pi U.f : 8. L890. 

 Asterolampra heptactis Grev. Trans. Micr. Soc. Lond. n. s. 8: L22. I860. 

 Asteromphalus ralfsianus Grun. m Schmidt, Atlas pi 88. f. 5 . L876. 



As is Btated under .1. beaumontii Ehrenb., much confusion exists between these two 

 forms. A variety i- found abundantly ai stations 1505H and 1516H, having the valves 

 rather oval than circular, similar to Ralfs's figure cited above, Inn with the pari bisected 

 by tin- narmw limb flattened to Dearly a straighl line and showing a fold in the valve 

 on the left of this limb. This contorted phase i> perfectly uniform in these gatherings. 



Found ai Btations 2807, 2923, 3604, 1505H, 1516H, Galapagos Islands to Bering - 



Asteromphalus hiltonianus (Grev.) Halls in Pritch. Hist. Enfus. ed. 1. s :!7. L861. 



Ratt. Proc Roy. Soc. Edinb. 16: 661. 1889. Do Toni. Syll. Alg. 2: llll. L894. 



Asterolampra hiltoniana Grev. Trans. Micr. Soc. Lond. n. s. 8: 117./-/. ;. / 15. L860. 



Mod). Diat.-taf. pi 88. f 15. 1890. 11. L. Smith. Sp. Dial. Typ. no. 191. L878. 



I have not placed the above as a synonym of A. elegans Grev., bul the two arc enough 

 alike to raise the question of uniting them. I find both in -ome abundance in the 

 same dredging, station 2807, and the distinguishing between the two has been a rather 

 arbitrary one on my part. It may be found host to place this species under the older 



one, A. > It on us. 

 Found ai station l'sot. Galapagos Island. 



Asteromphalus hookerii Ehrenb. Ber. Akad. Wiss. Berl. 1844: 200./. 3. 1845; 



Mikrog. pl.85A. XXI. f :. L854. Pritch. Hi-t. [nfus. ed. I. 836. pi U.f 



.;;. 1861. Ratt. Proc. Hoy. Soc. Edinb. 16: «,.,.;. L889. Do Toni. Syll. Alg. 2: 



UK). L894. Drift. & Henf. Micr. Diet. ed. 3. 81. pi 19. f :. L875. 

 Asteromphalus bucMi Ehrenb. Ber. Akad. Wiss. Berl. 1844:200./ .. L845. 

 Asteromphalus mvierii Ehrenb. Ber. Akad. Wiss. Berl. 1844: 200. / ;. L845; 



Mikrog. pi 85A. XXI. ./'. 1. 1854. Jan. Abh. Schles. Ges. Vaterl. Cult. 1862-: 



L60. pi iB.f. U. L862. 

 Asteromphalus humboldtii Ehrenb. Dor. Akad. Wiss. Berl. 1844:200./ 6. L845; 



Mikrog. pi 35 A. XXI. f 3. 1854. .Ian. A; Rabh. in Rabh. Beitr. 1: [4. pi 3. 



f. 11] L863. Schmidt, Atlas pi 38, f 18 10. L876. 

 Asterolampra hookerii Grev. Trans. Micr. Soc. Lond. a. s. 8: Ml. I860. 



Ehrenberg's habil of giving separate name- i . . specimens of the same species differ- 

 ing in tin- number of arm- or divisions is responsible for the three synonyms cited 

 above, .1. hookerii having six rays, i b\ cAn seven rays, .1. humboldtii eight ray.-, and 

 .1. <-<n in rii nine rays. 



Found at station 3635H, Bering - 



