J30 BULLETIN 82, UNITED STATES NATIONAL MUSEXJM VOLUME 1 



gK Outer cirrus segments moderately expanded dorsoventrally, the median width of 

 the fourth from the tip being rarely more than half again the width of the fourth from 

 the base (British Isles, except the southern North Sea, to Portugal; 0-457 meters). 



bifida bifida (p. 179) 

 S'. Outer cirrus segments strongly expanded, the fourth from the tip between half 

 again and twice as wide as the fourth from the base, rarely less. 

 /i'. Ccntrodorsal discoidal, the large flat dorsal pole more than half the basal di- 

 ameter (north-west Africa from Algeria to Senegal and Sierra Leone, the 

 Canaries, Madeira and the Azores and [7] from Sicily and Corsica; 0-200 



meters) bifida moroccana (p. 226) 



/i'. Dorsal pole of centrodorsal small, not more than half the basal diameter* (Rio 



de Janeiro to the Caribbean; 0-168 meters) duebeni (p. 234) 



a'. Cirrus segments 20 or more. 

 6'. Cirrus segments usually 20-23 (from Cape St. Vincent, Spain to the south of France, the west 

 coast of Italy, east to Israel, south and west to Tunisia [? Algeria]; 0-220 meters). 



mediterranea (p. 236) 



6'. Cirrus segments usually over 25 (northern and eastern Adriatic, eastward to the Gulf of .lEgina; 



0-932 meters) adriatica (p. 258) 



*[NoTE BY A.M.C.] In view of the variation in the relative size of the dorsal pole in 

 bifida bifida, I doubt whether this distinction of Mr. Clark's holds good. Gislen (1955) 

 has reduced moroccana (together with hupjeri) to the synonymy of (/-ueieni, but without 

 any additional information about the latter I think this must await confirmation. 



ANTEDON PETASUS (DUben and Koren) 



Figure 13,a 



See also vol. 1, pt. 1, figs. 103 (p. 165), 280 (p. 261), pi. 1, fig. 521; pt. 2, figs. 78 (p. 53), 238 (p. 197), 

 281 (p. 215), 747 (p. 349), 784-786 (p. 366), pi. 56, fig. 1355.] 



JAsterias peciinata Linnaeus, Museum Ludovicae Ulricae reginae Svecorum, Stockholm, 1764, 

 p. 716. 



Comatula mediterranea (not of Lamarck, 1816) M. Sarb, Beskrivelser og Jagttagelser, Bergen, 1835, 

 pp. 40, 42, pi. 8, fig. I9a-g (occurrence in Norway). — Lovbn, Kungl. Svenska Vet.-Akad. Handl., 

 for 1840, 1842, p. 121 (western Sweden; locally abundant; myzostomes); Arch. Naturg., 1842, 

 vol. 1, p. 314 (western Sweden; myzostomes). — von Ghafp, Das Genus Myzostoma, 1877, pp. 

 1-3 (myzostomes). 



Comatula rosacea (not of Fleming, 1828) Forbes, History of British starfishes, 1841, p. xviii (Scan- 

 dinavia), p. 17 (Norway). 



Alecto petasus DiJben and Koren, Kungl. Svenska Vet.-Akad. Handl. for 1844, 1846, p. 229, pi. 6, fig. 

 1 (near Fiskebackskil in Bohuslan; Egersund; Sondefjord). — LtJTKEN, Oversigt over Gronlands 

 Echinodermata, 1857, p. 73 (Scandinavian species), p. 81 (characteristic of the Scandinavian- 

 British region), p. 90 (northern), p. 107 (15-50 fms.). — M. Sars, Oversigt af Norges Echi- 

 nodermer, 1861, p. 1 (localities; range).— Dujardin and Hvp&, Histoire naturelle des zoophytes, 

 Echinodfirmes, 1862, p. 199 (listed).— W. B. Carpenter, Phil. Trans. Roy. Soc, vol. 156, 1866, 

 p. 697 (probably identical with rosaceus). — Mobius, Jahresb. Komm. Unters. deutsch. Meere, 

 No. 1, 1873, p. 149 (Arendal).— Storm, Kungl. Norske Vid. Selsk. Skr. for 1877, 1878, p. 246 

 (localities in Trondhjemsfjord); for 1878, 1879, p. 18 (same).— Kckenthal and Weissen- 

 BORN, Jenaische Zeitschr., vol. 19, 1886, p. 779 (Bognestroem). — P. H. Carpenter, Journ. Linn. 

 Soc. (Zool.), vol. 24, 1891, p. 69 (= rosacea). 



Comatula (Alecto) petasus J. MCller, Abh. Preuss. Akad. Wiss. for 1847, 1849, p. 253 (description; 

 Bohusl&n). 



Comatula petasus M. Sars, Bidrag til Kundskaben om Middelhavets Littoral-Fauna, Nyt. Mag. 

 Naturvidensk., vol. 9, 1857, p. 72.— Dujardin and Hupfi. Histoire naturelle des zoophytes, 

 EchinodCrmcs, 1862, p. 199 (synonymy; description; coasts of Norway). — Marion, Rev. Sci. 

 Nat., vol. 7, 1878, p. 141 (comparison with the Mediterranean species). 



