236 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Comatula (Alecto) savignii J. MULLER, Abh. preuss. Akad. Wiss., 1847 (1849), p. 257 (detailed 

 description; Red Sea). A. H. CLARK, Crinoids of the Indian Ocean, 1912, p. 30 (identity). 



Comatula savignyi DUJARDIN and HUPE, Histoire naturelle des zoophytes, Echinodermes, 1862, p. 

 203 (synonymy; description; coasts of Egypt). VON MARTENS, Von der Decken's Reise in Ost- 

 Africa, vol. 3, 1869, p. 129 (Red Sea). 



Antedon savignii P. H. CARPENTER, Trans. Linn. Soc. (Zool.), ser. 2, vol. 2, 1879, p. 23 (arm struc- 

 ture), p. 29 (listed as an Antedon). BELL, Proc. Zool. Soc. London, 1882, p. 533 (listed), p. 534 

 (specific formula). P. H. CARPENTER, Proc. Zool. Soc. London, 1882 (1883), pp. 740 ff. 

 (discussion of Bell's method of formulation and corrected formula). 



Antedon savignyi LUDWIG, in Kossman, Reise nach dein Rothen Meer, vol. 5, Echinoderma, 1880, 

 p. 4 (Red Sea; no definite locality). VON GRAFF, Challenger Reports, Zoology, vol. 10, pt. 27, 

 1884, p. 13 (myzostomes). P. H. CARPENTER, Challenger Reports, Zoology, vol. 26, pt. 60, 

 1888, pp. 55, 252, 253, 255, 263, 366, 380 (discussion; Red Sea; Muscat [Kurrachee refers to H. 

 africana]). HARTLAUB, Nova Acta Acad. German, vol. 58, No. 1, 1891, p. 17 (in key), p. 19 (notes 

 on one of the cotypes), p. 47 (compared with A. klunzingeri [Lampromelra palmala]), pi. 2, fig. 

 20 (drawn from a cotype), p. 113 (in Gottingen Mus.). HAMANN, Bronns Klassen und Ord- 

 nungen des Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1582 (listed). CHADWICK, Journ. Linn. Soc. 

 (Zool.), vol. 31, 1908, p. 47 (Suez Bay, 4 fathoms; Ul Shubuk, 9 fathoms; Khor Shinab, 10-12 

 fathoms; Salaka; characters; color in life; commensal ophiurans). A. H. CLARK, Proc. U. S. 

 Nat. Mus., vol. 40, 1911, p. 5 (recorded by Chadwick from the Red Sea; identity); Crinoids of 

 the Indian Ocean, 1912, pp. 35,41 (identity). BOXJLENGER, Proc. Zool. Soc. London, 1913, 

 pp. 88, 102 (Ul Shubuk, 9 fathoms; myzostomes). 



Himerometra savignii A. H. CLARK, Smithsonian Misc. Coll., vol. 50, 1907, p. 356 (listed). 



Heteromelra savignii A. H. CLARK, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 11 (listed); Amer. 

 Nat., vol. 43, 1909, p. 254 (history; range), p. 255 (reported by Chadwick from Red Sea); Vid. 

 Medd. Naturh. Foren. K0benhavn, 1909, p. 164 (compared with H. singularia) ; Proc. U. S. 

 Nat. Mus., vol. 40, 1911, pp. 2, 5, 9, 14, 24 (history; synonymy; localities [record from Kurrachi 

 is H. africana]); Bull. Mus. Hist. Nat., Paris, 1911, No. 4, p. 251 (Muscat); Smithsonian Misc. Coll., 

 vol. 60, No. 10, 1912, p. 26 (division series compared with those of Petasomelra helianthoides) . 

 A. H. CLARK, Proc. U. S. Nat. Mus., vol. 43, 1912, p. 381 (cotype in U. S. N. M.), p. 383 (iden- 

 tity; original specimens include 1 of Grasped ometra [Heterometra] ater), p. 394 (localities; notes); 

 Crinoids of the Indian Ocean, 1912, pp. 2, 30, 35, 41 (identity), p. 124 (synonymy; localities 

 [specimens from Kurrachi and Straits of Orrnuz, and the notes, refer to H. africana]) ; Smith- 

 sonian Misc. Coll., vol. 61, No. 15, 1913, p. 27 (published reference to specimens in B. M.; 

 localities; notes; specimens from Kurrachi are H. africana). A. H. CLARK, Unstalked crinoids 

 of the Siboga-Exped., 1918, p. 76 (in key; range [except Persian Gulf and Kurrachi, which refer 

 to H. africana]). GisLlaN, Kungl. Fysiogr. Sallsk. Handl., new ser., vol. 45, No. 11, 1934, p. 

 48. A. H. CLARK, John Murray Exped. 1933-34, Sci. Reports, vol. 4, No. 4, 1936, p. 99 (range), 

 p. 104. 



Heterometra savignyii GisiJsN, Kungl. Fysiogr. Sallsk. Handl., new ser., vol. 45, No. 11, 1934, p. 22. 



Diagnostic features. The enlarged proximal pinnules are very long, slender, and 

 perfectly smooth, without carinate processes on the earlier segments. There are 

 usually 20 arms up to 150 mm. in length, which are composed of wedge-shaped bra- 

 chials. The cirri have usually 25-30 segments of which the outer bear long and 

 prominent dorsal spines. 



Description. The centrodorsal is discoidal, moderately thick, with a flat dorsal 

 pole 3 mm. in diameter. The cirrus sockets are arranged in two and a partial third 

 alternating marginal rows. 



The cirri are XV-XXX (usually about XX), 23-35 (usually 26-33), 15-22 

 (usually about 20) mm. long. Dorsal spines, usually long, slender, and prominent, 

 are developed from about the twelfth segment onward. 



There are no basal rays. 



