PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 81 



The arms are over 50 mm. long. 



P, has 12 to 13 segments and is 6 mm. long; P 2 has 14 to 16 segments and is 8 mm. 

 long; P 3 has 18 or 19 segments and is 11.5 mm. long; P 4 has 14 segments and is 7.2 mm. 

 long; and P 5 has 15 segments and is 5.5 mm. long. 



The color is violet-red dorsally; the cirri, disk, proximal pinnules and spots on 

 the arms are white. 



Localities. Siboga station 49a; Sapeh Strait, between Sumbava and Komodo (lat. 

 823'30" S., long. 11904'36" E.); 69 meters; bottom, coral and shells; April 14, 1899 

 [A. H. Clark, 1918] (7, Amsterdam M.). 



Siboga station 294; east of Rotti Strait, between Timor and Rotti (lat. 1012'12" 

 S., long. 12427'18" E.); 73 meters; soft mud with very fine sand; January 23, 1900 

 [A. H. Clark, 1912, 1918] (35, U.S.N.M., E. 452; Amsterdam M.). Type locality. 



Dr. Th. Mortensen's station 21, Sagami Bay area; 36-144 meters [Gislen, 1927] 

 (1, C.M.). 



Macclesfield Bank, South China Sea; 64-75 meters [A. H. Clark, 1929] (1, B.M.; 

 not to be found, 1958). 



Geographical distribution.- From Sumbava and Timor to Sagami Bay, Japan. 



Bathymetrical distribution. From 69 to 144 meters. 



Genus ANDROMETRA A. H. Clark 



Antedon (part) A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 353. 



Iridometra (part) A. H. CLARK, Proe. Biol. Soc. Washington, vol. 21, 1908, p. 131. 



Eumetra (part) A. H. CLARK, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 84. 



Andrometra A. H. CLARK, Journ. Washington Acad. Sci., vol. 7, No. 5, 1917, p. 127 (referred to the 

 Antedoninae), p. 128 (type species Anledon psyche A. H. Clark, 1908; diagnosis; range; included 

 species); No. 16, p. 506 (in key; range); Unstalked crinoids of the Siboga-Expcd., 1918, p. 198 

 (in key; range), p. 210 (key to the included species). GISLN Nova Acta Reg. Soc. Sci. Upsalien- 

 sis, ser. 4, vol. 5, No. 6, 1922, p. 130; Kungl. Svenska Vet.-Akad. Handl., ser. 3, vol. 17, No. 2, 

 1938, p. 15. 



Toxomelra (part) GISLEN, Nova Acta Reg. Soc. Sci. Upsaliensis, ser. 4, vol. 5, No. 6, 1922, p. 129. 



Diagnosis. A genus of Antedoninae in which P 2 is much longer than PI and also 

 longer than P 3 though similar to the latter. 



Type species. Antedon psyche A. H. Clark, 1908. 

 Geographical range. Andaman Islands and southern Japan. 

 Bathymetrical range. From 55 to 274 meters. 

 Thermal range. Recorded from 11.61 C. 



KEY TO THE SPECIES OF ANDROMETRA 



a 1 . Centrodorsal low hemispherical to almost columnar; cirri not more than XXXV; P a with 10-13 

 segments; P with 10-11 segments (southern and southwestern Japan; 55-274 meters). 



psyche (p. 81) 



a 1 . Centrodorsal conical, as high as broad at the base; cirri over L; P a and Pj with 15 segments; (Anda- 

 man Islands; 205 meters) indica (p. 84) 



ANDROMETRA PSTCHE (A. II. Clark) 



FIGURE 5 



Antedon psyche A. H. CI.ARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 353 (listed; nomen 

 nudum); Bull. Mus. Comp. Zool., vol. 51, No. 8, 1908, p. 241 (description; vicinity of Tokyo or 

 Sagami Bay), pi. 1, figs. 2, 3. 



