A MONOGRAPH OF THE EXISTING CRINOIDS 177 



laslericola parasitic on this species); p. 310 (additional localities; description of a very abnormal 

 specimen). KOEHLER and VANEY, Bull, scient. de la France et de la Belgique, ser. 7, vol. 46, 

 fasc. 3, 1912, p. 206 (gastropod parasite). A. H. CLARK, Proc. Biol. Soc. Washington, vol. 26, 

 1913, p. 178 (range in east Asia); Smiths. Miscell. Coll., vol. 61, No. 15, 1913, p. 5 (specimens 

 in the British Museum). REICHENSPERGER, Abhandl. Senck. naturf. Gesellsch., vol. 35, 

 Heft 1, 1913, p. S3 (Ceylon); p. 84 (Ceylon; characters of the 4 specimens). VANEY, Bull. 

 scient. de la France et de la Belgique, ser. 7, vol. 47, fasc. 1, 1913, p. 17 (history and affinities 

 of the gastropod parasite). A. H. CLARK, Records of the Western Australian Mus., vol. 1, 

 part 3, 1914, p. 114 (collected by the Endeavour in Western Australia); p. 115 (East Indian 

 species; range extended southward from Dirk Hartog I.); p. 117 (between Fremantle and 

 Geraldton; characters of the specimens). F. W. CLARKE and WHEELER, U. S. Geological 

 Survey Professional Paper 90-D, 1914, pp. 33 and following (inorganic constituents of the 

 skeleton). -A. H. CLARK, Journ. Washington Acad. Sci., vol. 5, No. 6, 1915, p. 214 (Malayan 

 species; range and its significance); Internal. Revue d. gesamt. Hydrobiol. u. Hydrogr., 

 1915, pp. 222 and following (detailed account of the distribution in Australia). H. L. CLARK, 

 Carnegie Institution of Washington Publication 212, 1915, p. 101 (Mer; 5-6 fathoms; color in 

 life; characters); Spolia Zeylanica, vol. 10, part 37, 1915, p. 92 (occurs at Ceylon). HARTMEYER, 

 Mitt. zool. Mus. Berlin, vol. 8, Heft 2, 1916, p. 233 (Dirk Hartog I., No. 3432; St. Mathias I., 

 No. 5941; British North Borneo, No. 6373). F. W. CLARKE and WHEELER, U. S. Geological 

 Survey Professional Paper 102, 1917, pp. 20 and following (inorganic constituents of the 

 skeleton). A. H. CLARK, Unstalked Crinoids of the Siboga Exped., 1918, p. 10 (in key; range); 

 p. 14 (synonymy; notes; stations 33, 37, 40, 47, 49a, 50, 60, 90, 93, 99, 133, 144, 162, 240, 250, 

 282, 285, 294, 296, 299); pp. 271-275 (listed); pi. 3 (colored); Smiths. Miscell. Coll., vol. 72, 

 No. 7, 1921, pi. 1, fig. 16 (pinnule tip); pi. 3, fig. 37 (cirrus). H. L. CLARK, The Echinoderm 

 Fauna of Torres Strait, 1921, p. 8 (collected by the Carnegie Exped., 1913); p. 14 (Mer; notes; 

 Port Galera, Piiilippines; color in life); pp. 192 and following (range). 



fActinometra fimbriata HARTLAUB, Mem. Mus. Comp. Zool., vol. 27, No. 4, 1912, pp. 281, 414 

 (listed); p. 479 (Sooloo Is.). 



Capillaster mariae A. H. CLARK, Crinoids of the Indian Ocean, 1912, p. 74 (Andaman Is.; Ruk, 

 Carolines). 



Capillaster clarki REICHENSPERGER, Abhandl. Senck. naturf. Gesellsch., vol. 35, Heft 1, 1913, 

 p. 82 (Aru Is.); p. 85 (Aru Is.; localities; detailed description); figs. 2-5, p. 86 (showing irregu- 

 lar division series, irregular distribution of the syzygies, and a cirrus). A. H. CLARK, Unstalked 

 Crinoids of the Siboga Exped., 1918, p. 10 (in key; range); p. 18 (discussion; considered as a 

 synonym of C. multiradiata) . 



Comaster multifida (part) GISLEN, Kungl. svenska Vetenskap. Handl., vol. 59, No. 4, 1919, p. 3 

 (listed); p. 5 (Mjoberg's station 1); p. 14 (station 1; notes); pi. 1, fig. 4. 



Comanthus (Vania) parvicirra GISLEN, Nova Acta reg. Soc. sci. Upsaliensis, ser. 4, vol. 5, No. 6, 

 1922, p. 50 (Comaster multifida described in 1919 in synonymy). 



Diagnostic features. -This is a medium-sized species with usually 15-25 arms 

 and 15-28 (usually 20-24) cirrus segments, of which the outermost 12-14 are about 

 half again as broad as long. 



Description. The centrodorsal is moderate in size, discoidal, with the polar 

 area flat or slightly concave, usually with a shallow median pit, about 4 mm. in 

 diameter. The cirrus sockets are arranged in a crowded and somewhat irregular 

 marginal row, usually with a more or less complete second row of sockets which 

 alternate with those of the first. 



The cirri are XV-XXV (usually about XX), 15-28 (usually 20-24), from 15 

 to 18 mm. long. The first 4 (less commonly only the first 3) segments are subequal, 

 about twice as broad as long, slightly shorter in the first. The next segment 

 is usually about as long as broad, though rather variable, sometimes longer and 

 sometimes shorter. The fifth or sixth is a transition segment, about one-third 



