A MONOGRAPH OF THE EXISTING CRINOIDS 437 



to suggest that they be forwarded to me. In the collection was a specimen from the 

 Sahul Bank that had been determined by Professor Bell as Antedon longicirra. This 

 I described under the name of Asterometra mirifica in 1909, comparing it with A. 

 cristata, new species, in 1911, and redescribing and figuring it in 1912. 



In 1910 I examined three specimens of Asterometra mirifica in the British Museum 

 from the Sahul Bank that had been identified as longicirra by Bell and in 1913 re- 

 corded and gave notes on them. In my report on the recent crinoids of the Siboga 

 expedition published in 1918 I recorded and gave notes on additional specimens from 

 Siboga stations 260 and 294. In 1929 I recorded this species from Rotti Strait where 

 it had been found on the Banjuwangi-Darwin No. 2 cable by the cable repair ship 

 Cable of the Eastern and Associated Telegraph Company. This species was mentioned 

 by Dr. H. Sieverts in 1932, and in 1933 Prof. Torsten Gisle'n reproduced the figure of 

 it given hi Part 2, fig. 207, p. 145. In 1933 I recorded and gave notes on some speci- 

 mens from St. Nicolaas Bay, Bali, in the Buitenzorg Museum in Java. 



ASTEROMETRAfCRISTATA A. H. Clark 



PLATE 40, FIGURES 209, 210; PLATE 42, FIGURE 217 



Asterometra cristata A. H. CLARK, Proc. U. S. Nat. Mus., vol. 39, 1911, p. 547 (description; Albatross 

 stations 5483, 5482; abnormal specimen) ; Crinoids of the Indian Ocean, 1912, p. 190 (synonymy; 

 locality); Unstalked crinoids of the Siboga-'E^ped., 1918, p. 141 (in key; range); Journ. Linn. 

 Soc. (Zool.), vol. 36, No. 249, April 1929, p. 647 (off Cape Padaran; 80 fathoms; notes). 

 GISLEN, Kungl. Fysiogr. Sallsk. Lund Forh., vol. 7, No. 1, 1936, p. 2 (southern Annam), p. 5 

 (French Indo-China), p. 6 (range). A. H. CLARK, Temminckia, vol. 1, 1936, p. 312 (Wille- 

 brord Snellius station 60* ; notes) . 



Diagnostic features. The elements of the division series and first two brachials 

 have a high thin median carination the crest of which is straight and parallel with 

 the long axes of the ossicles; 10-12 (usually 10) arms 90-110 (usually about 100) mm. 

 long, relatively more slender than in the other species of the genus; the first 12 bra- 

 chials may have the proximal edge more or less thickened, giving the arm bases a some- 

 what rough appearance and a slightly, but very distinctly, serrate profile with the 

 teeth directed downward and outward; cirri about XX, 77-107 (usually 80-90), 

 55-80 (usually 70-80) mm. long about three-fourths of the length of the arms. 



Description. This species is in general similar to A. longicirra from the Kei 

 Islands and to A. mirifica from the Sahul Bank. 



The centrodorsal is conical with the cirrus sockets hi 10 closely placed columns, 

 2, more rarely 3, sockets to a column. 



The cirri in the type specimen are XX, 77-86, from 60 to 65 mm. long, rather 

 short, moderately stout, especially basally, ventrally rounded-carinate in the proximal 

 half, the distal ventral edge of the short proximal segments being rather strongly 

 produced, this character gradually dying away as the segments become longer. 



The IBr series and first two brachials bear a narrow, sharp, very prominent 

 median keel of uniform height which is not nearly so high nor so sharp as that in 

 A. mirifica. In the latter the keels are seen in profile to be rather strongly convex 

 along the apex, giving a characteristic scalloped appearance to the lower part of the 

 animal ; in the present species the crest is straight so that the profile view of the animal 

 is not altered. 



