PART 5 



A MONOGRAPH OF THE EXISTING CKINOIDS 



771 



FIGURE 48. Tkaumatocrinus ineesttgatorii sp. nov., B.M., 1937. 

 2.25.29, John Murray station 158, part of arm with axillary. 



mm 



branch there are syzygies at 2+3 and 6+7, on the other the first syzygy is at 5 + 6. 

 The pinnules on the main portion of the arm are all moniliform, each bearing ventrally 

 a linear series of eggs; those on the two regenerated arm branches have not as yet de- 

 veloped eggs. The brachials in the mam portion of the arm are very obliquely wedge- 

 shaped, almost triangular, somewhat longer than broad, and slightly constricted cen- 

 trally. The brachials hi the two regenerated branches are much longer than broad. 

 The intersyzygial interval is 4 muscular articulations. 



The third fragment is a continuation of the left regenerated branch of the pre- 

 ceding one. It is 17 mm. long and consists of 11 brachials. 



The individual from which these fragments came was a female. The genital 

 pinnules bear on the ventral side a linear series of entirely closed globular sacs, broadly 

 in contact, and completely enclosed exteriorly by large thin plates, one to each segment, 

 giving the ventral surface of the pinnules a moniliform appearance. The transverse 

 septa between the sacs are very thin. Each sac contains a single large egg. 



Localities. Investigator station 124; off the Laccadive Islands (lat. 1047'45" N., 

 long. 7240'20" E.); 1285 meters; coral bottom; November 21, 1891 [A. H. Clark, 

 1912] (1 arm, I.M.). Type locality. 



John Murray Expedition station 158; off the Maldive Islands Gat. 442'30" N., 

 long. 7242'30" E. to 436'48" N., 7248'54" E.); 914 meters; April 7, 1934 [A. H. 

 Clark, 1937] (3 fragments, B.M.). 



