REPORT ON THE CRINOIDEA. 



239 



of the axillaries have sharp edges, and these are continued along the sides of the first 

 three or four brachials, after which the joints become more cylindrical in form. The two 

 lowest are squarish, and both, but especially the first, are wider than their successors, 

 which are longer than wide, and overlap rather 

 sharply lioth at the muscular and at the trifas- 

 cial articulations, but more so at the former. 



The first pinnule is almost always on the 

 ninth brachial, and the pinnules are attached 

 some little way behind the distal edges of the 

 joints which bear them, so that the socket is quite 

 distinct from the articular face. 



The joints of the six or eight lower pinnules 

 which are enlarged to hold the genital glands 

 have a sharp dorsal edge and broad thin sides 

 which are much produced upwards, but the later 

 pinnules are more slender. The disk is paved 

 with closely set plates. 



Colour, in spirit, white. 



Locality. — Station 106. August 25, 1873 ; 

 lat. 1° 47' N., long. 24° 26' W. ; 1850 fathoms ; 

 Globigerina ooze ; bottom temperature, 36°'6 F. 

 (1°'8 C). One specimen, now without stem or 

 basal rincr. 



Remarks. — This species may be readily dis- 

 tinguished from the other three by the shape of 

 the funnel formed by the united first radials, and 

 the overlap of the arm-joints. As pointed out 

 already [ante, j). 234), it was not at first dif- 

 ferentiated by Sir Wyville Thomson from the 

 larger form obtained in the Southern Ocean, to 

 which he ultimately limited the name Bathy- 

 crinus aldrichianus. In fact it seems to be the 

 type from which the description of Bathycrinus 

 aldrichianus was mainly drawn up. Although 

 an entire specimen was obtained, the stem 

 appears to have separated from the head and to have been eventually lost ; for 

 otherwise we may take it for granted that the stem would have been drawn under 

 Sir Wyville's direction, together with the head belonging to it. In fact the upper 

 part of the stem was drawn, together with the head, for the woodcut (fig. 15) which 



Fig. 15." 



Bathycrinu scampbelHanus, n. sp. ; three times 

 the natural size. 



