REPORT ON THE CRINOIDEA. 367 



vidual. Attached to a stem-fragment which was brought up wath these individuals 

 were a small Ophiuran and a young Turbinolian coral (PI. LI. fig. 8). 



10. Metacrimis interruptus, n. sp. (PI. LIL). 



Dimensions. 



Length of Kteni to nineteenth node, . . . . . . 2 1 '00 cm. 



Diameter of stem, . . . . . . . .4-25 mm. 



Longest cirrus (forty-five joints), ...... 43'00 „ 



Diameter of calyx, ........ 8'00 ,, 



Length of arm (one hundred and thirty joints heyond the pahuar axillary), . 105 '00 „ 



Length of pinnule on second radial (twenty joints), .... 22-00 „ 



Length of pinnule on third distichal (eighteen joints), . . . 16'00 ,, 



Length of pinnule on first joint heyond the palmaraxillary (eighteen joints), . ll'OO „ 



Description of an Individual. — Stem moderately slender, with a sharply pentagonal 

 outline. Ten or eleven internodal joints with but slightly crenulated edges. Their sides 

 are somewhat hollowed, and marked by tolerably distinct horizontal ridges. These are 

 interrupted at the angles which generally bear very faint tubercles. The supra-nodal 

 joints are slightly incised, but the cirrus-sockets terminate in thickened rims distiuctlj' 

 above the lower edge of the nodal joint. Its syzygial face, like that of the infra-nodal, is 

 thus regularly pentagonal, as is its outline when seen from above, although the upper 

 surface is distinctly lobate. Cirri composed of forty to forty-five very uniform joints, 

 the lowest but little wider than their successors, few or none of which are longer than 

 wide. The cirri are longest between the ninth and twelfth nodes ; and the inter- 

 articular pores end at the eleventh node, 



Basals widely pentagonal, but not specially prominent. Eadials six, with syzygies 

 in the second and fourth. The joints are somewhat sharply rounded and relatively 

 narrow, so that the rays are widely separated above the hypozygal of the second joint. 

 They all divide three times ; but there is a fourth axillary in two cases, so that the total 

 number of arms is forty-two. These have about one hundred and thirty joints above the 

 palmar axillary, the basal ones almost c^uite smooth, and the later joints only with very 

 slightly raised distal edges. Primary arms of eight (rarely ten) distichals, and secondaries 

 of twelve to sixteen or eighteen 2:)almars. In two cases there is a third di^asion after ten 

 and twelve joints respectively. The third joint after each axillary is a syzygy. The 

 next syzygy in the free arms may be anywhere between the ninth and sixtieth brachials ; 

 after which an interval of six to fifteen joints occurs between successive syzygies. 



The radial pinnules are very large and massive, the first one esjiecially so. It consists 

 of twenty or twenty-two joints, the first six of which are very stout and almost cubical 

 in appearance, .the second being the largest, and the terminal joints slightly serrate. 



