24 Clark — Seventeen New East Indian Crinoids. 



The radials are just visible in the median line beyond the eentrodorsal, 

 but extend well up in the angles of the calyx, their distal ends being 

 slightly separated so that the bases of the i Bn are not in apposition; the 

 i Bri are short with a convex proximal border and slightly converging 

 lateral edges; they are about three times as broad as the median length; 

 the axillaries are broadly pentagonal, twice as broad as long, the anterior 

 angle sharp, and the distal edges concave; the lateral edges are about as 

 long as those of the i Bri and make with them an obtuse angle. 



There are three n Br and four in Br series present ; three of the latter are 

 internal, the fourth being developed by the side of an internal one. The 

 division series are narrow so that a large amount of dorsal perisome is 

 visible; this is protected with numerous small irregular plates. 



The seventeen arms are 1_?0 mm. long, and resemble those of (7. 

 japonicus. 



Type locality. — "Sihoga" Station No. 133. 



Family ZYGOMETRIDjE. 

 Zygometra punctata sp. nov. 



The eentrodorsal is thin discoidal, the broad dorsal pole flat, circular, 

 2.7 mm. in diameter. 



The cirri are xv, 18-19, 9 mm. long; the first segment is very short, 

 the second and third about three times as broad as long, the fourth about 

 twice as broad as long ; the next two or three are similar to the fourth ; 

 the following decrease very gradually in length so that the distal ten or 

 eleven are slightly broader than long; the sixth and following bear 

 prominent sharp dorsal spines. 



The radials are entirely concealed by the eentrodorsal ; the i Bn are 

 very short and band-like, six or more times as broad as long, united to 

 the axillary by pseudosyzygy ; the axillaries are low triangular, the late- 

 ral angles slightly truncated, three times as broad as long. 



The n Br series are 4 (34-4), broad like the i Br series, with straight 

 lateral edges which are more or less flattened and are almost or quite in 

 apposition; the lateral portions of the dorsal surface of the ossicles of the 

 division series are roughened or very finely papillose as in the species of 

 Mariametra. 



The type has twenty-one comparatively short and rather stout arms 

 35 mm. long. 



Pi is about 5 mm. long, rather stout basally but tapering in the distal 

 half to a slender flagellate tip, with twenty segments of which the first is 

 about three times as broad as long and the following gradually increase 

 in length becoming about as long as broad on the ninth and slightly longer 

 than broad terminally ; the proximal segments are rather strongly cari- 

 nate, the carination having a straight profile parallel to their longitudinal 

 axes ; the outer segments have slightly prominent distal ends. P2 is similar 

 to Pi, but just perceptibly smaller and shorter. P3 is 2.5 mm. long with 

 twelve segments, resembling, except for its small size, the preceding. P4 is 

 2 mm. long with twelve segments of which the first three are much 



