A. H. CLARK : THE CRINOIDS OF THE INDIAN OCEAN. 115 



tip ; the proximal pinnules are about 20 mm. long with from seventeen to 

 twenty segments. 



Habitat. — Macclesfield Bank. 



Depth. — 13-36 fathoms. 



Remarks. — Professor Bell assigned this species to the " Granulifera group " 

 of Carpenter instead of to the " Savignyi group " where it belongs. In the 

 original description no characters of other than generic or family importance are 

 mentioned . 



The depth is given as " 31-36 fms." but the label with the specimen reads 

 " 13-36 fms." 



This species is very similar to Himerometra sol which was found by Mr. J. 

 vStanley Gardiner in the Maldive Islands (the Antedon palmata of Professor Bell) 

 but the cirri are larger and rather stouter and the proximal pinnules are shorter, 

 about as stout in the proximal part, but tapering more rapidly, and without the 

 flagellate tip. The segments in the outer part also do not possess the strongly 

 everted distal edges seen in H . sol. The cirri of H. inopinata are much the same 

 as those of H. sol, but for the presence of a distinct, though small, spine on the 

 last five or six segments ; that on the antepenultimate segment is nearly as large 

 as the opposing spine. 



HIMEROMETRA SOL, sp. nov. 

 Antedon palmata 1002. Bell, in Gardiner, Fauna and Geography of the Mal- 

 dive and Laccadive Archipelagoes, vol. 1, part 3, p. 224. 

 Description. — Centrodorsal thick discoidal, with a strongly concave dorsal 

 pole 4 mm. in diameter. 



Cirri XXI, 25, 27, 28 and 30, 2.1 mm. to 30 mm. long ; the longest segments, 

 in the basal third, are nearly or quite as long as broad; the distal segments are 

 slightly broader than long, sometimes as much as one third broader than long ; 

 the terminal ten or twelve have a small and low median dorsal tubercle, some- 

 times scarcely noticeable until near the end of the cirrus ; opposing spine well 

 developed and conspicuous. The cirri as a whole are stout, stouter than in the 

 other species of the genus, with approximately subequal segments. 



The forty-one arms are 140 mm. long; the IIBr. series are 4 (3+4) : the 

 llIBr series are 4 (3+4) externally, 2 internally: the IVBr series when present 

 are 4 (3 + 4). 



P„ is 18 mm. long with from 30 to 32 segments whifh are nearly twice 

 as broad as long in the proximal half, becoming squarish in the distal third 

 and terminally twice as long as broad ; after the fourth or fifth the segments 

 develop strongly everted and produced distal edges, this character gradually 

 dying away in the distal third ; this eversion is smooth and not serrate. These 

 proximal pinnules are very stout, but also very long, and taper distally to a 

 flagellate tip as in H. magnipinnn ; but the eversion of the distal ends of the 

 segments is much greater than in that species, and the cirri are much stouter. 



