82 Clark — Six New East Indian Crinoids. 



along the proximal border about as far as the median third ; the distal 

 edges are slightly everted. 



The ten arms are 40 mm. long; the first bracbial has the proximal and 

 distal edges parallel; it is in close apposition with its neighbors both 

 internally and externally; the proximal edge is slightly everted; the 

 outer edge is turned outward and produced, like the outer edges of the 

 preceding ossicles; the inner edge is similarly, though less, turned outward 

 and produced; the synarthrial tubercles are small and well rounded, but 

 rather prominent; the second brachial is similar to the first, but about 

 twice as long exteriorly as interiorly; the third and fourth (the first 

 syzygial pair) are together roughly oblong, about two and one half times 

 as broad as long, tbeir lateral edges being modified as in the two preced- 

 ing; the following three brachials are wedge-shaped, about twice as broad 

 as the maximum length, with the dorsal surface convex and the distal 

 edge therefore prominent; after the tenth the brachials become triangu- 

 lar, about as long as broad, later very obliquely wedge-shaped and toward 

 the end of the arms twice as long as broad. 



Pi is o mm. long with thirty-five segments, very slender and delicate, 

 resembling, except for the absence of the enlargement of the first two 

 segments, Pi in Calometra ; the earlier segments are broader than long, 

 the seventh or eighth and following about as long as broad; Ps is 6 mm. 

 long with eighteen segments of which the sixth-eleventh are greatly pro- 

 duced ventrally forming a roof over the gonads, which are also protected 

 by a heavy ventral plating; the terminal seven segments are very small 

 and delicate; Pa is similar, 4.5 mm. long with fourteen segments, of which 

 the sixth-tenth are greatly expanded ; P4 is 4 mm. long with thirteen seg- 

 ments, the fifth-ninth expanded; P5 is 3 mm. long with ten segments, 

 none of which are expanded; the distal pinnules are 5 mm. long with 

 eleven or twelve segments. 



Type locality— "Siboga" Station No. 266. 



Strotometra ornatissimus sp. now 



The centrodorsal is flattened hemispherical 2.5 mm. in proximal diam- 

 eter, with the dorsal pole slightly convex; the cirrus sockets are arranged 

 in one and a partial second closely crowded and irregular marginal row. 



The cirri are about xv (there are twenty-two cirrus sockets, but some 

 of them are not of full size); the longest stump is 4.5 mm. to the distal 

 dorsal edge of the fifth segment; the first segment is about twice as broad 

 as long, the second about as long as the median diameter, centrally con- 

 stricted, the third about twice as long as the median diameter centrally 

 constricted with the distal end especially prominent as in the second, the 

 fourth about three times as long as the median diameter, similar to the 

 third, the fifth similar to the fourth but not quite so much constricted 

 centrally and hence appearing slightly broader in lateral view. 



The radials are just visible beyond the edge of the centrodorsal ; the 

 1 Bn are short, about four times as broad as the median length, the proxi- 

 mal border produced into a thin straight margin, the lateral borders 



