26fi ECHINODERMA OF THE INDIAN MlTSEUM, PART VII. 



which show a tendency to break up into tubercles, between the produced inter- 

 radial angles. 



Cirri 45 mm. to .'iO mm. in length (about seven times the diameter of the 

 stem) with from forty-eight to fifty segments, the first four very short, subequal, 

 the following gradually increasing to the ninth, which is nearly or quite as long as 

 broad, then remaining similar for five or six segments and very gradually decreas- 

 ing in length distally so that the later segments are about twice as broad as long ; 

 cirri at first transversely oval in cross section, gradually becoming circular and 

 after the first six or seven segments laterally compressed ; on the terminal six or 



57. — Metairiniis balheri. 

 The stem. 



seven segments there are indications of a median tubercle ; terminal claw as long 

 as the two preceding segments, conical, only slightly curved. 



Basals very prominent, shield-shaped, in lateral apposition all around the 

 calyx, strongly produced downward over the angles of the stem ; radials narrow 

 and band-like, of equal height all around the calyx, four or five times as broad as 

 long in the median hue; IBr 4(1 + 2); IIBr 5-11 (usually about 7) ; arms dividing 

 four or five times, with usually one more axillary exteriorly than interiorly (in 

 reference to the IIBr series) ; arms as far as the IIBr axillary robust, the articular 

 tubercles rather strongly indicated, the dorsal surface perfectly smooth ; beyond 

 the llIBr axillary the brachials have prominent finely spinous distal ends and are 

 rough to the touch. 



The pinnules are essentially like those of M. acutus. 



