38 Mr. A. H. C'avk on new Crinoids 



broad as long ; the first segment has the distal dorsal edge 

 produced ; on the second and third this becomes a strong 

 transverse ridge, which gradually moves anteriorly, becoming 

 median on the eighth and following, and appearing as a 

 minute median spine in lateral view ; this ridge shows no 

 tendency to resolve itself into paired spines or tubercles, nor 

 does it narrow appreciably on the outer segments, appearing 

 as a broad transverse ridge on the antepenultimate; the 

 opposing spine is small, slender, median, erect, in height 

 equal to about one-quarter of tlie lateral diameter of the 

 penultimate segment. 



The arms, which resemble those of the other small species 

 of the genus, are 40 mm. long. 



Pi is 5*5 mm. long, with fourteen or fifteen segments, 

 moderately slender and somewhat stiffened ; the first segment 

 is short, the following gradually increasing in length, so that 

 the fifth is about as long as broad and the outer very 

 slightly longer than broad ; from the third segment outward 

 the pinnule is rather strongly prismatic^ with a prominent 

 rounded ridge running along the centre of the outer 

 surface ; P2 is t)'5 mm. long, with seventeen segments, 

 resembling Pj, but slightly more slender basally and tapering 

 more evenly to the tip, and not so strongly prismatic ; P3 is 

 4"5 mm. long, with fourteen segments, similar to the pre- 

 ceding, but proportionately smaller, and more slender distally ; 

 P4 is 3*5 mm. long, with thirteen segments, small and 

 slender, with the outer segments twice as long as broad ; P5 

 is similar, 3 mm. long, with eleven or twelve segments ; 

 Pg resembles Pg ; the distal pinnules are very slender, 7 mm. 

 long, with from twenty to twenty-two segments ; the outer 

 edges of the segments of the earlier pinnules are perfectly 

 smooth. 



Type Locality. Saleyer (north of Flores). 



Prometra minima, sp. n. 



The centrodorsal is thin discoidal, with a flat finely papillose 

 dorsal pole 1 mm. in diameter. 



The cirri are X, 10-12, 3 mm. to 4 mm. long : the first 

 segment is short, the following gradually increasing in 

 length, so that the fifth or sixth and following are about as 

 long as broad ; the second and following have a finely serrate 

 transverse ridge, which becomes median after the fourth or 

 fifth ; this transverse ridge is low and very narrow, appearing 

 as a very minute sharp spine in lateral view ; on the second, 

 third, and fourth segments the lateral angles of this ridge 



