NO. 1798. CRIN0ID8 COLLECTED BY THE ALBATROSS— CLANK. 545 



ventral distal edge. The cirri are moderately stout basally, but 

 taper slightly, becoming rather slender distally. 



Disk, calyx, and arm bases as in C. multicolor; the division series 

 and first two brachials have a slight rounded median carination. 



Fifteen to twenty arms 60 mm. to 70 mm. long, resembling those 

 of C. multicolor; the brachials have moderately produced distal dorsal 

 ends. 



Pi 7 mm. long with twenty-five segments, slender and weak, with 

 the first segment greatly enlarged; Pj stiff and spinelike, 10 mm. 

 long; Pg similar, 12 mm. long; P^ similar, 10 mm. long; Pg 9 mm. 

 long; Pg 8 mm. long; P7 and following pinnules 6 mm. long; distal 

 pinnules 8 mm. long. 



Tijpe.—C&t. No. 27494, U.S.N.M., from station 5414. 



There were also obtained at this station eighteen additional speci- 

 mens, two with thirteen arms, one with fifteen, two with sixteen, 

 three with seventeen, one with eighteen, three with nineteen, and 

 five with twenty; one of the specimens was small and much muti- 

 lated ; the two thirteen-armed specimens are young. 



Station 5356. — One specimen with nineteen arms. 



Station 5413. — Two specimens, one with seventeen the other with 

 eighteen arms. 



CALOMETRA DISCOIDEA (P. H. Carpenter). 



Station 5577. — One specimen with ten arms 110 mm. long and cirri 

 XVIII, 43-49, 27 mm. long. 



This species is easily distinguished from Calometra callista by its 

 longer and stouter cirri, which have much longer segments proximally. 

 The radials are produced interradially into a narrow process which 

 entirely separates the IBri; the IBrj and 2 have irregular thin and 

 broad lateral extensions which are just in apposition beyond the 

 interradial processes of the radials, thus forming, with the latter, a 

 complete interradial plating. The disk is covered with a solid pave- 

 ment of small subequal plates which become elongated on the anal 

 tube. There are five small but well formed orals, resembling those 

 of Hyocrinus. 



Genus PTEROMETRA. 



PTEROMETRA TRICHOPODA (A. H. Clark). 



Station 5356. — One small specimen with sixteen arms. 



Station 5413. — Two specimens; one has twenty arms 75 mm. long 

 and cirri 80 mm. long, the other has twenty-one arms 70 mm. long 

 and cirri 75 mm. long. 



Station 5414- — Sixteen specimens; one has thirty arms 60 mm. 

 long and cirri 50 mm. long, with 70-87 segments; another has twenty 

 arms 73 mm. long and cirri 77 mm. long, the longest with 100 seg- 

 Proo.N.M.vol.39— 10 37 



