No. 1615. ON A COLLECTION OF FEATHER STARS—CLARK.  — 309 
those in the distal with strongly produced and overlapping spinous 
distal edges; the fourth pinnule is only 5 mm. long, and the following 
increase rather rapidly to 8 mm., which length they maintain almost 
to the end of the arm. 
(Color (in formalin).—Purple, the cirri yellow with a broad purple 
band about the middle of each joint; two regenerated arms are yellow. 
The equality in size of the three proximal pinnules and the pro- 
portionately long cirrus joints appear to be constant characters for 
the differentiation of this species from O, serripinna. 
Genus CYLLOMETRA A. H. Clark. 
CYLLOMETRA ALBOPURPUREA A. H. Clark. 
Sagami Bay, 35° 02’ north latitude, 138° 50’ east longitude; 55 
fathoms. (Owston collection, No. 7036.) 
Eleven small specimens; four with 10 arms; two with 11; two with 
12; two with 13; one with 14. 
Sagami Bay, off Sunosaki; 55 fathoms; May 8, 1899. (Owston 
collection, No. 5417.) 3 
One specimen with 16 arms. 
Sagami Bay; 35° 06’ north latitude, 139° 42’ east longitude; 30 
fathoms; April 24, 1902 (Owston collection, No. 7215); or 34° 59’ 
north latitude, 139° 33’ east longitude; 60 fathoms; April 20, 1902. 
(Owston collection, No. 7214.) 
Two small specimens, one with 10, the other with 15 arms. 
Sagami Bay; 34° 58’ north latitude, 138° 45’ east longitude; 77 
fathoms; August 13, 1902. (Owston collection, No. 9274.) 
One specimen. 
Sagami Bay, 35° 13’ north latitude, 139° 45’ east longitude; 40 
fathoms; November 9, 1902. (Owston collection, No. 7283.) 
One specimen. 
Sagami Bay; 35° 11’ north latitude, 138° 43’ east longitude; 30 
fathoms; December 1, 1901. (Owston collection, No. 6659.) 
Five specimens; one with 14 arms; one with 18; two with 20; one 
with 21; the last has the single palmar series developed on the outer 
side of one of the rays; on one arm the syzygial pair consisting of 
the third and fourth brachials is repeated, neither bearing a pinnule. 
Sagami Bay; 55° 13’ north latitude, 139° 45’ east longitude; 40 
fathoms; November 9, 1902. (Owston collection, No. 7283.) 
One specimen with 20 arms. 
Sagami Bay; off Aburatsubo; 60 fathoms; April 2, 1899. (Ows- 
ton collection, No. 5417.) 
One specimen. 
Sagami Bay; 35° 11’ north latitude, 139° 45’ east longitude; 50 
fathoms; June 30, 1901. (Owston collection, No. 6106.) 
One specimen with 20 arms. 
