wo, 1615. ON A COLLECTION OF FEATHER STARS—CLARK. 315 
Genus TROPIOMETRA A. H. Clark. 
TROPIOMETRA AFRA (Hartlaub). 
The collection contains seven specimens of this interesting species. 
In view of its apparent rarity, the following notes may prove of 
interest : 
Sagami Bay, 3° OV north latitude, 189° 44’ east longitude; 21 
fathoms. November 11, 1901. (Owston collection, No. 5915.) 
Four specimens, all deep purple in color. 
No. 1.—The arms are 210 mm. long, the calyx 30 mm. in diameter 
at the level of the first syzygy; there are thirty-six cirri 50 mm. long, 
with thirty-seven to forty-three (usually about forty) joints; two of 
the cirri have the distal portion broken off and regenerated, though 
the regenerated portion has not yet reached the normal stoutness. 
Regeneration of the cirri appears to be rare among the comatulids, 
having been heretofore reported only in 7ropiometra carinata, and, 
more recently, in Decametrocrinus vanhoffenianus. The first pinnule 
is 23 mm. long with thirty to thirty-five jomts; the second pinnule is 
rather stouter, 24 mm. long, with a similar number of joints; the 
third pinnule is similar to the second; the following pinnules gradu- 
ally decrease in length, the sixth being 22 mm. lone the eighth 18 
mm., and the ninth 16 mm. 
ii. 2.—The arms are 180 mm. long, the calyx 25 mm. in diameter 
at the level of the first syzygy; there are twenty-four cirri 40 mm. 
long with thirty-four to thirty-eight (usually thirty-seven) joints; 
the lower pinnules are all broken. 
No. 3—The arms are 170 mm. long, the calyx 23 mim. in diameter 
at the level of the first svzygy; there are twenty-five cirri 40 mm. 
long with thirty-four to thirty-seven (usually nearer the latter) 
joints. 
No. 4—The arms are 130 mm. long, the calyx 20 mm. in diameter 
at the level of the first syzvygy; there are twenty-eight cirri 40 mm. 
long with thirty-four joints. 
Sagami Bay; off Misaki. (Owston collection, No. 8139.) 
One specimen with arms 210 mm. long; it has twenty-eight cirri 
40 mm. long with thirty to thirty-five (usually thirty-four) joints; 
the pinnules are as in No. 1 from the preceding station. The color 
(in formalin) is yellow. 
Sagami Bay, off Misaki; June, 1903. 
One specimen with arms 230 mm. long; it has twenty-eight cirri 
40 mm. long with twenty-nine to thirty-five (usually nearer the 
latter) joints. 
Sagami Bay, 35° 15’ north latitude, 139° 48’ east longitude; 10 
fathoms; November 23, 1902. (Owston collection, No. 7285.) 
