232 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXXIV. 
First pinnule 6 min. long, very slender, with 15 joints, the first very 
short, the second and third about as long as broad, with their corners 
cut away, the fourth and fifth about half again as long as broad and 
more slender than the preceding, and the remainder becoming rapidly 
elongated with swollen articulations, and very slender and filiform ; 
second pinnule very slightly shorter, the first joint short, the second 
squarish, the third about half as. long again as wide, and the 
remainder becoming progressively elongated; this pinnule is about 
as stout basally as the first, but does not taper so rapidly, so that 
the general appearance is considerably stouter; a large genital gland 
Is present, occupying from the fourth to the eleventh joints; follow- 
Ing pinnules, so far as they remain, similar to the second. 
Color (in spirits).—White, the perisome darker. 
Type.—Cat. No. 22694, U.S.N.M.; from Albatross Station No. 
3697; Sagami Bay, Japan; 120 to 265 fathoms. | 
THAUMATOMETRA COMASTER, new species. 
Centro-dorsal low-hemispherical, nearly covered with cirrus-sock- 
ets which are closely crowded together and more or less irregularly 
placed. 
Forty to 45 cirri, 8 mm. long (the “small mature” cirri being 
rather shorter), with 18 to 17 (usually about 15) joints; first joint 
short, second about as long as broad, third over twice as long as its 
proximal diameter, and the fourth, which is the longest, about three 
times as long as its proximal diameter; the following joints gradu- 
ally decrease in length, the 4 or 5 terminal joints being about half 
again as long as broad; opposing spine very small, terminally situ- 
ated, and directed obliquely forward; terminal claw about as long as 
the penultimate joint, rather stout and well curved; the lower joints 
have flaring and expanded ends, this character dying away on the 
terminal 5-or 6, which are somewhat compressed laterally. 
Radials even with the edge of the centro-dorsal; first costals very 
short, with straight lateral edges, concave anteriorily; costal axil- 
laries rhombric, about as long as broad, the anterior angle somewhat 
produced, the posterior projection incising the first costal rather 
sharp. Ten arms about 45 mm. long; first brachial short, about twice 
as long exteriorly as interiorly, concave anteriorly, the inner edges 
entirely free; second brachial larger, irregular, with an angular pos- 
terior projection incising the first brachial; third and fourth brachials 
(syzygial pair) about as long as broad, slightly longer interiorly 
than exteriorly; following 4 or 5 jomts oblong or shghtly wedge- 
shaped, broader than long, then becoming more obliquely wedge- 
shaped and rather longer than broad, gradually increasing in length 
distally. Syzygia occur between the third and fourth, ninth and 
