NO. 1820 RECEXT CRIXOIDS FRO^[ PHILIPPINES — CLARK 



221 



in that species. The cirri, while containing 35-40 joints, as in C. 

 pcrspinosa, differ strikingly from those of that species in having the 

 dorsal spines in the distal portion single and median in position in- 

 stead of paired. The general appearance of the whole animal is 

 much more delicate than in C. pcrspinosa; the costals are more elon- 

 gated, the arms, cirri, and lower pinnules more slender. 



Measurctiients. — Arms about 100 mm., cirri 25 mm. to 30 mm. in 

 length. 



Color (in spirits).— Purple, the costals and discoidal lower brach- 

 ials with a median line of white; arms, pinnules, and cirri ])urple. 

 with very numerous narrow bands of white. 



Type— Cat. No. 25443, U. S. N. M., from Albatross Station No. 

 5137; off Jolo town; 20 fathoms. 



Fragments of another specimen were dredged at Station X(j. 

 5145; off Jolo town; 2^ fathoms. 



CYLLOMETRA MANCA (P. H. Carpenter) 

 Station No. 5213; east of central Masbate ; 80 fathoms. 



Genus OLIGOMETRA A. H. Clark 

 OLIGOMETRA GRACILICIRRA, new species 



Centro-dorsal thick-discoidal, the rather large polar area thickly 

 covered with small blunt spines. 



Cirri in a single marginal row, xv, 28-30; first joint verv short, 

 the following gradually increasing in length to the fourth, which is 

 squarish, then becoming very slightly broader than long after the 

 tenth; from the seventh joint onward long and sharp dorsal spines 

 are developed ; opposing spine as long as the diameter of the penul- 

 timate joint, arising from the entire surface of that joint; terminal 

 claw rather stout, about as long as the penultimate joint, moderately 

 curved. 



Radials visible, but short, bearing a small median tubercle on the 

 distal border; first costals oblong, nearly three times as broad as 

 long, with straight lateral edges which are just in apposition; costal 

 axillaries broadly pentagonal, about once and one-half times as 

 broad as long. Ten arms; first two brachials wedge-shaped, the 

 shorter side in, the first interiorly united for one-half or two-thirds 

 of their length, and both slightly flattened exteriorly; third and 

 fourth brachials (syzygial pair) nearly twice as broad as long, rather 

 longer interiorly than exteriorly; following brachials to the ninth 

 oblong, about twice as broad as long, after which thev become 



