1882.1 



PROF. F. J. BELL ON THE COMATULID^. 



ACTINOMETRA. 



parvicirra 



535 



paucicirra ... 



peronii 



pulcliella . . . 

 robustipinna 



I'otalaria 



sehlegeli 



Solaris 



trichoptera. . . , 



typica , 



variabilis . . . . 

 wahlberffi . . . . 



SA'DP^-l 



1.2.A'RD^ 



a 



SA'RDpK 



(1.2)3A'^. 

 A'(D)P^. 

 3A'(P)^. 

 SA'RDP-. 



X 



1.2.A'R.^. 



a 



3A'D-. 



1A'RD°. 

 o 



3A'D(P)^. 

 3A'D(P)^. 



ACTINOMETRA ANNULATA. (Plate XXXV.) 



Centrodorsal discoidal flat, with about 15 marginal cirri, in one 

 row, of about 15 joints, none of which are much longer than broad 

 though the third, fourth, and fifth are a little so ; the succeedin<^ 

 joints have distinct though not prominent spines, though they are 

 not always present on all of them. 



Forty arms ; the divisions very regular. 



First radials visible, second verv wide, in contact, third also very 

 wide, not a syzygy. Three distichals and three palmars, the axil- 

 lanes syzygies. First brachials wide, in contact ; the tliird brachial 

 a syzygy ; after the sixth the wedge-shape rapidly becomes apparent, 

 and the joints strongly overlap on either side alternately ; the free 

 edges ot the joints may present delicate denticulations. Some way 

 out the wedge-form diminishes; and then, owing to the strong pro- 

 jections of the ridges, the arms appear somewhat as thouo-h they 

 were ringed. ^ 



Brachial syzygies : third, tenth, fourteenth, and then at about 

 every fourth joint. 



The second pinnule, which is on the second palmar, is only a 

 very little longer than the first ; both are made up of a large number 

 of small jomts ; the fourth or fifth pinnule is short and fleshy. 

 Further out the pinnules are again longer and their joints elongated 

 and delicate. 



Arm nearly or quite 100 mm. long; diameter of disk 10 mm. • 

 cirri 8 mm. long. ' 



Cape York, North Austraha. Coll. B.M. 

 Proc. ZooL. Soc— 1882, No. XXXVI. 3(i 



