ACTINOMETRA BENNETTI. 213 



as far as the third (palmar) axillaries. Arms of 100 -|- 

 joints. First brachials large, partly united with their fel- 

 lows, and not quite oblong, their outer sides being slightly 

 the longer : second joints somewhat shorter and more 

 oblong; third (syzygy) square or just longer than wide. 

 The next four or five joints are transversely oblong, their 

 hinder edges having slight backward projections alternately 

 on opposite sides, the folloAving joints longer , rather sharply 

 wedgeshaped , and overlapping with spiny distal edges. 

 Those after the 40th become shorter , blunter , and more 

 oblong and overlap less distinctly. 



First syzygium on 3rd brachial; the next between 15 

 and 18; (17—38, Böhlsche) then an interval of 2—5 (7, 

 Böhlsche) joints, usually 3 or 4 between successive sy- 

 zygia. 



The second joints of the arm-divisions bear long pinn- 

 ules ; the first two are nearly equal , of 70 joints and nearly 

 30 mm. in length. The size decreases to that on the sec- 

 ond brachial which is not quite half as long as the first 

 (distichal) pinnule. The next five or six decrease rather 

 more rapidly and the following ones increase again. The 

 pinnules as far as the third or fourth brachial have very 

 strong blunt processes on their last 12 or 15 joints ; in 

 the next six or eight joints the terminal comb becomes 

 less and less prominent and finally disappears altogether. 



Mouth , radial or nearly so ; all the arms grooved. A 

 few calcareous granules on the disc, especially round the 

 anal-tube. Diameter of disc 30 — 35 mm. 



Spread about 28 centim. Colour brown or reddish brown. 



Locality unknown. Coll. Bennett. 



Remarks. The two specimens on which the above des- 

 cription is based and which were examined by Troschel 

 for Muller , are both considerably mutilated. They differ 

 slightly in the number of cirrhi borne by the centrodorsal 

 and in the extent of its cirrhus-free surface ; also in 

 the development of spines upon the arm-joints, and in 

 the extent to which the perisome is plated between the rays. 



Notes trotii tlie Leyden Museum , "Vol. III. 



