OR LITTLE-KNOWN COMATL'L.T' . 525 



of wliich sometimes extend out on to the anus as far as the 7tli 

 joint. But it does not occur in the ' Challenger ' specimens. 



lu the dry specimen from Peron's voyage there is a tolerably 

 well-marked median tubercle at the junction of the first and 

 second distichals, of which there is hardly any trace in the other 

 examples ; while the syzygial interval appears to be 10-13 joints. 



In the original exam]:)le at Lund the centrodoi'sal partly con- 

 ceals the second radials, which are closely united laterally, and 

 the axillaries are more triangular ; while the position of the 

 second syzygy may be from the 20th to the 39th brachial. 



The mutilated specimen from Sumatra belonging to the Ham- 

 burg Museum resembles the larger of the two ' Challenger ' indi- 

 viduals in the more complete concealment of the first radials, and 

 in the small number of cirrus -joints, which maybe reduced to 23. 

 The second syzygy also may be as early as the 11th brachial, 

 while the later syzygial interval may rise to over 20 joints. 



There are about six other species ofActmoJuefra which resemble 

 A. multiracliata in the number and arrangement of the ray-divi- 

 sions ; but the large size of its centrodorsal, the overlap of its 

 arm-joints, and the fringe of spines on them and on the pinnule- 

 joints are sufficient to distinguish it from them, 



6. ACTINOMETBA MeTERT, U. Sp. 



This is rather a large species from Australia, distinguished by 

 the thin centrodorsal and the small number of cirri which it 

 bears. The rays divide three times, each division consisting of 

 three joints, the axillary with a syzygy. The arm-joints are tri- 

 angular, and overlap rather markedly. The lowest pinnules 

 appear to have been long and slender ; but in the dry specimen 

 it is difficult to make out their relative proportions, a point of 

 much ' importance for specific determiuations. The museums at 

 Dresden and Vienna contain some individuals in spirit which are 

 probably identical with the dry Hamburg specimen, so far as I 

 can judge from my notes, without having made a direct com- 

 parison; and I prefer therefore to reserve a detailed descrip- 

 tion of the type until I have made a closer examination of the 

 spirit-specimens. I pi'opose to name it after Dr. A. B. Meyer, 

 the accomplished Director of the Zoological Museum at Dresden^ 

 Avho collected some fine individuals during his residence in the 

 Philip])ine Islands. 



