214 ACTIXOMETRA TERONII. 



Müller's description of these two specimens differs some- 

 what fi'om that given above , as he speaks of every fourth 

 joint in the arm-divisons as being an axillary without a 

 syzygium. There are, it is true, four joints, but the last 

 two of these are united by syzygy as in Art. japovica and 

 Act. pm'vinrra. Böhlsche ^j has already pointed out this 

 mistake of Muller (i. e. of Trosehel's) when describing 

 an individual from the Loyalty Islands in the Zoological 

 Museum at Göttingen, There is a similar one from the 

 same neighbourhood (Uea) in the Natural History Museum 

 at Stuttgart, and another from the Pelew Islands in the 

 University Museum at Copenhagen. 



20. A-Ctinomeffa Pevonii , n. sp. 



1816. Comatula multiradiata, Lamarck (in part). Syst. 

 d'Anim. sans Vert. II, p. 534. 



1834. Comatula multiradiata , de Blainville (in part). Ma- 

 nuel d'Actinologie. p. 249. 



1849. Comatula (Alecto) multiradiata, Muller (in part). 

 Abhandl. d. Berlin. Akad. 1849, p. 261. 



1862. Actinometra miUtiradiata , Dujardin fin part). Hist. 

 Nat. des Zoophytes. Echinodermes. p. 210. 



Description of an individual. 



Centrodorsal a convex disc somewhat hollowed in the 

 centre. Cirrhi 25 — 30, in two rows, stout and long (some- 

 times 40 mm.) and composed of about 30 tolerably 

 uniform joints. The joints increase in length up to about 

 the sixth and then slowly diminish, the later ones beiug 

 somewhat compressed laterally and the p^Miultiraate having 

 a faint opposing spine. First radials only visible at the 

 angles where small basals appear; the second planoconvex, 

 barely meeting laterally. Axillaries widely pentagonal 

 with rather sharp distal angles. 66 arms , the rays 



n Wicfrman's Archiv. 1«C6. I. p. 90. 



Notes Irom the Leyden. JMuseum, Vol 111. 



