THE RECENT CRINOIDS OF AUSTRALIA — CLARK. 753 



Actinometra nohilis, 1894, Bell, Proc. Zool. Soc, 1894, p. 394 



{North-west Australia). 

 Actinometra midtifida, 1894, Bell, loc. cit., p. 394 [North-western 

 Aiostralia). 



Differential Characters. — Comanthina belli, like Comantheria 

 alternans and C. briarens, has a very large number of arms and 

 a rudimentary centrodorsal usually devoid of cirri ; the 111 Br 

 series, however, are 2 on the outer side of the rays and 4 (3 + 4) 

 on the inner side ; the subsequent divisions are usually 2 ; and 

 this, taken in connection with the very prominent carination of 

 the segments in the proximal half of the pinnules, distinguishes 

 it at once from all other Australian Coniatulids. 



Australian Records. — The "Challenger" dredged this species 

 in 10° 30' S. lat., 142° 18' E. long. (Prince of Wales Channel, 

 near Cape York) in 8 fathoms. There are specimens in the 

 British Museum from Western and from North-western Australia. 

 There are also two unrecorded specimens from Torres Strait in 

 the U. S. National Museum, and one in the Berlin Museum 

 collected at Mermaid by the " Gazelle." This interesting form 

 is not otherwise known. 



COMANTHINA SCHLEGELTI {P. H. C). 



Actinometra schlegelii, 1881, P. H. Carpenter, Notes from the 



Leyden Museum, vol. iii., p. 210 C? East Indies). 

 Actinometra multifida (part), 1884, Bell, Rep. Zool. Coll. H.M.S. 



"Alert," p. 169 {Percy Island). 

 Actinometra dissimilis, 1888, P. H. Carpenter, "Challenger" 



Reports, Zool., vol. 26, p. 337 (Zamboanga). 

 Actinometra nobilis, 1888, P. H. Carpenter, "Challenger" 



Reports, Zool., vol. 26, p. 336, pi. Ixv. (Philippine Islands) 



18 FMS.). 



Actinometra regalis, 1888, P. H. Carpenter, tom, cit., p. 347, pi. 



Ixviii. (Banda, 17 fms.). 

 Comanihus {C omanthhia) nobilis, 1909, A. H. Clark, Vidensk. 



Medd. fra den Naturhist. Forening i Kobenhaven, 1909, 



p. 143. 

 Differential Characters. — Like C. belli, this species has the 

 III Br series 2 externally and 4(3 + 4) internally; it dijSers, 

 however, in lacking the strong carination of the earlier pinnule 

 segments and in liaving the IV Br and further division series 

 4(3 + 4). 



Avstralian Record. — The "Alert" obtained this species at 

 Percy Island, Queensland ; it is not otherwise known from 

 Australia. 



