A MONOGRAPH OF THE EXISTING CRINOIDS 679 



(Banda, 1 specimen); Actinometra simplex (Admiralty Islands, 1 specimen); Acti- 

 nometra rotalaria (Zamboanga, 18 meters, 2 specimens; Australia, 1 specimen); 

 Actinometra valida (Challenger station 186, 1 specimen). 



As I have explained above, the specimen from Australia in the Paris Museum 

 which Carpenter took to be the type of Lamarck's Comatula rotalaria is in reality 

 quite a different thing. Carpenter did not actually see the specimens which were 

 described by Lamarck and redescribed by Miiller. 



The 2 specimens from Zamboanga determined as Actinometra rotalaria and the 

 single specimens of Actinometra simplex and Actinometra elongata are simply examples 

 of parvicirra with more IIBr 2 series than usual. The single specimen of Actinometra 

 valida is an example of timorensis with more IIBr 2 series than usual. 



Speaking of Actinometra elongata and Actinometra simplex, Carpenter said that 

 with one exception, which is in the national collection (British Museum), these are 

 the only comasterids which have such a simple arm structure that is, the IIBr 

 series 2 and no IIIBr series. He said nothing more about this specimen, which is 

 one of those collected in Torres Strait by Prof. J. Beete Jukes. 



In 1891 Dr. Clemens Hartlaub recorded and gave notes upon a number of speci- 

 mens identified as Actinometra parvicirra from various localities. 



He divided parvicirra into 2 types which he called A and B. Type A is the 

 equivalent of Comanthus samoana, while Type B includes Comanthus parvicirra and 

 C. timorensis. 



The allocation in the present work of the specimens recorded is as follows: 

 Comanthus samoana, Amboina (part), Peru, Samoa; Comanthus parvicirra, Amboina 

 (part), Ponape" ("Panope"), Moreton Bay; Comanthus timorensis, Amboina (part), 

 Mortlock Island, Lombock Strait, Fiji, Tonga (2), Atjeh. 



Hartlaub found the following manuscript names of Liitken associated with some 

 of the specimens he examined: Actinometra guttata, with a specimen from Fiji 

 ( = timorensis}; Actinometra intricata, with 2 specimens from Tonga ( = timorensis); 

 Actinometra mutabilis, with specimens from Moreton Bay (= parvicirra); Actinometra 

 trachygaster, with specimens from Peru ( = samoana). 



He accepted and referred to Carpenter's synonymy for this species; but he 

 mentioned a specimen from Tonga with 39 arms and all of the IIBr series 2 which, 

 according to Carpenter's scheme, would fall in Actinometra valida. 



In 1894 Professor Bell recorded Actinometra parvicirra from northwestern Aus- 

 tralia, but the specimens upon which this record was based represented Comatula 

 pectinata and Comantheria briareus. In the same paper he recorded pareicirra from 

 the Macclesfield Bank, these specimens representing Comaster brevicirra and Coman- 

 thus parvicirra. 



Mr. Edgar Thurston in 1894 recorded parvicirra from the Gulf of Manaar and 

 Tuticorin, the identification of his specimens having been made by Bell, who in 1888 

 published an advance notice of them. 



In 1895 Prof. Rene Koehler recorded parvicirra from the Bay of Amboina, and 

 in 1898 Prof. Ludwig Doderlein again recorded it from Amboina. In 1899 Bell 

 recorded this species from Sandal Bay, Lifu, where it had been collected by Prof. 

 Arthur Willey, and in 1900 Prof. Georg Pfeffer recorded it from Ternate. 



