A MONOGRAPH OF THE EXISTING CIUNOIDS 525 



1884 and inserted the species in his key to the species of the Palmata group. He 

 gave the locality as Torres Strait. 



Dr. Clemens Hartlaub in 1890 described Antedon tenera, giving as the localities 

 Queensland (Gottingen Museum) and Torres Strait. He described it in greater detail 

 in 1891. He said that it is one of Liitken's manuscript species that has not previously 

 been described. The material on which he based his final account consisted of a speci- 

 men from Queensland in the Gottingen Museum, one from Port Denison, Queensland, 

 in the Hamburg Museum, and one from Torres Strait that he had received for exam- 

 ination from Dr. P. H. Carpenter. He gave notes on all these specimens. Unfortu- 

 nately none of them were sufficiently wdll preserved to figure. Hartlaub inserted Bell's 

 gyges in the key to the species of the Palmata group, on the basis of the characters 

 used by Carpenter in 1888, but did not otherwise mention it. 



In my first revision of the old genus Antedon published in 1907, gyges and tenera 

 were placed in the new genus Himerometra, and in my revision of the family Himer- 

 ometridae published in 1909 they were transferred to the new genus Dichrometra. 



In a paper on the crinoids of the Copenhagen Museum published in 1909, I 

 recorded as Dichrometra tenera two typical specimens from Bowen, Queensland, and 

 gave the original reference to Liitken's manuscript name. 



In a paper on the crinoids of the Paris Museum published in 1911, I recorded 

 and gave notes on a specimen under the name Dichrometra tenera that had been col- 

 lected at Thursday Island by M. Lix in 1891. 



In my report on the crinoids of the Hamburg Southwest Australian Expedition 

 published in 1911, as Dichrometra tenera I recorded and gave notes on three specimens, 

 one from station 14, one from station 22, and one labeled "?vicinity of Perth." The 

 last, a 7-rayed individual with 57 arms, was described in detail. 



In my memoir on the recent crinoids of Australia published in 1911, I included 

 Dichrometra gyges and gave notes on the type specimen, which I had examined at the 

 British Museum in 1910. I said that this species is nearly related to D. tenera, of 

 which it may eventually prove to be a synonym. I also included D. tenera, giving as 

 the localities Torres Strait, Queensland, Bowen, and Port Denison, and adding that 

 there is a dry specimen in the British Museum from Port Essington and a specimen 

 from Thursday Island in the Paris Museum. In giving the distribution of the species 

 I mentioned the Marshall Islands. 



In a paper on the crinoids of the Berlin Museum published in 1912, I recorded 

 Dichrometra tenera from Western Australia, the three specimens here referred to being 

 those collected by the Hamburg Southwest Australian Expedition and first recorded 

 in 1911. 



In my paper on the crinoids of the Hamburg Museum published in 1912, two 

 specimens of Dichrometra gyges were recorded from Port Denison and one was recorded 

 from Bowen; notes were given on them. Hartlaub's Antedon tenera was included in 

 the synonymy of gyges and, by an error, Bell's Antedon reginae was also included. 



In my memoir on the crinoids of the Indian Ocean published in 1912, I included 

 both Dichrometra tenera and D. gyges, giving all the localities from which the former 

 had been recorded and adding Samoa from Liitken's original mention of the form, 

 and giving the latter on the basis of Bell's specimen from Thursday Island only. 



