A MONOGRAPH OF THE EXISTING CRINOIDS 215 



lower segments of P 2 , this pinnule in serripinna being simply serrate. Carpenter 

 gave as the locality for the species "Queensland." 



In 1894 Professor Bell recorded specimens of this species under the name Antedon 

 milberti from northwestern Australia in 8-15 fathoms, and under the name of Antedon 

 serripinna from Holothuria Bank in 24 and 39 fathoms. The specimens from north- 

 western Australia were from Baudin Island although Bell did not indicate this. 



In my first revision of the old genus Antedon published in 1907 I retained car- 

 penteri in the genus Antedon as therein restricted. Upon the establishment of the 

 new genus Oligometra by me in 1908, carpenteri was transferred to it, and it was listed 

 as a member of this genus in my revision of the family Himerometridae published 

 early in 1909. Later in 1909 I compared Oliogometra carpenteri with my new species 

 Oligometra (Decametra) studeri. In my memoir on the recent crinoids of Australia 

 published in 1911 I included in the synonymy the specimens listed by Bell in 1894 

 under Antedon milberti and A. serripinna, recorded three previously unknown speci- 

 mens from Port Curtis, and gave all the localities from which the species was known, 

 the data being taken from the labels of specimens in the British Museum. In my 

 report on the crinoids collected by the Hamburg Southwest Australian expedition 

 published in 1911, I discussed the range of this species in Australia, using the data 

 given in the memoir preceding. In my memoir on the criuoids of the ludian Ocean 

 published in 1912 I gave the synonymy of Oligometra carpenteri and it a known habitat 

 and bathymetrical range. I remarked that in London I had been able to examine the 

 specimens upon which the record of Oligometra serripinna in northwestern Australia 

 was based and found that they were in reality, as I had long suspected, examples of 

 0. carpenteri. In a paper on the crinoids of the British Museum published in 1913 

 I recorded and gave notes on three lots of specimens collected by the Alert at Port 

 Curtis and in the Prince of Wales Channel that I had found identified by Professor 

 Bell as Antedon carpenteri and A. milberti, and five lots from northwestern Australia 

 Holothuria Bank, Bassett-Smith Bank, Baudin Island, and "Northwestern Aus- 

 tralia" that had been identified by Bell as Antedon serripinna and A. milberti. The 

 depths, which had been omitted by Bell in his Alert report, were given with all the 

 records. In 1915 I gave a detailed account of the distribution of this species on the 

 coasts of Australia. In my report on the unstalked crinoids of the Siboga expedition 

 published in 1918, 1 recorded 4 specimens from station 273 and 2 from station 274. 



In 1921 Dr. Hubert Lyman Clark discussed the distribution of this species on the 

 Australian coasts. Dr. Clark wrote that Merton took five specimens in June 1908 

 on the northern coast of Little Kei Island. Merton's specimens were recorded and 

 described by Dr. August Reichensperger in 1913 under the name Oligometra serripinna 

 and belong to that species, not to 0. carpenteri. 



In 1926 Frank A. McNeill and A. A. Livingstone recorded two specimens from 

 the Sir Edward Pellew group of islands in the southwestern part of the Gulf of Car- 

 penteria, and gave notes on their occurrence. 



In 1929 I recorded a small specimen from Baudin Island in 8-15 fathoms that had 

 been sent me for identification by the British Museum. This is probably the same 

 specimen that I examined in London in 1910 and recorded from that locality in 1913. 

 At the tune I studied the specimen at the British Museum I failed to label it. 



