384 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



5138 in the Philippines. It was remarked that this is probably the species that has 

 been recorded from Port Denison as Antedon milberti, but the relatively slender cirri 

 with comparatively long segments contrast sharply with the very stout cirri of 

 milberti (in reality spectabilis, mistaken for milberti=tessellata), which have exceed- 

 ingly short segments. 



In a revision of the family Himerometridae published in 1909 discoidea was 

 referred to the genus Amphimetra, and later hi the same year it was compared with 

 A. formosa. 



In 1911 I wrote, in a paper on the crinoids of the African coasts and also in a 

 paper on the crinoids of the Paris Museum, that one of the figures (2a) of Comatula 

 carinata published by Guerin-Meneville appears to be a species of Amphimetra, and 

 that there is a specimen of A. discoidea (labeled by P. H. Carpenter Antedon milberti 

 var. dibrachiata) in the Paris Museum from which I suspected it had been drawn. 



In a paper on the crinoids of the Leyden Museum published in 1911 the synarthrial 

 tubercles of Carpenter's Antedon (= Amphimetra) pinniformis were compared with 

 those of discoidea. 



In a memoir on the crinoids collected by the Hamburg Southwest Australian 

 Expedition in 1905, published in 1911, a specimen of discoidea (in reality tessellata, 

 see page 360) was recorded from the ?vicinity of Perth, and the known localities for 

 discoidea were given (see page 369). 



In a memoir on the crinoids of Australia published in the same year specimens 

 of discoidea were recorded from Port Denison and Port Molle, and notes on them 

 were given. I mentioned Amphimetra formosa from Singapore and the Philippine 

 Islands, comparing it with the specimens of discoidea from Port Denison, and gave 

 the Australian localities from which discoidea is known, and also the range of the 

 species (see page 380). Gue'rin-Meneville's figure and the specimen upon wluch it 

 was probably based were again mentioned. 



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

 synonymy and range of this form. In the synonymy Amphimetra formosa was 

 included without comment, and in the range Formosa (Taiwan) was mentioned on 

 the basis of a specimen recently received by the United States National Museum. 



Dr. August Reichensperger in 1913 recorded and gave notes on a number of speci- 

 mens collected by Dr. H. Merton in the Aru Islands and discussed in detail the status 

 of this form, which he regarded as at best but a local variety of milberti (=tessellata) . 

 In the same year I recorded 12 lots of specimens in the British Museum, 7 from the 

 Alert collection previously recorded by Bell (1884), 2 from the collection of the 

 Penguin, also previously recorded by Bell (1894), 1 from Western Australia, and 2 

 without locality, one of which was labeled Actinometra brachiolata. 



In my memoir on the unstalked crinoids of the Siboga expedition published in 

 1918, I recorded specimens from Siboga stations 99 and 273 and gave a complete 

 synonymy, together with a complete list of the localities from which this form is 

 known. In the synonymy the references to Grube's laevissima should have been 

 placed under molleri. None of the specimens included under Himerometra anceps 

 (1908) are really this form. The specimen presumably from the vicinity of Perth 

 recorded as discoidea in 1911 was transferred tojacguinoti (=tessellata), as were those 

 from between Fremantle and Geraldton recorded as discoidea in 1914. All the 



