414 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



the pinnules of Ptilometra macronema (=australis) might be explained by its feeding 

 on living organisms which would instantly back away on coming into contact with 

 these plates; for deep water species supposedly feeding largely on falling organic 

 material, including dead organisms, such plates would be most useful in increasing 

 the area of the pinnule and therefore its capacity for gathering food. In the summer 

 of 1910 I visited Paris and there examined the type specimens of Muller's Comatula 

 macronema. I found, as I had suspected, that these represented the species I had 

 called Ptilometra dorcadis, so I used the name Ptilometra mulleri for the species living 

 on the coast of New South Wales. I figured a cirrus of a specimen of Ptilometra 

 mulleri from Sydney and another of a specimen of P. macronema from Kangaroo 

 Island, both from specimens in the United States National Museum. My paper on 

 the recent crinoids of the Paris Museum was published in 1911. In a paper on the 

 crinoids of the Hamburg Southwest-Australian Expedition, 1905, published in 1911, 

 I gave the range of Ptilometra mulleri as from Broughton Island to Port Phillip, and 

 of Ptilometra macronema as from Port Phillip to Dirk Hartog Island. In a memoir 

 on the recent crinoids of Australia published in 1911 I recorded and gave notes on 16 

 lots of specimens of Ptilometra mulleri, two of which were without definite locality, 

 and discussed the species in detail. I noted that one of the figures given by Wright 

 illustrating Kallispongia archeri, supposed by him to be a new sponge, probably 

 represents this form, but as the figure is said to represent a varietal form no nomen- 

 clatorial confusion can result. I said that in 1888 Professor Bell described his Antedon 

 wilsoni (=Aporometra wilsoni) from Port Phillip which, so far as I can see, is notliing 

 but the young of the present species, though it was adopted as valid two years later 

 by Carpenter. I added that more recently Dr. H. L. Clark has again described the 

 young of this species, this time under the name of Himerometra paedophora (=Aporo- 

 metra paedophora). I remarked that the specimens upon which Dr. Clark founded 

 his Himerometra paedophora are obviously young, representing a stage just subsequent 

 to the first appearance of P 2 . The cirri are only just beginning to become carinate 

 toward the tip, and the distal segments are as yet comparatively long. The sacculi 

 are "abundant and large, especially in distal pinnules," as in the adult, and the disk 

 already "shows many small calcareous plates, largest and most conspicuous around 

 the base of the anal tube." Side and covering plates have not as yet made their 

 appearance. I said that a specimen from Port Phillip, Victoria, is certainly referable 

 to "Antedon wilsoni," and "Himerometra paedophora," and no less certainly to either 

 Ptilometra mulleri or P. macronema, but which of the two it is impossible to say with 

 accuracy. I gave a long and detailed account of Himerometra paedophora. In the 

 introduction I gave the account of Encrinus australis published in "L'Institut" in 

 1845, and Dr. Robert Etheridge, Jr., reprinted the original account, published in 

 1843, as an appendix. In my memoir on the crinoids of the Indian Ocean published 

 in 1912 I gave the synonymy and range of Ptilometra mulleri, and in my paper on the 

 crinoids of the British Museum published in 1913 I recorded and gave notes on five 

 lots including 13 specimens, four from Port Jackson (Challenger), Port Stephens, and 

 Port Phillip, and one without locality. 



In 1914 Prof. Frank Wigglesworth Clarke and W. C. Wheeler published a detailed 

 analysis of the inorganic constitutents of the skeleton of this species based on a speci- 

 men from Sydney. 



