428 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



the lowest pinnules have a well-defined terminal comb which extends out to about 

 the twelfth brachial and occasionally appears further out on the arms, and that both 

 the "iuterradial and interpalmar areas are often much plated." He discussed the 

 peculiarities of this type in great detail, but without bringing out any new facts other 

 than that the specimen of Actinometra stellata (which he regarded as a synonym of 

 typica) in the Copenhagen Museum has 8 out of the 10 IIBr series of 2 elements only 

 which he believed to be united by synarthry and not by syzygy. 



He discussed the characters of novae-guineae at some length, and referred this 

 form to the Typica group. In the key to the species of this group he differentiated 

 it from typica by the possession of functional cirri and from multibrachiata by the 

 possession of 3 or 4 instead of 6 or 8 "postradial" axillaries, as well as by the posses- 

 sion of "few" instead of "well-developed" cirri. 



The arm structure of Bell 's variabilis he treated in some detail. He placed this 

 form in the Parvicirra group including " tridistichate species with a pinnule on the 

 second brachial and a syzygy in the third." In the key to the species of the Parvi- 

 cirra group he placed it next to multijida, from which it was distinguished by the 

 possession of XX instead of X cirri. But in his original description of multijida 

 Miiller gave the number of the cirri as XX, so that this difference does not hold. 



Dr. Clemens Hartlaub in 1891 recorded 2 specimens of Actinometra typica from 

 Amboina and described them in detail. He also discussed at considerable length the 

 articulation between the elements of the IBr series in the Typica group which Car- 

 penter assumed to be a syzygy, reaching the conclusion that it does not differ essen- 

 tially from that found in such species as some of those which Carpenter assigned to 

 the Parvicirra group. 



Prof. Ludwig Doderlein in 1898 recorded Actinometra belli from Thursday 

 Island; but one of his figures supposedly of that form represents this species. In the 

 succeeding year Prof. F. Jeffrey Bell recorded this species, as Actinometra typica, 

 from Blanche Bay, New Britain, where it had been collected by Prof. Arthur Willey. 

 One of his three specimens, however, is referable to C. gracilis. 



In 1908 I renamed Actinometra multijida of P. H. Carpenter, which I erroneously 

 assumed to be different from the Alecto multijida of Miiller, Comaster carpenteri. 

 The reasoning was that Alecto multifida of Miiller, according to the author 's own state- 

 ment, is a synonym of Comatula multiradiata Lamarck. Miiller took the ground 

 that Lamarck's description was not indentifiable, but that the same name had been 

 applied by Goldfuss to quite a different species which was adequately described, so 

 that the name multiradiata held for the latter. He therefore proposed multijida to 

 cover Lamarck's type specimens. This is all correct; but I went on to say that we 

 know now what the Comatula multiradiata of Lamarck really is, and that it is the same 

 as one of the species included in the Linnean Asterias multiradiata. Therefore it is 

 really the Comatula multiradiata of Goldfuss that needs a new name, and Alecto 

 multijida of Miiller becomes a pure synonym of Comatula multiradiata Lamarck, 

 which itself is a synonym of Asterias multiradiata Linn6. 



In another paper published in 1908 I recorded under the name of Phanogenia 

 typica two specimens which had been dredged by the Albatross in the Philippines, 

 and discussed at some length the characters of the division series in this and allied 



