A MONOGRAPH OF THE EXISTING CRINOIDS 375 



detail and figured a specimen, under the name Antedon milberti, from the Suuda Strait 

 that had been collected by Capt. G. W. Boot and given to the Museum of Compara- 

 tive Zoology by Prof. Louis Agassiz in 1859. 



In a paper on the crinoids of the British Museum published in 1913 I recorded 

 one specimen of Amphimetra milberti from Port Molle, where it had been collected by 

 the Alert, one from Challenger station 212, and one from Challenger station 203. The 

 first represents the present species, but the last two represent A. molleri; they were 

 referred to milberti because of their resemblance to the specimen from Albatross 

 station 5100 (=A. spectabilis). 



Dr. August Reichensperger in 1913 recorded and described three specimens 

 collected at Amboina by Professor Strubell and commented on the relation between 

 this form and A. discoidea. 



Under the name Amphimetra discoidea, in 1914, I recorded and gave notes upon 

 six specimens dredged by the Endeavour between Freniantle and Geraldton, Western 

 Australia. I said that the specimens appeared undoubtedly to be exceptionally 

 large and well-developed examples of discoidea but that typically discoidea has more 

 slender and more tapering cirri in which the longest proximal segments are very 

 nearly or quite as long as broad, but the distal are shorter, being broader than long. 

 I remarked that in typical milberti the cirri are much stouter than they are in these 

 specimens, the segments all being approximately of equal length, though the outer 

 are a trifle longer proportionately, about four times as broad as long. The specimen 

 assumed to represent milberti upon which the preceding comparison was based was the 

 specimen from Albatross station 5100 subsequently described as the type of spectabilis. 



Dr. Robert Hartmeyer in 1916 published a note saying that the specimen pre- 

 sumably from Perth is in the Hamburg and not in the Berlin Museum. 



In the report upon the unstalked crinoids of the Siboga expedition published in 

 1918, 1 attempted a complete revision of the species of this genus. The specimen from 

 Albatross station 5100 was finally recognized as a distinct form and called spectabilis, 

 although it was not formally described. The present species, under the name of 

 Amphimetra jacguinoti, was recorded from Siboga stations 33 and 164, and notes on 

 the specimens were given. The specimens previously called discoidea from ?the 

 vicinity of Perth and from between Fremantle and Geraldton were transferred to this 

 species. Amphimetra milberti and A. tessellata were included in a list of doubtful 

 species of Amphimetra on the basis of their type specimens only, and the former was 

 discussed at considerable length. 



In 1919 Dr. Torsten Gislen recorded and gave notes upon four specimens collected 

 by Dr. Eric Mjoberg on the northwest coast of Australia and also discussed the 

 relationships of the species at some length. 



In 1921 Dr. Hubert Lyman Clark discussed the range of this form on the coasts 

 of Australia, and in 1924 Dr. Gisle'n described various structural features on the 

 basis of the material from Mjoberg's collection. In 1936 Dr. Gislen recorded and gave 

 notes on a specimen from Annam. Dr. H. L. Clark in 1938 recorded and gaves notes 

 on 10 specimens collected by himself in 1929 and 1932 in the vicinity of Broome, 

 Western Australia. 



