208 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



15. There are 30 arms, all the inner IIIBr series being present. All the IIBr 

 series and also all the IIIBr series are 4 (3+4). 



The specimen from Pulau Obin, Singapore, in the British Museum resembles 

 those from Singapore in the U. S. National and Copenhagen Museums. The speci- 

 men from British North Borneo resembles those from Singapore, although the proxi- 

 mal cirrus segments are a trifle shorter. 



Localities.- Singapore, Straits Settlements; Prof. Ed. von Martens [Hartlaub, 

 1890, 1891; A. H. Clark, 1912] (1, Berl. M., 5373). 



Singapore; Svend Gad [A. H. Clark, 1909] (27, U. S. N. M., 36136, 36176, E. 

 1080; C.M.). 



Singapore [A. H. Clark, 1909] (18, B. S.). 



Singapore [A. H. Clark, 1909] (1, R. T. J. [now M. C. Z.]). 



Singapore; from Ward's Natural Science Establishment, through Dr. F. A. 

 Lucas [A. H. Clark, 1909] (2, U. S. N. M., 35968). 



Singapore [A. H. Clark, 1934] (1, Raffles Mus.). 



Singapore (2, M. C. Z., 59, 289). 



Singapore (1, Y. M.). 



Pulau Obin, Singapore [A. H. Clark, 1913] (1, B. M.). 



British North Borneo; Herr Pagel [A. H. Clark, 1912] (1, Berl. M., 4744). 



Erroneous locality. Japan [A. H. Clark, 1908] (1, B. S.). 



Geographical range. Only known from Singapore and British North Borneo. 



Bathymetrical range. Littoral; all the known specimens were taken in shore 

 collecting. 



History. Dr. Clemens Hartlaub described this species, as Antedon martensi, in 

 1890 from a small and much mutilated individual which had been collected by Prof. 

 Ed. von Martens at Singapore. He red escribed and figured it in 1891. 



It was referred to the new genus Himerometra by me when that genus was created 

 in 1907. 



In 1908, under the name Himerometra crassipinna, I mentioned a specimen that 

 I had seen labeled, probably erroneously, "Japan." 



In 1909 in a revision of the family Himerometridae, martensi was retained in 

 Himerometra. 



Later in 1909 in my account of the comatulids in the Copenhagen Museum, I 

 identified as martensi, placing the species in the genus Heterometra, a specimen from 

 Singapore which appears really to represent H. bartschi. At the same time I recorded, 

 as Himerometra crassipinna, and gave notes upon 16 specimens from Singapore, which 

 are in reality H. martensi. In discussing these I mentioned other larger specimens 

 from Singapore that I had examined in the U. S. National Museum, in the Boston 

 Society of Natural History, and in the collection of Prof. Robert T. Jackson at Har- 

 vard University. 



In 1912, in a paper on the crinoids in the Berlin Museum, under the heading 

 Himerometra crassipinna, I gave notes upon Hartlaub 's type specimen and recorded 

 and gave notes on another from British North Borneo. 



In my monograph of the crinoids of the Indian Ocean published in 1912, following 

 my report on the crinoids of the Copenhagen Museum , I placed martensi in the genus 

 Heterometra and gave the locality as Singapore. I included what was really martensi 



