40 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Alexander Agassiz in 1888 published a resume of Carpenter's original account of 

 this species, accompanied by a very characteristic figure. 



In 1889 Carpenter compared the arm division of Antedon elegans (= Zygometra 

 comata), in which IIIBr series frequently occur on the inner branches from the IIBr 

 axillaries, to that of this species. 



Wilhelm Minckert hi 1905 noted that in this species single hypozygals or epizygals 

 in the proximal portion of the arms are not smaller than the other brachials. His 

 notes were based upon specimens from the Blake collection. 



In 1907 I referred this species to my new genus Thalassometra, and later in the 

 same year I compared the brachial spines of Thalassometra spinifera with those of a 

 new species, Thalassometra hawaiiensis. In 1909 I established the new genus Stylo- 

 metra for this species and "an undescribed form from the Caribbean Sea." The latter 

 was described by Hartlaub in 1912 as Antedon spinifera var. brevispina. During a 

 visit to Paris in 1910 I examined the specimen brought back by M. Duchassaing from 

 Guadeloupe which hi 1911 I said was "Une exemplaire de moyenne grandeur, un peu 

 mince." 



In his report published hi 1912 on the comatulids collected by the United States 

 Coast Survey Steamer Blake in 1878 and 1879 Dr. Clemens Hartlaub recorded Antedon 

 spinifera from 12 Blake stations and also recorded specimens that had been taken from 

 a cable raised from 278 fathoms off St. Lucia by the cable repair ship Investigator, 

 Capt. H. Cole. Dr. Hartlaub gave a very detailed and most excellent account of this 

 species, with many excellent figures. He described a new form, Antedon spinifera var. 

 brevispina, which was the same as my "undescribed form" mentioned in 1909. The 

 Blake collection had originally been sent to Dr. P. H. Carpenter for report, and was 

 turned over to Hartlaub after Carpenter's death. Together with the specimens there 

 were numerous drawings that had been prepared under Carpenter's direction. These 

 were largely unidentified. Such as could be identified from specimens in the Blake 

 collection or from Albatross specimens in the National Museum were retained and the 

 others discarded and original drawings prepared under Hartlaub's direction substi- 

 tuted. 



In 1913 I recorded a specimen from Barbados that I had examined hi the British 

 Museum in 1910. In my memoir on the unstalked crinoids of the Siboga expedition 

 published hi 1918 Stylometra spinifera was included and its synonymy was given. 



In his report on the Crinoidea and Echinoidea collected by the Bahama Expedi- 

 tion of the University of Iowa in 1893 which was published in 1918 Dr. Hubert Lyman 

 Clark recorded a single specimen of Stylometra spinijera from station 2. He said "A 

 single fine specimen of this beautiful species is all that the present collection contains. 

 Unfortunately the cirri are all broken, but enough is left of one to reveal the character- 

 istic features." 



In my memoir on the unstalked crinoids collected by the Siboga Expedition pub- 

 lished hi 1918 I inserted the genus Stylometra in a key to the genera of the Thalasso- 

 metrinae, giving the range as from Yucatan to Grenada, and gave the synonymy of 

 S. spinifera. In a paper on the crinoids and brittle-stars of the Barbados-Antigua 

 Expedition of the University of Iowa in 1918 which was published on March 15, 1921, 

 I summarized all the records for this species hi the vicinity of Barbados. In the same 

 year in another paper I republished the figure given in Part 1 as figure 35 on page 73 



