A MONOGRAPH OF THE EXISTING CRINOIDS 123 



species were from the collections of H. M. S. Alert. Among the new names were 

 Antedon insignis and A. loveni. 



In his list of emended formulae published in April 1883, Dr. P. H. Carpenter 

 included insignis, loveni, and perspinosa, together with 23 other species, under the 

 general formula A. 10 2 . 



In the Alert report published in 1884 Professor Bell described Antedon loveni in 

 detail and figured it. For it he gave the specific formula he had given for A. insignis 

 in 1882 ; but Antedon insignis is nowhere mentioned. Bell noted that the large Myzos- 

 tomum found on Antedon loveni had been named M. coriaceum by Dr. Graff; but 

 M. coriaceum was described in 1884 from A. insignis from the Alert collections at Port 

 Denison hi 3-4 fathoms. 



Dr. Ludwig von Graff in 1887, under the heading Myzostoma coriaceum, said 

 that the name Antedon insignis (1882) was altered by Bell in the Alert report to 

 A. loveni. Professor von Graff told me in conversation in 1907 that all his crinoid 

 names, and the notes on them, were furnished him by Dr. P. H. Carpenter. 



In the Challenger report on the comatulids published in 1888 Carpenter included 

 Antedon perspinosa in the key to the species in the Milberti group, but did not other- 

 wise mention it, as it was not represented among the species secured by the Challenger. 

 In the key to the species in the Milberti group he also included loveni, placing it, to- 

 gether with [Decametra] in/ormis, in the section characterized by the absence of P, 

 perspinosa being placed in the section including species with P a present. He noted 

 that in the Alert report Bell gave the name loveni to the species that appeared as 

 insignis in his earlier (1882) list, the loveni of this earlier list appearing as Antedon 

 pumila in the Alert report. 



Dr. Clemens Hartlaub in 1891 under the name Antedon perspinosa figured and 

 gave notes on a specimen that had been collected by Dr. J. Brock at Amboina. This 

 specimen is more properly referable to vepretum. He examined the type specimen of 

 Antedon perspinosa in the Leyden Museum giving notes on it also and comparing his 

 specimen from Amboina with it. He noted especially that both specimens lack P a . 

 He remarked that he regarded Bell's Antedon loveni from Port Denyson ( = Denison) 

 as identical with Carpenter's A. perspinosa. 



In my first revision of the old genus Antedon published in 1907, perspinosa was 

 placed in the new genus Cyllometra. In a footnote the new name Cyllometra belli 

 was proposed for Antedon loveni Bell, 1884, not Antedon loveni Bell, 1882. In 1908 

 I wrote that Cyllometra belli was originally proposed as a substitute for Antedon loveni 

 Bell, 1884, not Antedon loveni Bell, 1882; but Antedon loveni Bell, \88i= Antedon 

 insignis Bell, 1882; therefore Cyllometra belli is a pure synonym of Antedon insignis 

 Bell, 1882. In my revision of the family Himerometridae published in January 1909, 

 I removed perspinosa to the new genus Colobometra, of which I made it the genotype. 

 Later in the same year hi a paper on the crinoids of the Copenhagen Museum I com- 

 pared Colobometra perspinosa with the new species C. vepretum. In a paper on a third 

 consignment of crinoids from the Albatross Philippine expedition published on Febru- 

 ary 15, 1911, I mentioned the fact that Dr. P. H. Carpenter had overlooked the ab- 

 sence of P a in describing Antedon perspinosa. In 1911 I published notes on the type 

 specimen of Antedon perspinosa which I had examined at the Leyden Museum in 

 1910, and compared it with C. vepretum. 



