A MONOGRAPH OF THE EXISTING CRINOIDS 345 



in the Caribbean Sea, but it exhibits a good deal of variation in its characters, which, 

 he said, would be fully discussed in his report upon the Blake comatulids. He said 

 that Antedon (Koehlermetra) porrecta and A. {Thalassometra) multispina may serve as 

 a connecting link between A. (Stiremetra) lusitanica and the Caribbean A. granulifera. 

 He gave the range of granulifera as Caribbean Islands, in 101-120 fathoms. 



In the Challenger report there appears the name Antedon pourtaUsi. This is an 

 emendation of the name Antedon pourtalesii used as a nomen nudum by von Graff in 

 1883 and 1884 and by Braun (following von Graff) in 1888. The names used by von 

 Graff were given him by Carpenter. After supplying von Graff with the name Antedon 

 pourtalesii Carpenter was informed by Prof. F. Jeffrey Bell, who was a classical scholar, 

 that this and similar names should end in a single "i" instead of in two, and so in the 

 Challenger report he used the spelling pourtaUsi. Carpenter included Antedon pour- 

 taUsi in his list of species with more than 10 arms and the IIBr and IIIBr series of 2 

 elements. He said that it always has one and sometimes two axillaries beyond the 

 IBr axillary, but the IIBr series are not always followed by IIIBr series. Antedon 

 pourtaUsi, he said, is a fine species which he had dedicated to the memory of the late 

 Count Pourtales, adding that it is the host of Myzostomum brevipes von Graff (see 

 pt. 2, p. 661). He included pourtaUsi in his key to the species of the Spinijera group 

 of Antedon, in which it is paired with brevipinna; pourtaUsi Carpenter, MS. is said to 

 have "The pinnules from the tenth to twentieth brachials have the third to fifth joints 

 flattened and expanded laterally," while in brevipinna "The genital pinnules are com- 

 paratively slender with very slightly expanded joints." He listed Antedon pourtaUsi 

 among the species found between 100 and 200, and also between 200 and 350 fathoms, 

 and gave the range as the Caribbean Islands, in 124-262 fathoms. 



Dr. Clemens Hartlaub in 1895 listed Antedon brevipinna as a species of the Basicurva 

 group occurring in water up to 500 fathoms in depth, giving the range as Straits of Florida 

 in 270 fathoms. 



Dr. Wilhelm Minckert in 1905 gave an account of the distribution of the syzygies 

 and regeneration in Antedon brevipinna based upon material in the Blake collection. 



In my first revision of the old genus Antedon published m 1907 brevipinna, granulif- 

 era, and pourtaUsi were assigned to the new genus Charitometra, and in 1908 Charitometra 

 brevipinna was compared with a new species, Ch. smithi. In another paper published 

 in 1908 I described and figured a specimen with three pinnules on the same side of an 

 arm on three consecutive brachials that I identified as Charitometra imbricata (= Antedon 

 granulifera P. H. Carpenter 1888, not Antedon granulifera Pourtales 1878 = Comatula 

 brevipinna Pourtales 1869 = Antedon pourtaUsi P. H. Carpenter 1888). I assumed that 

 because Carpenter did not mention the granular ornamentation in his key to the species 

 of the Granulifera group the specimen he regarded as representing granulijera was with- 

 out it, and therefore not the granulifera of Pourtales. But, as noted by Pourtales him- 

 self, these tubercles are not always present in the specimens of the type series, and are 

 therefore wholly without systematic significance. In a revision of the family Thalas- 

 sometridae published on January 9, 1909, I established the new genus Crinometra and 

 listed as the included species Pachylometra brevipinna (Pourtales) and Pachylometra 

 imbricata (A. H. Clark). In a paper published on June 19, 1909, I described briefly 



843803—50 23 



