MONOGRAPH OF THE EXISTING CEINOIDS. 47 



Actinometra trichoptera Comanthus Inchoptera. 



Adinometra japonka Comanthus japonica. 



Actinometra multifida Comaster multifida. 



Actinometra variabilis Comaster multifida. 



Actinometra grandicalyx Comantheria grandicalyx. 



ActinoTnetra altemans Comantheria altemans. 



Actinometra briareus Comantheria briareiis. 



Actinometra divaricata Comantheria briareus. 



Actinometra magnifica Comantheria magnifica. 



Actinometra belli Comaster belli. 



Actinometra duplex Comanthina schlegelii. 



Actinometra nobilis Comanthina schlegelii. 



Actinometra robuslipinna Himerometra robustipinna. 



Actinometra littoralis Comanthus annulata. 



Actinometra regalis Comanthina schlegelii. 



Actinometra schlegeli Comanthina schlegelii. 



Actinometra peroni Comanthus bennetti. 



Actinometra bennetti Comanthus bennetti. 



PROMACHOCRINUS. 



Promachocrinus herguelensis Pro7nachocrinus hergitelensis . 



Promachocrinus abyssorum Thaumatocrinus renovatu^. 



Promachocrinus naresi Thaumatocrinus naresi. 



Besides the systematic account of the various species, the Challenger report 

 contains a vast amount of information on the morphology of crinoids, and an 

 exhaustive discussion of the relation between the recent and the fossil species. 

 Most of this, however, is included in the volume on the stalked crinoids published 

 in 1884. 



The myzostomes found upon the crinoids which were studied by Carpenter 

 were, as previously noted, sent to Prof. Ludwig von Graff, who reported upon them 

 in four papers (1877, 1883, 1884, and 1887) in which he included many manuscript 

 names which had been furnished him by Carpenter and by Semper. 



In the same year that the Challenger report was published Bell reported upon 

 a small collection of crinoids which had been sent him by Mr. J. Braccbridge Wilson 

 from Port Phillip, Victoria; among them were two forms which he described as new, 

 under the names of Antedon wilsoni {Ptilometra macronema, juv.), and A. incommoda 

 ( Compsometra incommoda). 



In 1889 Professor Bell reported upon a collection of echinoderms made at 

 Tuticorin, in the Madras presidency, by Mr. Edgar Thurston, and also upon some 

 echinoderms obtained off the southwest coast of Ireland. Mr. James A. Grieg also 

 recorded some crinoids which had been dredged in Vestlandske Fjord. 



Professor Bell had received some additional examples of the species which he 

 had described in the Alert report as Antedon pumila, and had discovered that the 

 first pinnule was the longest, and not short as he had stated, he having been misled 

 by the broken condition of the original specimens. His Antedon inconimoda was 

 supposed to differ from the earher ^4. pumila through the greater length of the first 

 pinnule, but this dift'erence being now sho\vn to be nonexistent, he now relegated 

 the former to the synonymy of the latter, though, curiously enough, the two are 

 well differentiated on other characters. 



