no. 180S. RECENT AFRICA'S CRINOIDS^-CLARK. 



( ? R. weberi) in the Straits of Sunda ; the other was a new species of 

 Pentametrocrinus. 



The work of the Prince of Monaco has added a great deal to our 

 knowledge of the crinoids of the deeper waters off northwest Africa. 

 Much information is contained in short papers published by the 

 Prince himself and by Professors Kcehler and Richard. All the data 

 acquired has recently (1909) been presented in magnificent form 

 under the authorship of Professor Kcehler. 



It is very remarkable that the Princesse-Alice should have obtained 

 only two new species, but the lack of quantity is more than com- 

 pensated by the interest attaching to one of them, Gephyrocrinus 

 grimaldii, representing a second genus of Hyocrinidse, first described 

 in a preliminary paper by Professor Kcehler and Dr. F. A. Bather, 

 jointly, in 1902. 



The investigations conducted by the Cape of Good Hope Govern- 

 ment into the marine resources of that colony had resulted in the 

 accumulation of most excellent collections of echinoderms. These were 

 turned over to Prof. F. Jeffrey Bell for determination, and he found 

 among them four species of crinoids, three of which he described as 

 new, assigning them all to systematic positions very remote from 

 those they in reality occupy; his fourth species was misidentified. 

 These four species are : 



Antedon capensis = Tropiometra carinata. 



Antedon sclateri = Pachjlometra sclateri. 



Antedon rnagnicirra = Crotalometra magnicirra. 

 Actinometra parvicirra = ComantTius waldbergii. 

 In his report upon the stalked crinoids of the Siboga expedition, 

 which appeared toward the close of 1907, Professor Doderlein figured 

 the species of RMzocrinus dredged by the VaUivia off Somaliland, 

 calling it, most appropriately, RMzocrinus cliuni. 



Mr. & Herbert C. Chadwick in 1908 communicated to the Linnsean 

 Society of London a short paper upon the crinoids collected by Mr. 

 Cyril Crossland on the coast of the Sudan during the course of the 

 investigations of the marine biology of the Red Sea under the direc- 

 tion of Prof. W. A. Herdman. Six species are listed, four of which 

 are new to the region ; these are : 



Antedon serripinna = Colobometra cliadwicki. 

 Antedon parvicirra = Iridometra xgyptica. 

 Antedon marginata = ? Steplianometra marginata. 

 Antedon imparipinna = Dichrometra protectus. 

 Antedon palmata ■■= Dichrometra palmata. 

 Antedon savignyi = Heterometra savignii. 

 Mr. Chadwick himself was not certain of the correctness of his 

 determination of Antedon marginata, and in a review I took the 

 liberty of stating that Antedon serripinna and A. parvicirra were 



