38 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



(Specimens in the Hamburg Museum.) 



Tropiometra andouini. 



Antedon carinata. 



Tropiometra encrinus. 



Tropiometra carinata. 



Tropiometra picta. 



Antedon Isevipinna, sp. nov Lamprometra protect. 



Antedon sequipinna, sp. nov Lamprometra proiectus. 



Antedon imparipinna, sp. nov Lam.prometra protectus. 



Antedon variipinna, sp. nov Amphimetra variipinna. 



Antedon erenulata, sp. nov Amphimetra crenulata. 



Antedon aculicirra, ep. nov Craspedometra acutidrra. 



Antedon liulovid, sp. nov Craspedometra acutidrra. 



Antedon bipartipinna. sp. nov Craspedometra acutidrra. 



(Antedon australis, nom. nov.) Craspedometra acutidrra. 



Actinometra Solaris Comatula Solaris. 



Actinometra robusta, sp. nov Comatula Solaris. 



Actinometra parvidrra Comanihus parvidrra. 



Actinometra multiradiata. .. . . | Ca Pi^ter sentosa. 



[Capillaster multiradiata. 



Actinometra grandicalyx, sp. nov Comantheria grandicalyx. 



Actinometra meyeri, sp. nov Comanihus annulata. 



Actinometra bennetti Comanthus bennetti. 



In the same year Prof. F. Jeffrey Bell invented a very ingenious, but unfortu- 

 nately impracticable, scheme for the expression of the specific characters of the 

 comatulids by means of so-called "specific formulae," and gave a list of all the 

 species known to him with their specific formulae attached; in this list he inserted 

 the names of some undescribed species which had been obtained by the Alert in 

 Australia, and he added an appendix describing Actinometra annulata (Comanthus 

 annulata) from Cape York. Later in the same year he very briefly diagnosed a 

 new form from the Straits of Magellan, Antedon magellanica (Florometra magell- 

 anica), treating it as a variety of the arctic Heliometra glacialis. 



It was in 1882 also that Greeff reported the occurrence at the island of Rolas 

 in the Gulf of Guinea, near Sao Thome, of a comatulid which he called Antedon rosa- 

 cea, but which is probably the same as the species afterwards named by Hartlaub, 

 from specimens obtained on the Ivory Coast, Antedon hupferi. This curious 

 species is the west African representative of the Brazilian Antedon dubenii and of 

 the European Antedon bifida. 



Early in the following year Carpenter reviewed Bell's system of formulation, 

 pointed out numerous errors, and gave a revised list of all the species which he 

 could determine; and Prof. Edmond Perrier diagnosed a new species of Eudiocrinus, 

 E. atlanticus (Pentametrocrinus atlanticus). The genus Eudiocrinus was hitherto 

 supposed to be peculiar to the Pacific being hi fact named for the Pacific Ocean 

 and the discovery of a species hi the Bay of Biscay was an occurrence of more than 

 ordinary interest. 



In 1883 also Prof. Percival de Loriol discussed the echinoderms of Mauritius, 

 noting the occurrence there of Tropiometra carinata. 



The report on the collections made by H. M. S. Alert in Australian and East 

 African waters was published by Bell hi 1884. In it certain species, badly in need 



