J 82 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



Selenemetra FiNSCHir (Hartlaub), New Britain. 

 DicHROMETRA PALMATA (J. Muller), Red Sea. 

 Dichrometra protectus (Liitken), New Guinea. 

 Decametra modica a. H. Clark, Bagamoyo. 

 Oligometra occidentalis a. H. Clark, Bagamoyo. 

 Tropiometra carinata (Lamarck), Fouquet Reef, Mauritius. 

 Tropiometra picta (Gay), Rio de Janeiro. 

 Ptilometra macronema (J. M tiller), Koombana Bay. 

 Antedon adriatica A. H. Clark, Trieste. 

 Compsometra incommoda (Bell), Koombana Bay. 

 Iridometra mauritiana a. H. Clark, Mauritius. 

 Leptometra phalangium (J. Miiller), Nice. 

 Leptometra phalangium (J. Miiller), Sicily. 

 Hathrometra prolixa (Sladen), Norwegian Sea. 

 Hathrometra prolixa (Sladen), Spitzbergen. 

 (The specimens given in small capitals are cotypes of the species.) 



HISTORICAL ACCOUNT OF THE COLLECTION. 



The first notices of specimens in the Museum fiir Naturkunde were 

 pubHshed by Prof. Johannes Muller, who made a number of them 

 the types, and others the types in part, of new species described in 

 1841, 1843, and 1849. 



In 1869 Prof. E. von Martens recorded some specimens which 

 had been brought back by Count von der Decken from his trip to 

 East Africa, while in 1877, and ag^in in 1887, Prof. Lud\vig von 

 Graff mentioned, as hosts for Myzostoma described by liim, a few 

 more. 



In the preparation of the Challenger report upon the comatulids 

 (published in 1888) Dr. P. H. Carpenter visited the museum and 

 studied the collections, paying particular attention to the types of 

 Miiller's species; but he never pubUshed any detailed account of 

 them, merely including references to a few forms in his monograph. 



In the following year Prof. Th. Studer published some records of 

 comatulids which had been collected by the Gazelle during her trip 

 to the East Indies and to Western Australia. These records were 

 mostly indefinite, giving only the genus to wMch the animals be- 

 longed. Later the material was sent to Doctor Carpenter for more 

 accurate determination, but he was unable to complete a report 

 upon it before he died. 



In 1890 Dr. Clemens Hartlaub pubhshed preUminary diagnoses of 

 several new species based upon the material in tliis museum, in the 

 following year describing them in greater detail and figuring them, 

 and also recording many others not previously noticed. 



The specimens recorded by Prof. Ludwig Doderlein in the Fauna 

 Arctica, wliich were collected by Romer and Schaudinn at Spitz- 

 bergen, are in the collection of this museum. 



In 1909 the Gazelle crinoids were sent to the present author; two 

 new species were described from among them, and later a general 



