106 



characters. My studies have shown that Dr. Mortensen was right 

 in presuming so, as the shape of the ciliated funnels without any 

 doubt is of the highest classificatory value in this family. Another 

 character hitherto often overlooked and neglected, but evidently of 

 the greatest value for the specific and often also for the generic 

 diagnosis, is the shape of the "miliary granules". 



In genera in which so many species have been described since 

 1908, that Clark's keys to the species is not satisfactory any longer, 

 new keys have been worked out, but when, as in Labidoplax and 

 Protankyra, only few new species have been found, the keys in 

 "The apodous Holothurians" are still fully efficient, as are also the 

 keys to the genera given there. For the Chiridotinae, Clark has 

 given some excellent keys in his "Echinoderms of the Torres Strait" 

 (Department of Marine Biology of the Carnegie Institution of 

 Washington, Volume X, 1921). 



For the opportunity of studying this exceedingly large l ) and 

 for the larger part nicely preserved collection, I beg to express 

 my best thanks to Dr. Mortensen. I am also deeply obliged to 

 Dr. Mortensen for his valuable help and the never failing interest 

 with which he has always favoured my studies. 



In the Archives of the Zoological Museum of Copenhagen, there 

 are some fine drawings of Synaptula vivipara 0rsted, made by the 

 Danish zoologist A. S. 0rsted during his stay on Jamaica in the 

 year 1845. The drawings were exhibited at a lecture in the "Dansk 

 Naturhistorisk Forening" in 1849, but never published. Only a sum- 

 mary of the lecture is published in the first Volume of "Viden- 

 skabelige Meddelelser fra Dansk Naturhistorisk Forening" and in this 

 the genus Synaptula is established. 0rsted's drawings show that 

 he was one of the first or the first to see the development of the 

 eggs as well as several anatomical details. It has therefore been 

 thought desirable to publish his drawings and thus to give him full 

 credit for his excellent observations, cfr. Pl. III. The notes in 0r- 

 sted's hand accompanying his drawings are not in a state making 

 it desirable to publish them. Danielssen and Koren ("Obser- 

 vations sur le développement des Holothuries" in "Fauna littoralis 



!) Clark refers in u The Apodous Holothurians" 88 species in all to this 

 family and since that time only 17 new species have been described. 



