(Saertryk at Vidensk. Medd. fra Dansk naturl 



Foren. Bd. 85, 1928.) 



Papers from Dr. Th. Mortensen's Pacific Expedition 



Th. M orten sen on his different expeditions, except those found 

 at New Zealand and the Auckland-Campbell Islands l ) which were 

 described by Dr. Mortensen himself (Papers from Dr. Th. M or- 

 ten s en's Pacific Expedition 1914 — 16, XXIX. Th. Mortensen: 

 Echinoderms of New Zealand and the Auckland-Campbell Islands, IV). 

 Descriptions of the rather few specimens of tropical and pacific Syn- 

 aptids from older collections in the Copenhagen Museum are also 

 included. As by far the largest number of specimens mentioned in 

 this paper, were collected by Dr. Mortensen, the collector is 

 only named, when the specimens dealt with are found by others; 

 thus in all places where the collector is not mentioned, the speci- 

 mens belong to Dr. Morten sen's collections. 



The collection includes 92 different forms of Synaptids, three of 

 which are described as new varieties. Of the 89 species described, 

 47 are new to science, and 10 are old species which were on account 

 of the more or less incomplete previous descriptions, hitherto re- 

 garded as synonyms of other species. Of each species a complete 

 description is given, as far as possible, and all characters of sy- 

 stematic value are illustrated. Histological examination on sections 

 of more interesting organs as eye spots, gustatory organs, ciliated 

 funnels, gonads and the different parts of the alimentary canal has 

 not been made. When I began the examination of the collection, 

 Dr. Mortensen called my attention to the variation of the ciliated 

 funnels, as he supposed them to offer rather valuable systematical 



present paper deals with the Synaptids collected by Dr. 



S. G. Heding. 



With Plates II — III 



1914 — 16. 



XLVI. 



Synaptic! ae 



by 



J ) In the paper on the Echinoderms from New Zealand and the Auckland- 

 Campbell Islands Dr. Mortensen describes 8 different Synaptids, 3 of 

 which Ch. nigra, Ch. carnleyensis and Tr. tnicrourna are new to science. 



