205 



had only one little specimen and a fragment, we cannot lay too 

 much weight on these characters, and there is in my opinion 

 hardly any doubt, that the specimens from Kilisut Harbour belong 

 to the species clarki. 



In "The Apod. Holoth." Clark refers nine species to the genus 

 Leptosynapta, and since then eight new species, all referred to this 

 genus, have been described. The collection at hand includes, though 

 no European specimens are included, 487 specimens representing 15 

 different species which all belong to the genus as it is characterized 

 by Clark in "The Apod. Holoth.". The study of these beautifully 

 preserved specimens shows that the genus, as diagnosed by Clark, 

 includes distinctly different groups, and that it will be the most 

 reasonable to separate the six species 



Synapta roseola Verrill 1874, 

 Epitomapta tabogae Heding, 

 Synapta ooplax v. Marenzeller 1881, 



— var. lœvis Bedford 1889, 

 — acanthia Clark 1890, 

 Leptosynapta multipora Clark 1924, 



from Leptosynapta and establish three new genera or subgenera 

 Epitomapta, Patinapta and Eupatinapta with the species tabogae, 

 ooplax and acanthia as the genotypes. When these species are 

 separated from Leptosynapta, the diagnosis of the genus thus re- 

 stricted must be a follows: Tentacles 10 — 12, usually pinnate. 

 Digits few, 1 — 9 on each side of the tentacle (in minuta Becher 

 the digits are said to be entirely wanting). Sensory cups are usually 

 present on the tentacles and eye-spots are wanting. The radial 

 pieces of the calcareous ring are perforated for the nerves, and a 

 cartilaginous ring is wanting. Polian vesicles few 1 — 5, and the 

 stone-canal single and unbranched. Ciliated funnels are always 

 present (in minuta there is but a single one), and of very varying 

 shape. The calcareous deposits are often slightly different in the 

 two ends of body, those from the posterior end being the larger. 

 The anchor-plates have normally seven large teethed holes. A well 

 defined bridge is wanting. 



To the genus thus characterized twelve of the species at hand 

 must be referred. The study of these shows that the American 



