158 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



confusion, but since I have seen specimens from Plymouth 

 and Jersey which have all the distinguishing characters 

 of the Haliclijstus auricula described by Clark in his 

 Prodromus (12) and again with great detail in a fully illus- 

 trated monograph in the Smithsonian Contributions, 1878, 

 (14) I prefer to follow Clark in identifying his species 

 with the European Lucernaria auricula, Eathke (2). 

 Haeckel on the other hand considers it probable that 

 Halicly sties auricula, Clark, is confined to the Ameri- 

 can side of the Atlantic, and identifies L. auricula, 

 Eathke, with L. octoradiata, Lamk., which is described as 

 a second European species by Clark. Eathke' s figures 

 as far as they go support Clark's view. 



It may be noted further that Lucernaria auricula, 

 Eathke, was confused by a number of the earlier writers 

 with L. auricula, Fabricius (1), one of the Cleistocarpidae 

 [Manama auricula (Fab.) Clark, Halicijathus lagena 

 (Miiller) Haeckel] . 



Halicly stus, sp. 



The third species of Lucernarian found at Port Erin 

 differs materially from any species previously described as 

 far as I know. The members of this family seem parti- 

 cularly liable to abnormalities affecting more especially 

 the number and arrangement of the tentacles, as noticed 

 under Bepastrum, and I am loth to establish a new species 

 on the scanty material at present available. After some 

 consideration, I refer this species provisionally to the genus 

 Halicly stus, for though it presents considerable divergence 

 from the 3 species of that genus which have been already 

 described, yet its structure, so far as I have been able to 

 make it out, is in accordance with the generic definition 

 both of Clark and Haeckel except as regards one point 

 which is not I think of very great importance. 



Three examples of this form were found last year : 



