LEPTOCL1NUM USTKKIANUM. 



51 



fronds and stems of Fncitx #<>rr<tti<* and roots of Cysto- 

 xcint t'' 



FIG. 112. Leptoclinum Listerianum. x 4. (After Lister, loc. elf.) 

 The arrows show the excretory orifices. 



ENGLAND. Brighton, Sussex (Litter [and Merrt- 

 Jield]). [Grwyllyn-vase, Swanpool, Pennance, etc., 

 Falmouth, Cornwall (Cod,-*).] 



CHANNEL ISLANDS. [Guernsey (Austed $ Latham).] 



First record. Lister, 1834. 



' 



' 



. 



. 







'". -\ 

 " 



PIG. 113. Leptoclinum Listerianum. x 20. (After Lister, loc. cit.) 

 " " a, ledges on the interior of the branchial sac, each ending at a 

 moveable spiral process in front, seen in two of the animals ; b, the 

 heart of one of them ; c, vent of the same, with the viscera imper- 

 fectly seen/' The arrows, indicating the direction of the currents, 

 show the branchial apertures and excretory orifices. 



This species is distinguished from L. gelatinosum 

 by the circle of white spots around the apertures. 



