ZOOLOGICAL AND BOTANICAL ASSOCIATION'. 73 



Lacroixii (Buck's Catal. ; FVustra distans of Hassall). Kingstown 

 Harbour. Hassall. Annals, Nat. Hist., vii., p. 369. 



Dr. Johnston's figure (pi. 57, fig. 11) of the Flustra dint an* 

 very fairly represents M. Lacroixii, as developed in sheltered situ- 

 ations. The cells are then completely surrounded by very delicate 

 spines, which bend inwards. Mr. Busk's description, "occasion- 

 ally a marginal spine on each side above," does not apply to the 

 species in its perfect state. 

 Lepbalia 



reticulata. Antrim, B. D. R., 1857. List of Polyzoa, Hincks. 

 fissa. Ditto. 

 annulata. Ditto- 

 pertusa. Ditto. 

 Landsborovii. Ditto, 1858. 

 Woodiana (Busk, Polyzoa of the Crag). Ditto. 

 eximia, n. sp. (Hincks). Ditto. 

 alba, n. sp. (Hincks). Antrim. 

 discoidea (Busk). Antrim. 

 Cellepoba 



armata, n. sp. (Hincks). Antrim, B. D. R. 1858. 



tubigera (Busk). On stems of Zoophyte, &c. (Trin. Coll. Coll.). 



avicularis n. sp. (Hincks), (Trin. Coll. Coll.) 



Note. — Hippothoa sica (Couch). Mr. Thompson has recorded 

 this (supposed) species as found in Belfast Bay; there is little 

 doubt, however, that it is not a distinct form at all, but only an 

 injured or immature state of one of the ^Eteas (Anguinaria). In 

 this genus the creeping fibre swells out into clavate expansions, 

 from which the cells spring, and when the latter are absent it 

 bears the closest resemblance to a Hippothoa. I believe that Mr. 

 Couch's H. sica was founded on specimens of Mtea recta (mihi), 

 in which the cells were partially developed or had been broken 

 off, a small tubular portion only remaining.* This species I have 

 obtained abundantly in the Isle of Man, and it may be expected 

 to occur on the Irish coasts. 



• I have found uEtea recta in this condition on Pinnas from the coast of Cornwall, 

 the scene of Mr. Couch's researches. 



ZOOL. & PBOC SOC. — VOL. II. L 



