Mr. A. H. Hassall's Catalogue of Irish Zoophytes. 367 



was ignorant when I published a former paper on Irish zoophytes. 

 Mr. Thompson has also !)een the fortunate discoverer of one or two 

 other undescribed and beautiful species of Tubuliporidce. 



]VIonksto^^'n, Dublin Bay, on the frond of Lamiiiaria digitata : 

 not common. 



T. lobulata ? Polypidom six-lobed ; cells irregular, united. — A. 

 H. H. Polypidom divided into six lobes of unequal size ; tubes 

 joined, of irregular form and size. See Plate X. fig. 1,2. Of 

 the above Tubulipora I have met "with but a single specimen ; its 

 appearance and development however is so different from any 

 hitherto described, that I conceive myself justified in considering it 

 to be a distinct species. 



Cellepora ramulosa. Not common : obtained by trawling off 

 Howth. 



C. bimucronata. Cells ovate, disposed in a single layer ; aper- 

 tures circular, with a slight excavation below, armed on each side 

 with a short strong process.- — A. H. H. A species of Cellepora is 

 described by Lamarck under the name of Cellepora bimucronata, and 

 which I conceive to be identical with that defined above. Although 

 I am inclined to consider this as a distinct species, I yet do not feel 

 assured that it is really so ; if not, it is to be regarded as C. pu- 

 ?nicosa in the first stage of its formation. See Plate IX. fig. 1. 



Berenicea hyalina. On the roots of Laminaria digitata, Bray 

 Head: not uncommon. 



Lepralia nitida. Lepralia costata or thoraciformis would not be 

 an inappropriate name for this curious species, resembling, as each 

 cell so accurately does, a miniature human thorax ; the cross pieces 

 representing the ribs, and the broad band into which these are in- 

 serted being analogous to a sternum. A distinct spine is frequently 

 to be observed on each side of the lower angle of the mouth of the 

 cell. 



On stones east of Kingstown harbour : rare. 



L. coccinea. On stones below low-water mark, east side of 

 Kingstown harbour : common. 



L. variolosa. On a bivalve. Sea Point : rare. 



L. ciliata. " Cells ovate-globose, frosted ; the aperture con- 

 tracted, circular, armed with from five to seven long spines." 



The lower border of the mouth of each cell is prolonged into a 

 spout-like process, beneath which, in perfect specimens, a pointed 

 tooth, somewhat shorter than those surrounding the aperture, is 

 visible. See Plate IX. fig. 2. 



Rather abundant on stones, shells, and fuci, Dublin Bay. 



The following species of Lepralia have never, I believe, been de- 

 scribed as British zoophytes ; whether they are altogether new I 

 cannot say. I have not, however, been able to identify them ivith 

 certainty with any hitherto described, although 1 have consulted 

 numerous works with this view ; among others, Delle Chiaje's ' Anim. 

 senza Vert, di Napoli,' in which many Lej)ralice are figured. 



L. appensu. Cells somewhat raised anteriorly, frosted, larger 

 above than below ; aperture quadrangular, surrounded by four or five 



