26o The Irish Naturalist. November, 



Lactuca muralis in King's County. 



Rev. R. M. Miller has sent me specimens of this rare plant from King's 



Connt}'. He writes, under date July 25, " I found it on a wall, growing 



locally but plentifully, near Leap Castle, as I was driving home from a 



country church yesterda}-." The Wall Lettuce, which is probably not 



native in Ireland, is previously recorded from seven counties, all in the 



south-eastern half of Ireland. 



R. L1.OYD PRAEGER. 

 Dublin. 



An Immigrant Moss. 



In the journal of Botany for September Canon Lett describes a new 



species of Hypopterygium {H. i7nviigrans) noticed for some years past b}' 



.Mr. Greenwood Pirn on pots in his greenhouse at Monkstown, Co. 



Dublin. The origin of the plant is unknown ; the genus to which it 



belongs has a tropical distribution. 



ZOOLOGY. 



Rare Woodlice from Co. Dublin and Co. Down. 



While collecting moss and dead leaves in Bushy Park, Dublin, near the 

 house, for me, Mr. Praeger obtained many specimens of Tfichoniscus 

 roseus, the beautiful rosj'-coloured woodlouse. In April last, shortly 

 afterwards, while hunting for land-shells in the fernery and green-liouse=i 

 we found it in profusion, fine brilliantly-coloured specimens rather 

 larger than usual. Next day Mr. Praeger and I, while searching a mossy 

 bank about a mile from the house for minute mollusca, found it again 

 fairly plentiful, but not so large nor so bright in colour as in the green- 

 houses. Since this Mr. Arthur Stelfox and I have obtained it in the 

 garden at Oakleigh, Belfast. It is abundant under leaves of Rhubarb, 

 A search in the greenhouses was without result so far as Trichovisciis was 

 concerned, but we found plent}' oi Porcellio dilatatus''^ ^ hitherto only found 

 in two Irish stations, one of them on the north side of Belfast. 



A" few days later I was at Dickson's nurser}', Newlownards, and here 

 Irichoniscus roseus is almost everywhere under pots, boxes, and rubbish 

 heaps, near but not in the greenhouses. These, like the Oakleigh speci- 

 mens and those from the following localit}', were both smaller and duller 

 in colour than the fine Bushy Park specimens. With them were a few of 

 the common T. pusillus, and the rare Porccllio dilatatus again, but not so 

 common as at Oakleigh. Among the latter was one woodlouse I had 

 never seen before. Prof. G. H Carpenter kindly identified it for me as 

 Me/opono> thus pruivosus, 'BrSiwCit'^. To-day I find T/ic/iom'scus rosei/s a^j^ain, 

 sparingly under pots resting on fine gravel in the vinery at Craigowen, 

 Craigavad, Co. Down, with T. pusillus and two other common species. 



^ /. Nat., 1894, PI. 2, fig. 8. 

 2 Id. PI. 2, fig 12. 



