94 



[Proc. B.N.F.C., 



Brandt, T. pygmaus G. O. Sars, Oniscus asellus Lin., and Porcellio 

 scaber Latreille, were observed at an altitude of 1,100 feet on 

 Benevenagh. Porcellio pictus Brandt was found at Ballintoy 

 Churchyard, on walls at Ballycastle, and on Fair Head, Co. 

 Antrim. Previous notes on Woodlice in the district visited have 

 been published.* n. h. f. 



PORIFERA. 



Two species of Fresh-water Sponges, Heteromeyenia ryderi 

 Potts, and Spongilla fragilis Leidy, were collected in the lakes 

 on Fair Head, where they grew in numbers under the shelter of 

 large stones. 



Heteromeyenia ryderi was found in Doo Lough and a few 

 yards down the stream draining the lake. It also occurred in 

 great abundance in Lough-na-Cranog. Although softer in texture 

 than mature specimens, and with rather slender spicules, all the 

 specimens collected may be assigned to the form pictovensis of this 

 very variable species. Gem mules must have been formed in great 

 numbers during the previous season, as the young sponges 

 appeared to be closely packed with them. An examination 

 showed that most of the gemmules had germinated, thus con- 

 tributing to the probably rapid growth of the young sponge. This 

 is the second record of the species for Co. Antrim. 



Spongilla fragilis was found in Lough Fad. The specimens 

 were interesting on account of the presence of the pavement-layer 

 of gemmules formed the previous season. Some of the gemmules 

 had germinated, giving rise to small patches of sponge, which did 

 not yet extend nearly to the limits of the old pavement-layer of 

 gemmules. This is the third record of the species for Ireland, the 

 first being for Co. Mayo, where it was found during the Clare 



*Proc. R.I. Acad., Vol. XXIX, (B), No. 4, 191 1 ; Irish Nat., Vol. 

 XXII, p. 45. 



