124 



Proceedings of the Royal Irish Academy. 



Pisidium amnicum (Miillei). 



Tellina amnioa, Brown, Mem. Werner. 

 Soc, vol. ii, p. 508, 1818. 



WD ED LD AN 

 FE TY AR DO 



WMSL LE MO 



EM RO CV LH 



WG NC LF WH ME 



SC KG KD DU 



CL NT QC CW wi 



NK LK ST KK wx 



SK MCEC WA 



WG 



llesembles the last shell in its distri- 

 bution, hut has a wider range. Often 

 associated with it in the north-eastern 

 districts ; but Mr. Phillips tells me that 

 in the south lie rarely finds these two 

 species together, though sometimes 

 occurring in the same district, the pre- 

 sent one seeming to favour large rivers 

 and canals, while Sphaerium lacustre 

 occurs most frequently in ditches and 

 sluggish streams. 



only known from a few central and 

 north-western localities. There is, how- 

 ever, a doubtful record for Dublin, 

 which points to the possibility that it has 

 been overlooked in other parts of the 

 country. 



Pisidium subtruncatum Malm. 



Pisidium fontinale, Soharff, Irish Nat., 

 p. 180, 1892. 



WD ED LD AN 



FE TY AR DO 



WMSL LE MO 



EM EO CV LH 



WGNC LF WHME 

 SG KG KD DU 



CL NT QC CWWi 



NK LK ST KK WX 

 SK MCEC WA 



WG 



Generally distributed throughout the 

 mainland, and occurs on some of tbe 

 western islands. 



Pisidium henslowanum (Sheppard). 



WD ED LD AN 



FE TY AE DO 

 WMSL LE MO 



EM RO CV LH 

 WGNG LF WHME 



SG KG KD DU 



CL NT QC CW WI 



NK LK ST KK WX 



SK MC EG WA 

 WG 



An exr-eedingiy local shell, and is 



Pisidium pulchellum Jenyns. 



WD ED LD AN 



FE TY AE DO 



WMSL LE MO 



EM EO CV LH 



WGNG LF WHME 



SG KG KD DU 



CL NT QC CW WI 



NK LK ST KK WX 



SK MC EG WA 

 WG 



Distinctly more local than Pisidimn 

 siibtnmcatiim, but is nevertheless 



