292 
MOLLUSCA. 
H. hispida, and in its ordinary depressed form ; still the typical specimens 
of these two Helices are very distinct in appearance, but through their 
varieties would almost seem to unite. 
“ H. circinata , Fer.” 
I cannot perceive any difference between some of my North of Ireland 
specimens of H. concinna, when completely denuded of their hairs, and a 
shell so named which I owe to the kindness of Mr. Alder. 
H. rufescens, “ Penn.” 
This species is common to the southern two-thirds of the island : as far 
North as Banbridge in the County of Down it has been found, and on 
old walls at Rostrevor, 1848, by the Rev. G. Robinson. 
H. Pisana, Mull. 
This fine, and local species, was first noticed as Irish in Turton’s Cata- 
logue (p. 8), from specimens collected at “ Balbriggan Strand,” or, as 
more correctly given by their discoverer, M. J. O’Kelly, Esq., in the edi- 
tion of Pennant’s British Zoology published in Dublin in 1818, “ near 
Balbriggan, on the County Meath side of the stream that divides this 
County from Dublin,” vol. iv. p. 369. By Mr. O’Kelly and Mr. T. W. 
Warren I have been favoured with specimens of H. Pisana from this 
locality. My friend R. Callwell, Esq., of Dublin, informs me that this 
species has been found at another, though not far distant, station, by Mr. 
Joseph Humphreys, on the North side of the river Boyne, three miles 
east of Drogheda, and ten North of Balbriggan. Iveragh, Kerry, Mr. 
Andrews. 
II. virgata, Mont. 
In the North, East, and South, this species is found, but in the West I 
am not aware of its presence. It is a local species, occurs on the marine 
sand-hills at Ballycastle, in the North of the County Antrim ; Dundalk 
(County Louth) ; Dublin, Wicklow, Youghal, and Cork; and at the in- 
land localities of La Bergerie, near Portarlington, and Baliitore (County 
Kildare). Finnoe, County Tipperary, Mr. Waller. H. virgata is one of 
the species which seems to follow no rule in the choice of its abode or in 
that of its associates, or rather whose absence from or presence in parti- 
cular districts cannot be accounted for ; it will be abundant on sea-banks 
at one place, and for a hundred miles again will not appear in similar 
localities. Some authors have remarked, from their own accurate observ- 
ation in particular localities, that it is never found with H. ericetorum ; 
and Dr. W. H. Harvey, in supplying me with notes of four inland and 
marine stations in which he had observed it, remarked, “ I have noticed 
that this species is never found mixed with H. ericetorum, nor is it generally 
in the same neighbourhood ; ” yet not very far distant from one of those 
alluded to both species are found in company,* and on the same plant. 
In the collection of T. W. Warren, Esq., of Dublin, is a very fine series 
from one locality, Portmarnock, presenting every variety of colour and 
* In Dr. R. Ball’s cabinet, and collected by him near Howth off a single 
plant of Beta maritima, are specimens of a pure white colour, others of a uni- 
form dark chocolate brown, in addition to the more common state, white with 
brown bands and the reverse. 
