ROEBUCK : ON DENBIGHSHIRE MOLLUSCA. 213 



H. pulchella. One on a wall at Tywyn and one on the 

 summit of the Great Orme's Head ; common on an old 

 wall at Bodscallan composed largely of mortar. 



H. pulchella var. costata. With the type at Bodscallan, 

 plentiful. 



Bulimus acutus. Very abundant with Helix virgata on the 

 short turf bordering Llandudno Bay. A few also occur 

 on wood posts some distance inland in Llandudno town, 

 and I was somewhat surprised to find it common on the 

 • summit of the Little Orme's Head, as I had always under- 

 stood it was only to be found close to the sea. 



B. acutus var. strigata. Llandudno Bay, with the type. 



B. obscurus. Several specimens at Eglwys Rhos, Bodscallan, 



Gloddaeth woods, Gloddaeth mountain top, and Llandrillo. 



Pupa umbilicata. Another species abundant everywhere 

 on the peninsula, Great and Little Orme's Heads, Glod- 

 daeth mountain and woods, Tywyn, Eglwys Rhos, Bods- 

 callan, Llangwystenin, and Llandrillo. 



P. umbilicata var. edentula. With the type on walls near 

 Bodscallan. 



Balea perversa. A few on the wall at Bodscallan. 



Clausiiia rugosa. A common species. Great Orme's Head, 

 Little Orme's Head, Eglwys Rhos, Gloddaeth woods, 

 Bodscallan, Llangwystenin, and Llandrillo. 



Cochlicopa lubrica. Common in Gloddaeth woods, and 

 occurs in greater or less numbers on the Great and Little 

 Orme's Heads, Eglwys Rhos, Bodscallan, Llangwystenin 

 and Llandrillo, Rhos Bay, Tal-y-Cafn and Llanrwst. 



C. lubrica var. lubricoides. One at foot of Little Orme's 



Head, and one at Llanrwst. 

 C. lubrica var. hyalina. In 1877 I took one of this form at 



Tan r allt near the foot of Gloddaeth mountain. 

 Carychium minimum. A few in the woods at Bodscallan. 



