i897-] StandEN. — Land Mollusca of Ballycastlc. 5 



A, clrcumscrlptus* Johnston.— One characteristic full-grown ex- 

 ample at Murlough, feeding on fungus. 



A. Intermedlus, Normand. — Several specimens under logs, and on 

 a rotten tree-stump in a dark part of the wood at Murlough. One on 

 fungus at Glenshesk. 



Llmax maxlmus, L. — Abundant, and very fine and well-marked, 

 under some rotten timber at foot of a coppice on the roadside between 

 Fair Head and Murlough. Some extremely large shells were obtained 

 from these specimens. 



L. margrlnatus, Miiller. — Very plentiful on the trees in Murlough 

 wood. Nearly all the tufts of Orthotrichum phyllanthemum, which grows 

 so abundantly there, contained the " tree-slug " in all stages of growth, 

 and its tracks could be seen high up on the tree-trunks. 



Agrrlollmax agrestls, L. — This universally common slug was met 

 with wherever we collected, but did not occur very plentifully, and 

 little variation was noticed. 



A. laevls, Miiller. — This species is not given for Antrim in Dr. 

 Scharft's list, but we found it rather common in damp parts of the woods 

 at Murlough under moss-covered stones and old logs. 

 ~ Helix pygrmsea-. Drap. — Two specimens from moss-shakings at 

 Murlough, and a few dead in the " pockets " at Whitepark. 



H. rotundata, Miiller. — Murlough and Glenshesk, not very plentiful, 

 but beautifully marked at the latter place, where the var. Turtotii also 

 occurs. Obtained by Mr. Welch on Rathlin Island, and at Torr Head 

 in 1889. 



H. pulchella, Miiller. — At Murlough the var. costata only occurs, but 

 is not common. In the sandhill " pockets " at Whitepark it occurs dead 

 in great profusion, along with a few alive ; but on the crumbling face of 

 the Chalk cliffs, and amongst the talus at the Ballintoy end of the bay, 

 it is living in myriads. I have carefully gone over some thousands, sorted 

 out from the material brought home from this place, and find very few 

 examples of the ribbed variety — not more than five per cent. Thompson 

 says " the ribbed variety is more common than the smooth (type) on the 

 sea-banks." Dr. Scharff remarks that type and variety are generally 

 found together, but this does not at all agree with my experience either 

 in England, Scotland, or Ireland : indeed I have so often found the two 

 forms living separate, and noted the absence of intermediate forms 

 between type and variety, that I am strongly of opinion that the ribbed 

 form — Helix costata, Miiller — ought to rank specifically. 



H. aculeata, Miiller. — A few nice specimens obtained from moss- 

 shakings from Murlough and Glenshesk ; also dead in the Whitepark 

 " pockets." 



H. lamcllata, Jeff. — This exquisite little shell appears to be generally 

 distributed throughout the district, but we did not obtain more than 

 eight or ten specimens from moss-shakings from any one locality. 



Hi hisplda, L. — Very common, and variable in form. Vzx. concinna 

 appears to predominate in the district. At Murlough a peculiar small 

 dark flat form occurs— Jeffreys' var. subrufa. Along the walk on the cliflf 

 face, going towards Sheep Island, a large, thin, globose, pale form 



