4 PROCEEDINGS OF THE ACADEMY OF [Jan., 



the original forest. But it is to be noted that it is in these places, 

 where the woods have been cleared for a long period of years, that 

 a reduction not in numbers of individuals, but in size may be ob- 

 served. While the evidence is not entirely complete, it seems to 

 point to a reduction in size in those places where the forest has been 

 entirely cleared away and where the animals are now living under 

 conditions of greater dryness than the optimum conditions that obtain 

 in places where the original forest is still more or less undisturbed. 

 The variations treated of in this paper are seen in individuals of 

 these species that are living under the optimum conditions which 

 obtain in the forested sections, as contrasted with those individuals 

 which are found in the dryer, cleared sections. The localities from 

 which these contrasted individuals were obtained are in Manchester 

 Parish, near Mandeville for L. gramdosa; and for L. aureola, the 

 same region as contrasted with the Montego Bay district. 



Lucidella granulosa is found almost everywhere in the region 

 about Mandeville where the conditions are favorable. It is in 

 this locality much more common than L. aureola, which, however, 

 is found plentifully in this part of Manchester. But L. granulosa 

 was not taken at Montego Bay, while a small form of L. aureola 

 was very plentiful at this station. Perhaps the most typical forms 

 of L. granulosa come from the borders of the undisturbed woods 

 in Manchester Parish near Mandeville, and it seems likely that it 

 was from this region that C. B. Adams first collected the form. 

 From the many colonies in the Mandeville region from which I 

 collected these typical forms of this species the Somerset, Somerset 

 Road, and Benmore woods colonies may be selected as furnishing 

 characteristic examples of the normal form. These localities have 

 been described in a former paper;- it will suffice here to state that 

 they were places where the original forest still exists and optimum 

 conditions for the growth of this species obtain. The small forms 

 that are compared with these typical forms were collected at two 

 stations where the forest had been completely cleared, at least 

 near the roads along which the collecting was done, and were near 

 the Sturridge place, some three miles to the southeast of Mandeville 

 village, and along the Kendal Road,^ one mile to the north of the 

 town. A short description of these stations will be necessary. 



- Brown, Variation in some Jamaican Species of Pleurodonte, these Proceed- 

 ings, 1911, pp. 124, 128, 129. 

 ^See map of Mandeville region, loc. cil. these Proceedings, 1911, p. 121. 



