The human transport of animals across the Northern Atlantic 173 



Araneae; Chilopoda, Diplopoda, Oniscoidea {Isopoda terrestriaY; and shell-bearing 

 Mollusca. Quantitative figures were pursued only for Carahid beetles; of these 

 every observed specimen was captured. The predominating or otherwise charac- 

 teristic plants were noted in order to describe the nature of the locality in a simple 

 way. 



The identification of animal and plant species was carried out by myself, with 

 the exceptions accounted for below. 



Account of collecting 



I. Poole (Dorset), 21-23.V. 54.— The actual site of the old ballast-place is still 

 known and, according to the late Borough Historian, Mr. H. P. Smith, was 

 marked on older maps as "Ballast Quay". It was situated on the eastern tip of the 

 Hamworthy Peninsula (map, fig. 20) and the ballast-heaps were reproduced on an 

 engraving from the year 1833 (fig. 21), generously put at my disposal by Mr. 

 Edwin F. J. Mathews, the present Borough Historian. The intensity of ballast 

 transport from Poole to Newfoundland has already been described (p. 162 a.f.). 

 The actual spot has now become industrialized and built over with wharfs and 

 stores but there is a small open patch of grassland left, less than 100 metres south 

 of the previous ballast-heaps, and here, as well as on similar ground inside the 

 new power station, collecting was carried out. 



a— Tip of Hamworthy Peninsula, immediately inside the concrete quay. Hard, 

 dry, open soil (artificial filling of gravel and clay, with pebbles and pieces of brick). 

 Vegetation (according to Mr. Mathews similar to that of the true Ballast Quay 

 during the first decade of this century): 



Bellis perennis Sarothamnus (Cytisus) scoparitis 



Cirsiiim arvense Trifolium campestre (prociimbens) 



Dactylis glomerata T. pratense 



Lotus corniculatus Ulex europaeus 



Poa pratensis Vicia angustifolia 



Plantago coronopus V. cracca 



P. lanceolata Vulpia bromoides 



P. media 



The collected animal species (vide list, p. 186 a.f.), very few in number due to 

 the extreme dryness of soil, were distributed among the following groups (num- 

 ber of "emigrant" species^ in brackets): 



^ For Chilopoda, Diplopoda, and Oniscoidea, the collective name " Iso-Myriapoda" has 

 been used. 



^ "Emigrants" are here understood to mean only those species which are regarded as 

 European introductions in North America. 



