A, E. Verrill—The Bermuda Islands. 735 
Great Slug. ( Veronicella Schivelye Pilsb.) 
Figures 84, 1a, 1b, le. 
Although this is not known to occur elsewhere, it seems desirable 
to mention it here, because it may, perhaps, be found to have been 
introduced from the West Indies. 
14 Boece tas 
Figures 84, 1a, 1b, 1c.—Great Slug (Veronicella Schivelye) ; 1a, general view, 14 
natural size; 1b, under side of head, enlarged ; Le, side of head. 
It is very nocturnal in its habits ; most of those taken were cap- 
tured at night by the use of a lantern. They were mostly found 
crawling on limestone fences and on the sides of stone buildings. 
Some were 12 to 15 inches long and over an inch wide in extension. 
The color is dark slate-gray, almost black, or more or less mottled. 
It secretes a large amount of very sticky slime, when irritated, but 
does not ordinarily leave a trail of slime behind it, when it crawls 
naturally. It is said to be common in some of the graveyards. 
37.—Introduction of Injurious and Useful Insects. 
a.—Insects mentioned by the Early Writers. 
The early writers refer to a few insects that attracted their atten- 
tion, either because they were particularly injurious or because of 
