ALGOLOGICAL NOTES. oilay, 
the last three years. Though a very shy and retired species, 
seldom venturing from its hiding place in dusk or during dull 
wet weather, it is a most pernicious and destructive slug to 
tender transplanted annuals, doing more mischief in a short time 
than the ZL. agrestis. The eggs of this species appear to be 
deposited during the winter, and in April and May the young 
shew themselves, haying attained to the length of half-an-inch. 
This species is generally described as dark grey, but the gene- 
rality of the specimens collected have been of a fulyous or tawny 
colour on the back, becoming of a paler hue towards the margin 
of the foot. One specimen has occurred, which was nearly black. 
It attains to the length of more than two inches, when in motion; 
when at rest the strongly carinated back is beautifully arched. 
It may be asked how has it happened that this large and very dis- 
tinct species has been overlooked so long? Has it been introduced 
recently? And has it been brought to this neighbouroood in 
ballast ? 
XLIV.—Algological Notes, 1862. By Guoran S. Brapy. 
My searches amongst the alge during the past season have not 
been rewarded by the discovery of any species new to our district ; 
yet the following seem of sufficient interest to warrant brief re- 
cord :— 
Lirosipuon Laminaria, Harv. 
On the frond of Alaria esculenta, near low water mark, at 
Whitley Rocks. 
Eorocarpus FAscrcuLatus, Harv. 
On fronds of Laminaria, at low water mark, near Cullercoats. 
Ectocarrus Murtensit, Ag. 
This interesting species I find in great abundance near and 
beyond low water mark, on a patch of rocks south of the Sun- 
derland docks. The rocks are coated with a deposit of fine mud 
—a condition which seems almost essential to this plant. It 
