30 ARIONIDA. 
Genus.—GEOMALACUS Allman. 
Genital pore near the base of the upper tentacles ; caudal gland 
opening by a transverse slit; dody rounded at caudal extremity (not 
pointed as in Arzor); shell solid. 
G. MACULOSUS (spotted) Allman. PI. I.,f. 5. 
ody cylindrical, dark grey ; spotted on body and mantle with 
yellow or white ; s/e// solid, and shaped like that of a Lzmax. 
This beautiful species was discovered in 1842 in Kerry, 
near Lough Caragh, by William Andrews. Dr. Scharff 
has taken it at Darrynane, in the extreme west of Ireland, 
up to an elevation of 1,000 feet, and also at Castletown, 
Berehaven, near Glengariff, and at Cork. Besides the 
above British localities, it is only known to exist in 
Portugal. 
Dr. Scharff says :—‘ The dark grey lichens [on which 
it feeds] with the white and yellow fructification conceal 
the slug perfectly, and there is no doubt that we have here 
a most striking instance of protective colouring.” 
Mr. T. Rogers, of Manchester, informs me that he 
once kept one of these slugs alive for more than two 
years, in both of which it produced fertile eggs; the 
young ones, however, died when they had attained about 
half their full size. 
The figure of this slug I have copied with Dr. Scharff’s 
kind permission from the excellent figure in his “‘ Slugs 
of Ireland.” 
