BAGOUS PETRO FROM ASKHAM BOG, 
Rev. Canon W. W. FOWLER, M.A., F.L.S., 
Hon. Secretary to the Entomological Society of London. 
In my British Coleoptera, Vol. V., p. 288, I have described B. petro 
as from various localities ; it turns out, however, that only the speci- 
men recorded from Askham Bog, York, is really to be referred to 
this species, and that the remainder must be referred to 2. dimosus 
of our collections, which is synonymous with B. pefrosus W.C. ; the 
insects very much resemble one another in form and appearance, 
and owing to this and the similarity of names, confusion has arisen 
in more than one instance ; thus Dr. Sharp gives B. perro as synony- 
mous with B. dimosus in the second edition of his Catalogue, p. 31. 
The true B. petro Herbst, however, is a very interesting insect, as 
representing a sub-genus, which ought certainly to have generic 
value: this is He/minthimorphus Cussac, which is distinguished by 
having the first joint of the club (the ninth of the antennze) glabrous 
and shining, and as long as all the following united, whereas in 
Bagous proper the first joint is shorter and pubescent. My single 
specimen is unique as British; it was captured by myself in 
Askham Bog on August 1oth, 1880, in company with the late 
Archdeacon Hey. I have written to the Rev. W. C. Hey to ask if 
he possesses any Bagoi from the locality, but he has none. I shall be 
much obliged if any collectors will kindly allow me to look at any 
specimens of the genus from localities north of Birmingham or 
Derby. The very rare Bagous diglyptus Boh. (represented as British 
by two specimens) was taken by my friend Mr. J. T. Harris near 
Burton-on-Trent. &. tempestivus has been recorded from Repton, 
Burton-on-Trent, and 2. glabrirostris has occurred in Scotland, but 
with these exceptions all, or nearly all, the records are from localities 
south of the Midlands; one specimen only has been found in 
Treland, which has been referred to &. Zutulosus. 
The species of Bagous may be obtained by examining the damp 
moss at the edge of pools ; they may often be found in the water-net. 
They are very sluggish and easily passed over, but when one is found 
there are probably many others in its company, as the species are, in 
most cases, more or less gregarious. 
LincoLn, February 18th, 1892. 
Naturalist, 
