Insects. 8999 
inform any one that Heterocerus arenarius, Asw., Agabus sexualis, 
Reiche, and Ocypus Sauleyi, Reiche, were described from British 
specimens. It is to Mr. Rye himself that I am indebted for specimens 
of Atomaria fumata, E'r., or at least of a species bearing that name ; 
and the existence of Agathidium piceum, #r., and Acritus punctum, 
Aubé, in Dr. Power’s collection (one sent by me from Weston), might 
have given him some clew to the localities of those species. Athoiis 
difformis, Lac., will be found in Mr. Waterhouse’s ‘ Catalogue’ under 
that name, only he regarded it as a synonym of A. cavus, Germ., which 
M. Caudéze states not to be the case. Tychus ibericus, Motr., Homalota 
celata, Hy., and Stenus pumilus, Zr., will be found recorded in the 
‘Annual’ for 1855. 
Many persons, I believe, with myself will see with regret Mr. Rye’s 
somewhat uncalled-for attack upon the arrangement adopted by me, 
and stigmatized by him as “foreign.” He is probably unaware that 
it was laid down by Stephens, and perfected by our most indefatigable 
entomologist, Mr. T. V. Wollaston, to whose works I would refer any 
one for an exposition of its merits. It is, of course, however, com- 
petent for Mr. Rye to consider himself of equal authority in such 
matters. 
I regret that, through great haste, several species were omitted in 
my ‘Catalogue.’ 
Ptilium saxonicum, Gillm., and P. discoideum, Gillm., were, how- 
ever, omitted on the authority of the Rev. A. Matthews, who con- 
siders the examples on which he introduced them to be varieties of 
already-recorded species. 
I have now only to give the localities for some of the other Coleoptera 
introduced by me. 
Dromius oblitus, Boield. This is the variety of D. sigma men- 
tioned by Dawson as being found in the Isle of Wight. It is 
described by De Boieldieu as from the Pyrenees, and is regarded by 
Dr. Schaum as a variety of D. nigriventris, Thoms. (fasciatus, Gy/ll.), 
which is very probably the case. It has no connection with the true 
D. sigma. 
Colymbetes (Ilybius) 6-dentatus, Schiddte. Hitherto confounded 
with C. obscurus, Marsh., from which, and from all other members of 
the genus, it is at once distinguished by the dentate claws of the inter- 
mediate tarsi of the male. I have obtained numerous specimens at 
Cambridge, and have found others in several collections. 
Agabus sexualis, Reiche. “ Peterhead, Aberdeen.” I am informed 
