1871.] 905 
It will thus be seen that the work, as far as it has hitherto gone, is of the 
greatest interest to the students of our entomological fauna; and containing, as it 
does, a great deal of original matter, it indicates a vast amount of research on the 
part of the author, and a thorough acquaintance with insects of various orders, 
very rare at the present time.—D. Suarp, Eccles, Thornhill, Dumfries, January, 1871. 
Alterations in nomenclature of Hydroporus ; §&c.—I propose to change the name 
of the Hydroporus described by me as H. parallelus (Ent. Mo. Mag., vi, p. 84), to 
H. longicornis ; the name parallelus having been already used once or twice in the 
genus Hydroporus. 
The Dytiscus melanocephalus of Marsham (Hydroporus melanocephalus of 
Stephens) not being the melanocephalus of Aubé and modern authors (vide Wat. 
Cat.), two changes in name are unfortunately necessitated: the synonymy below 
will explain them. 
1. H. melanocephalus, Marsh., Steph. 
pubescens, Gyll. 
2. H. scaphiformis, Mihi. 
melanocephalus, Gyll., Aubé, Thoms. 
In my remarks upon Trogophieus bilineatus in the last No. of this Magazine, I in- 
advertently wrote obesus, instead of obscurus, for the Stephensian species quoted 
by v. Harold.—Ip. 
Additions, §c., to the list of British Coleoptera.— 
PEDIACUS DEPRESSUS, Hbst.; Er., Ins. Deutschl., iii, p. 311. Of this most 
interesting and curious species, Mr. John Ray Hardy, of Hulme, Manchester, has 
taken eight examples, out of chinks of very rotten oak, in a yellowish, minute, 
dusky fungus, like mould; five near Knutsford Park, Cheshire, on 29th July, and 
the other three near Stretford, on the Cheshire side of the river Mersey, on 5th 
August last. It is immediately distinguishable from P, dermestoides by its lighter 
colour, more shining appearance, narrower shape, longer thorax (of which the 
lateral teeth are more pronounced, and the 4th or posterior denticle is situated 
considerably above, instead of actually at, the hinder angle), more evident and 
less close punctuation, more evident frontal depression, stouter legs, and longer 
antenn, of which the third joint is especially longer in proportion. 
I have also recently received Pediacus depressus from Mr. Wollaston, who found a 
few specimens of it (in company with Cryptophagus dentatus, Corticaria serrata, &e.) 
amongst stores of unquestionably British produce,on board Mr.Gray’s yacht last year, 
—one example having been found in Dartmouth harbour. It is curious to observe 
how readily the species of Cryptophagus, Lemophleus, Silvanus, and Pediacus make 
themselves at home in such widely different habitats as stores of food in houses, and 
the bark of forest trees. 
LZ MOPHLGUS PUSILLUS, Schin. Mr. J. Ray Hardy has during the past 
autumn taken this species out of filbert nuts, Sheffield Wood. It is, I believe, 
usually considered doubtful as a truly British insect,—-at all events as on the same 
level as Trogosita, Bruchus pectinicornis, &c. Its quadrate thorax and the very 
long antenne of its male readily distinguish it from its allies in this country. 
