1871.) 135 
Occurrence in Britain of Atomaria atra, Hbst.—I have long endeavoured to de- 
tect this species among the numerous members of its genus that have from time to 
time come under my observation; but always in vain, until very recently, when I 
found a single example of it among some enigmas sent to me by Mr. Wollaston, by 
whose sister-in-law, Miss H. Shepherd, it was swept up in a low, damp copse, 
alongside the Medway, about half-a-mile from the Powder Mills, near the village 
‘of Leigh, during the past summer. Mr. Wollaston has also long, and until now 
ineffectually, been on the “ qui vive” for this insect, which is the more interesting, 
since it is figured by Sturm as the type of the genus. A. atra is apparently most 
closely allied to A. fuscata, to dark examples of which it bears considerable resem- 
blance. Its type form, however, is deep black in colour, and it has a longer, more 
convex and more laterally rounded thorax, and wider and stronger punctuation on 
the elytra, which are more acuminate behind in outline.—H. C. Ryn, 10, Lower 
Park Field, Putney, 8.W., October, 1871. 
Occurrence in Britain of Throscus carinifrons, Bonv.—Mr. Wollaston has also 
recently sent to me for determination a Throscus, which must be referred without 
doubt to Bonvouloir’s species above named (Hss. mon. sur la famille des Throscides, 
p- 20). Two examples (one, now, thanks to Mr. Wollaston’s generosity, in my own 
cabinet) were taken by that gentleman during the hot weather of August last, 
crawling rapidly over a wooden fence in a garden at Dry Hill, Tonbridge; and, 
although constantly looked for, no others were found. These two examples are ap- 
parently g and @, the male being the smaller, with flatter and laterally more si- 
nuous thorax, and stouter antennal club ;—sexual differences also to be observed in 
T. dermestoides, which it superficially most resembles, being very nearly of the same 
size as small specimens of that insect ; but the two frontal keels of its head are 
more distinct and extend backwards to the pro-thorax; its eyes are divided con- 
| siderably beyond the middle by a narrow, horny plate, its thorax is flatter, and (in 
the g¢, at least, and as figured by de Bonyouloir) very evidently and suddenly 
sinuously contracted towards the front from the lower third; the strizw of its 
elytra are more delicately impressed, and the interstitial punctures rather clearer, 
as the surface is not so coarsely granulated; the elytra themselves are more 
acuminate behind, and the tibiz are not so stout. Its larger size, the more evident 
contraction of the sides of its thorax towards the front, the much less thick punctua- 
tion of the interstices of its elytra, &c., at once separate it from T. elateroides.—Ib. 
Capture of Trichonyx sulcicollis, Reichenb., at York.—I have recently taken a 
single example of this gigantic Pselaphid, crawling on my door-step. Further 
search has failed to discover any more specimens. The occurrence of this fine 
species so far north in Britain can scarcely fail to be of interest.—H. Hutcuinson, 
21, St. Anne’s Street, Cemetery Rood, York, October, 1871. 
Note on the question of hybrids in Coleoptera.—During the past summer I 
noticed Crepidodera ferruginea in copula with C. rufipes, at Llangollen. I have 
also observed the first of those species in copuld with C. transversa, on Chat Moss. 
—T. Mortzy, 57, John Street, Pendleton, Manchester, September, 1871. 
