As I do not find that the slight differences between L . deniata 
and its congeners are sufficient to justify the division of them 
into 2 genera, as proposed by Dr. Leach, l shall include all 
the species in the genus Lomechusa. 
The following specific characters I have taken from Gyl- 
lenhal. It seems that these insects are generally found in ants’ 
nests ; it is not ascertained whether they feed upon the ants, 
which is very likely, and from the rarity of all the species in 
this country, there is little hope of our learning much of their 
ceconomy. 
1. L. dentata Grav . — Curt. Brit. Ent. pi. 410. — strumosus 
Payk. 
The only British specimen I have seen is in the British 
Museum. In Sweden it is found under stones in dry sandy 
places, in company with Formica rufa. 
2. L. paradoxa Grav . — Gyll. 2. 438. 2.-— Ahrens 5. f. 12. — 
acuminata Kirby. 
Fuscous-red, somewhat opaque, elytra and legs pale 
testaceous, antennae short, filiform, posterior angles of 
thorax and elytra slightly prominent, thorax smooth, 
with a fovea on each side. — Gyll. 
Taken in Taverham Park, Norfolk, by Mr. Wilkin; in 
sand-pits at Bexley, Kent, the end of May by Mr. Haliday, 
and at High Bickington, Devon, by Mr. Cocks. Under stones 
in company with a little black Ant, in the spring, in Sweden. 
2 a . L. emarginata Fab. — Grav. — Gyll. 2. 440. 3. — Oliv. 3. 
no. 42. tab. 2. f. 12. 
Fuscous-red, subopaque, thickly and finely punctured, 
elytra pale testaceous, antennae long and filiform, 
posterior angles of the thorax and elytra mucronate- 
spinose. — Gyll. 
Found in the same situations as the first. I have never seen 
a British specimen of this insect, yet I think it may be the 
male of L. paradoxa. 
3. L. strumosa Fab. — Grav. — Gyll. 2. 437. I. 
Fuscous-red, subopaque, elytra and legs testaceous, 
antennae long and subsetaceous, posterior angles of 
thorax and elytra slightly prominent. — Gyll. 
This also is in the British Museum. It is the largest of the 
species, and in Sweden is found everywhere under stones in 
arid situations in the spring, frequently in company with For- 
mica rufa. 
The Plant is Sedum dasyphyllum (Round-leaved Stonecrop)* 
