16 THE ENTOMOLOGIST’S RECORD. 
tion, and they adhere to it with as much steadiness and precision, as 
the different migratory hosts of birds which are observed here; and 
that they accomplish their journey in safety is shown by the enormous 
swarms of them that frequently occur on the east coast of Kngland, 
and which can only be explained as the result of an immigration. 
Large numbers of Malacosoma neustria, Characas yraminis, and other 
species, are also represented in somewhat similar migratory swarms. 
It has been suggested that these insects are attracted by the light 
of the lighthouse, and consequently that itis only around the latter that 
they are seen in such quantities ; this, however, Giitke considers to be 
contradicted by the migrations of Hybernia defoliaria* and H. auranti- 
aria, since large numbers of them may be found in the course of the 
night, as well as on the following morning, from one end of the island to 
the other. Gitke further points out that it is impossible that these moths 
should be guided by any sort of experience, acquired or inherited, during 
the single migration of their life, which, moreover, is performed in the 
darkness of night across a wide expanse of water, and even if they did 
these would be perfectly useless, for these migrants die shortly after 
their autumn migration, without having produced further offspring to 
which they could commit their experiences, either by hereditary trans- 
mission or personal instruction. 
So far as Giitke’s observations go, the flights of these insect migrants 
are composed exclusively of males. In the case of the Hyberiia species, 
in which the females are wingless, this is, of course, as we have already 
shown, inevitable. 
Gitke records the occurrence, on June 28rd, 1880, of a specimen of 
Papilio podalirius (mw company with Saxicola deserta, a southern bird 
extremely rare in central and northern Europe), a single specimen of 
this butterfly alone having been previously recorded for Heligoland. 
The weather at the time was perfectly calm and warm. He considers 
that the atmospheric conditions which favoured the migration of the 
bird had also induced the migration of the butterfly. 
* It must be remembered that this insect is very strongly attracted by light, 
and ifit were a common sedentary moth, Giitke might have been somewhat deceived 
with regard to its migration. 
GYOLEOPTERA. 
Nores on THE DinopERUS suBSTRIATUS OF BritisH coLLECTIONS.—The 
insect in our handbooks (and in our catalogues since 1866) under the 
name of Dinoderus substriatus, Payk., really includes three species 
which are, moreover, not all of the same genus. Canon Fowler (Col. 
Brit. Isles, vol. iv., p. 200) writes of Dinoderus substriatus,* Payk., 
‘“In decayed trees; very rare; Darenth Wood (where an example 
was taken on the wing by Mr. G. Lewis); New Forest (Stephens) ; 
Skellingthorpe, near Lincoln (Rev. H. Matthews). Of the insects 
here recorded, those from the New Forest (there are two specimens in 
the Stephensian cabinet) are the same species as a beetle taken by 
Professor Beare, in some numbers, in his house at Richmond; and 
the one from Darenth Wood (this is in the Power collection, labelled 
‘‘Darenth, Lewis’’) is another species of the same genus. The 
* The insect figured in Fowler (pl. 118, fig, 13) is Stephanopachys substriatus, 
Payk. : 
