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 accomphsh their jom^ney in safety is shown by the enormous 

 swarms of them that frequently occur on the east coast of England, 

 and which can only be explained as the result of an immigration. 

 Large numbers of Malacosoma nen&tria, Charaeas (jramlnis, 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 it is only around the latter that 

 they are seen in such quantities ; this, hoAvever, Giitke considers to be 

 contradicted by the migrations of Hi/beniia de foliar kr' and H. anranti- 

 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. Giitke 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 ofi'spring 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 Hijbernia species, 

 in which the females are wingless, this is, of course, as we have already 

 shown, inevitable. 



Gatke records the occurrence, on June 23rd, 1880, of a specimen of 

 Papilio podaliriua (in 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 if it were a common sedentary moth, Giitke might have been somewhat deceived 

 with regard to its migration. 



@^OLEOPTERA. 



Notes on the Dinoderus substriatus of BRrrisn collections. — The 

 insect in our handbooks (and in our catalogues since 1866) under the 

 name of Di7ioderus stibstriatus, 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 figm-ed in Fowler (pi. 118, fig, 13) is Stephanopachys suhatriatu^, 

 Payk. 



