114 
Psyche 
[August-October 
insects on the wing, as it has been observed at various other 
seasons, and for the same and other reasons such flights do not 
seem to be nuptial in character.” He offers the suggestion that 
“on a clear day with a slight, on-shore breeze the surface of the 
ocea,n reflects sunlight with a peculiar sparkling brilliancy which 
might conceivably attract insects already flying above the land 
in unusual numbers because of some favouring combination of 
atmospheric conditions.” 
The outstanding feature of the present case is the unex- 
pectedly strong representation of such cryptozoic woodland in- 
sects as the Aradids. That these bugs, in common with many 
social, semi-social or gregarious insects living in the same cryp- 
tozoic habitat, exhibit the phenomenon of a definite autumnal 
flight seems well ascertained in some species. Thus, with Aradus 
australis Erichs, in New Zealand, February appears to be a 
flying period during which these insects may be found in the 
most unlikely places, in houses, on windows in cities and often 
in large numbers in spiders’ webs. Indications of a similar habit 
occur in Ctenoneurus hochstetteri (Mayr), a New Zealand Mezirine 
which has been observed flying at midday in brilliant sunshine. 
Bueno found two species of Aradus and one of N euroctenus in 
ocean drift on 19th July. 
That there is a definite spring flight of North American 
Aradids has been shown by Parshley (1921, p. 4). I have taken 
at Blue Hills, Mass., Aradus quadrilineatus in the open on 13th. 
of May. This species is included in our present ocean-drift list, as 
is also Lygus pratensis (L.), of which Mr. George Salt saw exten- 
sive flights in the vicinity of Boston during the earlier part of 
May. The preponderance of Bibionid flies in the first drift re- 
corded in the present paper is obviously associated with the 
spring-flights so characteristic of these flies and so familiar to all 
who collect at that season. It seems therefore altogether probable 
that the occurrence in large numbers, of insects in general and of 
Heteroptera in particular in ocean-drift is related more often 
and more exclusively than Parshley believes, with definite spring 
and autumn flights. It is at least likely that Aradids form a 
considerable portion of such debris only during the spring and 
fall flights. 
