268 NATURE NOTES. 
the future larve. No males are seen at this time, they 
having all died at the approach of winter. About July and 
August the new generation appears; the males first, followed 
in a week or ten days by the females. During the autumu 
the females are found near their burrows, and the males on 
flowers. On a fine day in early September the male of 
cylindricus may be taken in great numbers. The genus 
Andrena is represented by four species :—albicans (Kirb.), 
rose (Pauz), var. trimmerana, clarkella (Kirb.), and nana 
(Kirb.). Of nana I have only taken two males. Several 
were seen on 4th June 1897 flying over a grassy bank, but 
having no net with me I was unable to catch more, and I 
have not seen the species since. Clarkella is not common; 
I have taken it in May. Albicans and rose, var. trimmer- 
ana, are both very abundant. In 1897 I took trimmerana 
on 22nd February, an exceptionally early record. Both 
Species burrow in sandy banks, forming large colonies. Six 
Bombi have occurred, viz.: Bombus agrorum (Schmied), 
hortorum (Linn.), pratorum (Linn.), lapidarius (Linn.), 
terrestris (Linn.), all commonly, and Jatreillellus (Kirb.) 
var. distinguendus, one female, ou 26th May 1897, busy at 
the flowers of Zamium albium. This fine bee is rare; it 
has been recorded, among other Scotch localities, from 
Dumfries, Perth, and Dunbar. 
Of the inguiline or parasitic bees I have taken three 
species :—Sphicodes subquadratus (Sm.), Nomada alternata 
(Kirb.), and Psithyrus quadricolor (Lep.). The habit of 
parasitism is very widespread in the Anthophila, there 
being quite a number of genera all the members of which 
lay their eggs in the nests of other bees. In most cases 
they resemble in appearance the industrious bees with 
which they associate, and in many instances differ from 
them in structure only by the absence of the pollen-collecting 
apparatus. If, as is probable, they are an offshoot from the 
industrious bees they affect, this similarity is just what one 
would expect. Nomada, however, is an exception. The 
species of this genus are all brightly-coloured insects, looking 
more like wasps than bees, and not at all like the sober- 
coloured Andrenas, etc., in whose company they are found. 
Still, in minute points of structure they show many resem- 
