1918.] 23 



species of Vespn (not all, however, from Yorkshire), and specimens of stylo- 

 pised bees, and Mr. Musham brought some species captm-ed in his garden at 

 Selbv, including Andrena trimmei'cma Kirb., Prosopis communis Kirb., Halictus 

 smecithnianeUus Kirb., and cylhidricvs F., Crabro leitcostonnts L., Colletes 

 davisianus Sm,, Odi/nenis ^;/c?';<s Curt, (which showed a preference for Viola 

 blooms, creeping round to the back after alighting and there remaining 

 motionless), Anthophora pilipes F., and Megachile centuncularis L. 



In other Orders Dr. Corbett showed some Odonata from the neighbour- 

 hood of Doncaster — Libelhda 4k-macvlata L., and fulva Miill., Sympetrutn 

 scofiriun and striolatum Charp., Aeschna cyanea 1s\vl[\., juncea L.. and grandis L., 

 lirachyf.ron pratense Miill., Lestes sponsa IJaus., Ayrion pnella L., Pyrrhosoma 

 vyniphida Sulz., JEncdlagma cyatldgerum Charp., and Ischnura eleyans v. d. 

 ]ind. 



Mr, F. Booth exhibited the cockroach — Leucophaea surinamensis L. — 

 taken in a conservatory at Manningham, Bradford. 



At the evening meeting Mr. W. Denison Boebuck, M.Sc, F.L.S., F.E.S., 

 read a paper ' On the Lincolnshire Distribution of the Large Copper Butterfly, 

 and the President, Mr, W. P. Winter, made some 'Remarks on the Spinning 

 of Spiders,' illustrated with specimens and lantern-slides. 



The attendance at both meetings was good, all quarters of the county 

 being represented by members present. — W. J. Fordham. 



SOME FURTHER NOTES ON THE COLEOPTERA OF CROWTHORNE 



(A PARISH OF BERKSHIRE). 



BT W. E. SlIAEP, F.E.S. 



As I have already ventured to publish in these j^ages * a few obser- 

 vations relative to the occurrence of Coleoptera in this district during the 

 years 191^-1915, it ma}^ not be out of place if I supplement these by such 

 further notes as I have been able to make during the two seasons which 

 have since elapsed. The point of such observations lies principally in the 

 differential frequency of appearance which they reveal — indeed, perhaps 

 nothing is more obvious or more interesting to the student of field 

 Entomology than tlie annual or periodic ebb and flow of particular 

 specific life. 



Excluding such specially dramatic phenomena as the unexpected and 

 quite irregular irruptions of migrant swarms of certain species of Lepi- 

 doptera, Ave find even among the more static Coleoptera an abundance or 

 a scarcity, a novel manifestation or a total disappearance, during different 

 or even successive years, which no rules seem to govern nor environ- 

 mental conditions regulate. 



Doubtless, however, these phenomena are strictly dependent on 

 causes which are quite within the sphere of our understanding and 



* Ent. Mo. Jlag. 1916, pp. 86-89, 131-13-t. 



