8 INTOXICATION OF HUMBLE-BEES ON CEKTAIN CAPITULATE FLOWERS. 



*LizoNiA EMPORiGONiA De Not, Oil the flower-heads of Pohjtrichum 

 commune. Found by Mr, Lloyd WilUams on material m the laboratory 

 of the Pharmaceutical Society. 



Okdocephalum Preussii Sacc. On decaying herbaceous stalks, 

 leaves, &c. Annan, Dumfriesshire, Aug. 1896, A. L. S. 



Cephalosporium AcREiioNiUM Corda. On stalks of UmhellifercB, 

 &c. Annan, Aug. 1896, A.L.S. 



Ehinotrichum repens Preuss. On a stump. Newport, Oct. 

 1896, Mr. Jenkin. 



BoTRYTis VULGARIS Fr. var. plebeja Fres. On sweet chestnuts. 

 London, Nov. 1896, A. L. S. 



Acrostalagmus cinnabarinus Corda. On leaves of CratcEijus 

 Oxi/acantha. Bowness, Cumberland, Aug. 1896, A. L. S. 



*A. albus Preuss. On stalks of Bryonia dioica from Cambridge, 

 Nov. 1896, A.L.S. 



Clonostachys Araucaria Corda. On stalks of Cratagus Oxy- 

 acantha. Bowness, Cumberland, Aug. 1896, A.L. S. 



GoNATOBOTRYS SIMPLEX Corda. On stalks of Bryonia dioica. 

 Cambridge, Nov. 1896, A. L. S. 



Cephalothecium candidum Bon. On herbaceous stalks. Annan, 

 Aug. 1896. The plant is tinged with rose-colour; the conidiophores 

 are frequently septate. A. L. S. 



MucRospoEiuM sphseocephalum Sacc. On a stump. Newport, 

 Oct. 1896, Mr. Jenkin. 



*Periconia pycnospora Fres. On dead herbaceous leaves. Annan, 

 Aug. 1896, A. L. S. 



AcREMONiELLA PALLIDA Cke. & Mass. On dead herbaceous stalks, 

 leaves, &c. Annan, Aug. 1896, A. L. S. 



Stachybotrys alternans Bon. On packmg-straw from Edin- 

 burgh. June, 1896. This plant subsequently covered the moist 

 blotting-paper with a plentiful black growth. A.L. S. 



INTOXICATION OF HUMBLE-BEES ON CERTAIN 

 CAPITULATE FLOWERS. 



By J. Lloyd Williams. 



On July 18th, 1889, I happened to be botanizing on the Great 

 Orme, Carnarvonshire. The day was very sunny and warm, and 

 large numbers of humble-bees were gathering honey among the 

 flowers of thistles, chicory, and particularly of Centaurea Scabiosa. 

 The latter was visited chiefly by neuter Bomhus lapidurius, and 

 I observed with surprise that many of the insects on alighting 

 became quite inert and helpless. On watching more closely, the 

 following facts were observed. The bee rapidly examined the florets 

 one by one, leaving them immediately if they had no honey, but 

 stoppiug some little time if honey was found. In the latter case it 



