107 



men exhibited, an intensely blue one. During the summer I only 

 met with worn specimens. 



" 8. Aijriades thetis. In Mid Kent, where in early June I paid 

 a special visit, I caught one $ only, so went on to E. Kent where I 

 could easily have reached my limit of 50 specimens. I show the 

 best blue $ s that I took, also a ? ab. minor, which occurs some 

 years. Some of the females were large, and one 3 was deformed 

 on the left side. In September a $ was captured also deformed 

 on the left side, and generally the females were small and without 

 blue scaling. 



" 4. Alicia iiicdiin (astrarc/n'). The spring brood only. 



" 5. Ciqiido inininiiis. July, then worn. 



" 6. Plebeius idjon. In early August abundant at Oxshott. It 

 varied in size, one ab. minor 3 was taken. The undersides varied 

 from grey to brown. A blue ? and several ab. major were taken. 



" 7. Af/riades coridon. Tempted to Royston on August 12th, I 

 first saw Agriades coridon literally in hundreds, and I no longer 

 wonder that the specimens there vary so much. I wonder they 

 have not turned cannibals to get sustenance and destroyed them- 

 selves entirely, and I should not be surprised to find that deformity 

 follows overcrowding and that when the numbers decrease, ab. 

 roijstuneni^is will disappear. Near Tring on the 15th August after 

 tramping a mile on Downs that barely produced a specimen of A. 

 coridon, our small party discovered the metropolis, almost as 

 crowded as Royston and I was lucky after the heavy rain had ceased 

 to pick up a few blue examples and also some " deformities." One 

 5 taken was almost the form ab. fon-leri, and the undersides 

 showed much variation in depth of ground colour." 



NOVEMBER 23rd, 1916. 



Mr. Edwards exhibited several seeds of vegetable ivory, and con- 

 tributed the following note : — 



" The plant yielding the ' vegetable ivory ' of commerce is known 

 to botanists as P/njteh'idiaa wacrocarpa, a palm, a native of South 

 America, chiefly on the banks of the river Magdaiona, Columbia, 

 not only, however, on the lower coast region as in Darien, but also 

 at a considerable elevation above the sea. It is mostly found in 

 separate groves, not mixed with other trees or shrubs, and where 

 travellers tell us even herbs are rarely met with, ' the ground appear- 



