82 



(j) Development of an additional minute apical eye on upper side 

 of forewing in rare instances. 



(k) Frequent asymmetry in number and in development of the 

 €ye-spots on the two sides. 



(Z) The partial non-development of pigment, i.e., existence of 

 irregular pale areas in some examples. 



(»i) Variation in depth of ground colour, especially noticed on the 

 under sides of races from different areas. (Carlisle, etc.) 



(n) Gyiiandromorphs. No example of this aberration has hitherto 

 been reported. 



(0) Dr. Chapman noted that by daylight the points of the eye- 

 spots on the forewings appeared yellow, while those on the hind- 

 wings were pure white. 



Some divergence of opinion occurred as to the habit of hyperanttis 

 to occur in colonies of somewhat restricted areas. Undoubtedly 

 small restricted colonies do occur, and the apparent divergence may 

 be explained, possibly by assuming that numerous colonies with 

 more or less closely approximating areas suggest a general destribu- 

 tion in some districts. 



Mr. Bright exhibited three very interesting aberrations of British 

 Lepidoptera. 



(1) Argynnis aylaia, in which the black markings were much 

 increased in area and coalesced into large blotches, some of which 

 were radiate. 



(2) Polyomniattis icarus, an underside form of unusually light 

 ground colour, giving an appearance like no other species of British 

 '' blue." 



(3) An example of male A/puule.'i coridon, in which the eye-spots 

 on the lower wing were margined with traces of the red scaling 

 which is usual in the female, a form known on the Continent as 

 ab. suavis. 



Mr. Edwards exhibited a grass snake which had been found at 

 Blackheath a few days before. 



Mr. Colthrup exhibited a large number of clutches of the eggs of 

 the house-sparrow, and pointed out in each case that there was 

 always one egg which differed considerably in marking from the 

 greater uniformity of the rest. The " odd " egg was usually lighter 

 than the rest. He contributed the following short paper : — 



The Odd Egg in a Clutch. — "In 1911 I had under observation 

 a number of nests of the House- Sparrow {Passer dontesticim) built in 

 the ventilators of a large building in the country. 



"I found that in every nest where there was an odd egg, it was 



