138 



tetralunaria, male, X S. hilnnaria {illiinaria), female, bred in July, 

 191B, the brood giving a large preponderance of gynandromorphous 

 specimens ; a part of a brood of Flnnomo^ quercinaria showing 

 melanic and ochreous varieties from a 1911 typical female; and a 

 series of Agrotis cincrea of somewhat large size, from Surrey. 



Mr. Hy. J. Turner exhibited a series of Krcbia sti/nne, from 

 several continental localities, showing the great range of variation, 

 from the large examples with dark-ground and very rich red bands 

 and well developed ocellations on all four wings, from Mt. Canigou 

 and Eastern Pyrenees, to the form from Mnrren in which all the 

 wings are almost uniformly black with only slight traces of the 

 eye-spots. 



Mr. Sharp exhibited a series of Colias edttsa, 71 males and 45 

 females, bred in October, 1913, from ova obtained in August ; and 

 a series of eight ab. helice, 5 typical females and 31 typical 

 males, bred from ova laid by a captured ab. helice. 



Mr. Colthrup exhibited a series of ( '. edusa, taken at Eastbourne 

 in July and August, 1913, and at Margate in September, 1913, 

 including two ab. helice, and also a series of females taken at East- 

 bourne in 1912 for comparison ; the 1913 females being decidedly 

 smaller, as were also females taken in 1900 and 1902 for com- 

 parison. 



Mr. Walford Johnson exhibited a series of photographs from life, 

 illustrating his study of the early development of a typical fish. 

 The species was the Scotch salmon, Salnio salar. The magnifica- 

 tion was six diameters. Fig. 1, taken on February 22nd, 

 showed the ovum on the point of hatching, after incubation in 

 running water for a period probably of something like eight to ten 

 weeks. Fig. 2. The hatching in progress — the creature partly 

 out — the tail being first to escape as in all normal cases. In both 

 figs, the eye is visible through the egg-shell. Fig. 3. The creature 

 — known now as an " alevin " — quite free. The empty egg mem- 

 brane is also shown torn across. Figs. 3 and 4 show the embryo 

 fish with a thin, almost transparent, body, with blood vessels 

 showing plainly ; also the rudiments of all the future fins. Attached 

 to the under-surface of the body, immediately behind the bead, is 

 an umbilical or yolk sac crowded with oil globules — the nutriment 

 on which for some weeks the alevin subsists, as it has a mouth 

 fitted only for passing water over the gills. Most of the oil globules 

 are microscopic, but some few are exceedingly large and are orange 

 in colour. The whole creature is pinkish, because it lacks all colour, 

 save that due to these large globules and the blood vessels. The 



