44 



wings almost black, a fine, varied series of Abraxas sylvata 

 (ulmata), etc. 



Mr. A. W. Bacot exhibited (i) the hybrids obtained by 

 him between M alacosoma nenstria and M. castremis; (2) various 

 races of Lasiocampa quercus, with the results of crossings 

 between the races ; (3) a considerable portion of the progeny 

 obtained by pairing a <$ Amphidasys betulavia with a ? var. 

 doublcdayaria, illustrative of the fact that the insects of the 

 brood were of the two forms paired, with only one specimen 

 showing any decided tendency to be intermediate. 



Mr. F. R. Bellamy exhibited his black form, var. obscura (?) 

 of Anthrocera (Zygcena) trifolii, taken at Ringwood in June, 

 1899, Polyommatiis corydon, var. fowleri, taken at Swanage in 

 July, 1899, and a bred yellow aberration — ab. lutea of Calli- 

 morpha dominula. 



Mr. C. Boxer exhibited a small collection of South African 

 butterflies. 



Mr. W. Brooks exhibited a number of very large, varied, 

 and beautiful forms of Manduca (Acherontia) atropos, all bred 

 by him from Lincolnshire pupae. One specimen was the 

 extremely light form figured in Tutt's "British Lepidoptera," 

 vol. iv, p. 403, as ab. variegata, together with ab. virgata, 

 with light transverse lines, and ab. extensa, unusually black 

 suffused. He also showed examples of the air-bladders which 

 he was accustomed to find in the body of every imago. In 

 one specimen he had found two of these bladders — one in the 

 thorax and one in the abdomen. 



Mr. W. E. Butler exhibited (1) a number of examples of 

 the summer and autumn broods of Stauvopus fagi, including 

 a number of dark forms obtained from an August pairing ; 

 (2) a very beautiful series of Tiliacea (Xanthia) aurago, the 

 contrast between the yellow and red forms being most notice- 

 able, whilst one of the red forms seemed to possess almost a 

 purplish " bloom " ; (3) a remarkable form of Brcnthisselene, 

 with the markings on the under side considerably suppressed 

 and diminished, those which remained being extended and 

 united into radiations ; (4) a captured specimen of Pyrantels 

 atalanta, in which the usually red markings were transformed 

 to a dull yellow ; (5) some extremely beautiful forms of 

 Polyommatiis corydon, in which the marginal spots were large, 

 pure white, and without any trace of the usual black centre ; 

 (6) a series of Laclineis lanestris, which had been five and six 

 years in the pupal stage, among them being a form suffused 

 with a remarkable blue shade ; (7) a xanthic form of Epinc- 

 phile tithouus, and forms and aberrations of other species. 



