( vii ) 



right antenna, which was divided into two branches from the 

 fifth joint. 



Mr. Percy H. Grimshaw showed examples of llydrotxa 

 pilipes, Stein, <$ and $ , the latter sex being previously un- 

 known. The species was first recorded as British by the 

 exhibitor in July 1904, the first specimens having been taken 

 at Aberfoyle by Mr. A. E. J. Carter in July 1903. Since that 

 date it has also been discovered by Col. J. W. Yerbury at 

 Porthcawl. Mr. Grimshaw also exhibited several specimens 

 of llydrotxa tuberculata, Rond, not hitherto recorded as 

 British, captured by Mr. C. W. Dale and Dr. J. H. Wood in 

 various localities. 



Dr. F. A. Dixey exhibited some cocoons and perfect insects 

 of hybrid Satumias, and made the following observations : — 



" I ventured some time ago (see Proc. Ent. Soc. Lond., 1897, 

 pp. 1-liii) to draw attention to the experiments in hybridisa- 

 tion made by Dr. Standfuss, of Zurich, and to lay before the 

 Entomological Society a brief summary of his principal results. 

 In the year 1898 I published in 'Science Progress' a more 

 extended account of Standfuss's work in this direction, giving 

 particulars of several of the hybrid forms obtained by him, 

 and adding comments of my own on what appeared to be their 

 biological significance. This paper is included in vol. ii of 

 the 'Hope Reports' (1901), and portions of it may be found, 

 though (doubtless from inadvertence) without clue acknowledg- 

 ment, in the pages of an important work on Lepidoptera, now 

 in course of publication. An excellent translation, by Mr. 

 E. M. Dadd, of Dr. Standfuss's account of some later results 

 than those recorded in his ' Handbuch ' (Jena, 1896), was 

 also published in the 'Entomologist' for 1900 and 1901. It 

 is illustrated by four well-executed photographic plates. 



" Dr. Standfuss has been good enough at various times to 

 present me with some of his specimens ; these are now, with 

 two exceptions, in the Hope Collection at Oxford. 



"The examples I exhibit to-night consist of hybrids of two 

 kinds. The first is a pair, male and female, of the hybrid 

 between Saturnia pavonia, Linn., $ , and S. pyri, Schiff , $ (see 

 'Science Progress,' 1898, pp. 188, 189; pp. 4, 5 of the paper 

 as included in the 'Hope Reports,' vol. ii, 1901). I have 



