( cxi ) 



It is associated also with the names of Charles Darwin and 

 Richard Owen, intimate friends of his father; so that his 

 brother-Entomologists might feel almost disposed to envy 

 liim the advantages to which he was born, and which also 

 he must have derived in his early days from contact with such 

 distinguished naturalists. But if those advantages are to be 

 lield accountable in any way for the great interest lie took in 

 Entomology and the work he has done in its service, this 

 Society may claim to iuive received some benefits from them. 

 He had been for forty-eight years a Fellow, and for two years 

 (1907-8) President of our Society, served at different times on 

 the Council, rarely missed attending our meetings, and the 

 mere titles of the papers which he contributed to our Trans- 

 actions help to fill more than one page in the Catalogue of 

 our Library. As he was personally familiar to most of you, 

 and you have had many opportunities of knowing how wide 

 and intimate was his knowledge in almost every branch of 

 Entomology, it will be easy for you to understand how highly 

 I appreciated him, and how grateful I feel, having been asso- 

 ciated with him so long, for the assistance he was always so 

 ready to give, especially in the days when, almost a novice in 

 Entomology, I began to work on beetles in the British Museum. 

 At that time, although I had a good knowledge of biology, the 

 result of two years' steady work under Prof. Huxley in his 

 laboratory at South Kensington, I knew comparatively little 

 about insects. One of the things, however, which I had 

 studied and thought 1 knew well was the structure and 

 homology of the mouth-parts of the cockroach. Quite re- 

 cently, I have been reading a paper, by Prof. E. Bugnion 

 upon this very subject, and it has reminded nie of a difficulty 

 I had at one time experienced in reconciling various statements 

 about the piece known as the sub-mentum. I had been taught 

 to regard this piece as part of the lower lip and homologous 

 with the cardines or basal segments of the first maxillae ; and 

 this is the view given of it in nearly all of the text-books ; but 

 the part which in Coleoptera is know2i by the same name is 

 merely a continuation of the gula and is so firmly fused with 

 the head capsule that it can only be regaixled as a sternal 

 part of the head. 1 went with this difficulty to Waterhouse, 



