73 



for a much longer time under water than smooth larvse, which 

 would the sooner succumb, as they would not be able to 

 entangle any quantity of air to sustain them during their 

 immersion. 



Dr. Chapman read a paper entitled " Some Points in the 

 Evolution of the Lepidopterous Antennas," illustrating his 

 remarks by black-board diagrams and the plates of antennas 

 sculpture by Dr. Karl Jordan in " Novitates Zoologica; " 

 (p. i). 



In the ensuing discussion Mr. Tutt said that this was one 

 of the most important of the long series of evolutionary 

 papers which Dr. Chapman had contributed to various 

 societies and magazines, and which would for many years to 

 come revolutionise our ideas of insects. 



FEBRUARY 23rd, 1899. 



Mr. A. Harrison, F.L.S., President, in the Chair. 



Rev. Francis Henry Wood, Brabourne Cottage, Bromley 

 Park, Kent, was elected a member. 



Mr. Sauze exhibited a hybernated specimen of the heterop- 

 teron Acanthosoma hcemorrhoidale, taken a few hours before in 

 Brixton. 



Mr. Harrison exhibited a long series of Pamassins apollo, 

 including captured and bred specimens. The large central 

 spot of the hind wings of both males and females showed 

 considerable variation in the amount of white in the middle. 

 There was also a female specimen of a Parnassius from Van- 

 couver Island. 



Mr. F. Clark exhibited specimens of the fresh-water 

 shrimp, Gammarus fluviatilis, one of the Sandhoppers. 



Mr. West, of Greenwich, exhibited long series of the four 

 species of the homopterous genus Philcenus. P. spumarius, 

 the common garden " spit-fly," a very long and extremely 

 varied series, showing all shades of yellow, brown, and black, 

 with and without markings ; P. campestris, also a varied 

 series ; P. exclamationis ; and P. lineatus. 



Mr. Moore exhibited a preserved specimen of the larva of 

 Papilio cresphontes of N. America. 



Mr. Step read a series of notes of the observations he had 

 made during the last few years on our larger British Crusta- 

 ceans, and he illustrated his remarks with lantern slides 

 made from photographs of most of the species obtained by 

 him on the Cornish coast. 



