25 



species, and had always found that the two species bred 

 true : he had also observed dififerences between the two larvai. 



Mr. C. G. Barrett said that his attention was first drawn 

 to the subject by Professor Zeller, who expressed a decided 

 opinion as to the identity of the two so-called species, and 

 forwarded at the same time German specimens which could 

 not be referred to one more than to the other. Similar 

 forms had been found in the hill districts of the middle and 

 north of England, where neither form was to be obtained 

 at the same dates as in the south. He further said that the 

 markings and shape of the wings in the two forms were 

 absolutely identical, the difference being rtierely one of 

 colour, and that the distinctions between the larvae as shown 

 in the drawings appeared to be simply that one form was 

 darker than the other. In his experience he had found the 

 form biimdularia to produce a second brood as frequently 

 as the other, and taking the numerous variations into con- 

 sideration he was convinced that the two formed but one 

 species. 



Mr. Carrington said it was well known that larvae varied 

 in certain localities ; an almost black form of the imago of 

 crepuscularia occurred in the North of England, in which the 

 ordinary markings were entirely obliterated. 



Mr. E. Joy exhibited a collection of marine and land 

 shells from Lake Timsah, Lower Egypt, collected by himself 

 in February last. 



Mr. Step said that among them were species of the 

 marine genera, Pinna, L., Cyprina, Lamarck., Venus, L., 

 and Donax, L. 



Mr. Tugwell exhibited some gold carp from Japan, allied 

 to the form generally kept in this country ; and he called 

 attention to the terminal fin, which was developed into a 

 curious fanlike shape, closely resembling the form of fan 

 carried by the Japanese and Chinese people : he stated that 

 these fish were bred with a great deal of care, so as to 

 develop this fin ; in some of the largest specimens it was 

 quite three inches across. Only six specimens survived the 

 voyage from Japan, out of several hundreds that were shipped 

 for England under the care of Mr. Wymer. 



Mr. Carrington said that the price for specimens of this 

 variety of the carp ranged from ten shillings to five pounds 

 in England, but in Paris he had seen them fetch as much as 

 150 francs. They were very easy to keep if given sufficient 

 space and kept fed ; they could stand a good deal of cold, 

 but it did not do to allow the water to chill down too quickly. 



