238 EXCHANGE. 



Moth is by no means a companion of any of the above-named, the montb 

 for its appearance in the winged state being September, and I have taken 

 them good to the end of October. In the year 184:6, I believe that 

 several Convolvulus Hawks were taken as early as the last week in August, 

 but this was noted as an exception, not the rule. In fact the summer 

 of 1846 was exceedingly hot, and consequently produced several of the 

 Insect tribe which were previously considered very rare or next to extinct, 

 for instance, Cehrio, Galii, and Livornica were taken in many parts of 

 England, and Atropos and Convolvuli were abundant throughout the whole 

 country. By the bye, the whereabouts these species hide for so many years, 

 and then spring up so abundantly, would, I presume, be an amusing subject 

 for inquiry, and doubtless would bring out some curious speculations. I 

 should certainly suggest that Mr. Edward be further questioned respecting 

 his statement, as truthful information must be insisted upon to secure the 

 worth of "The Naturalist."— Cornelius Walford, Witham, Essex, August, 

 1856. 



I cannot but express m}^ agreement with the above remarks, but the writer must himself 

 be mistaken as to Livor)iiea being taken in many places. — F. 0. Moiuus. 



Botamj. — William Sutherland, 18, Bon-Accord Terrace, Aberdeen, can 

 supply the plants of the north-east of Scotland, including the best alpine 

 ones in Flora. 



Will any of the Norfolk readers of "The Naturalist" be kind enough to 

 furnish me with small specimens of peat-earth for microscopical examination; 

 being engaged in the study of the Diatomacea, I am anxious to obtain 

 specimens of earths likely to contain them from different localities. I shall 

 be most happy, in return, to send infusorial earths from any of the fol- 

 lowing localities: — Frazensbrunnen and Gossa, in Bohemia; Obera, in 

 Luneberg, Germany; Thiergarten, Berlin; Bilin, in Bohemia; and Habichts- 

 wald, Cassel, Germany. Diatomaceous deposits from any locality would be 

 extremely acceptable, and would meet with the best return in my power. 

 — George Hodge, Seaham Harbour, August 21st., 1856. 



The Rev. F. 0. Morris has duplicates for exchange of CalUmorpha Hera, 

 from larvaa from Guernsey; Vanessa G-album, Phragmatohia faliginosa, 

 Euthemonia Russula, Abraxas ulmaria, Fidonia piniaria, Argyymis aglaia, 

 Arctia villica, Arge galathcea, Notodonta dictcea, Platypterix unguicula, 

 Syndhus alveolus, Melitoea Artemis, Melitoea Athalia, Stewpes pam'scus, 

 Steropes comma, Thanaos Tages, Polyommatus corydon, Aplecta nehulosa, 

 and Phlogophora meticulosa. He wants fine Dipthera Orion, Notodonta 

 trepida, Zeuzera oesculi, Erehia Cassiope, and Eremohia ochroleuca. 



