476 REPORT UNITED STATES ENTOMOLOGICAL COMMISSION. 



(Fabr.), which he had at first regarded as varieties , but now considers as 

 a distinct species, the latter being more sedentary and reproducing in 

 Belgium year after year : " M. F. H. Koppen not speaking of cinerascens^ 

 it would be interesting to know whether he admits this species, and if 

 in the aflfirmative, whether all his remarks apply alone to the true 

 migratorius type, notably tbat which he says normally sojourns at 

 Eayonne, where I have taken only cinerascens, variety virescens, whose 

 characters are the same as in Belgium and Frankfort-on-the-Main. It 

 is also cinerascens that M. von Heyden has taken." 



Some notes on the Algerian locusts {Aerydium peregriniim^ migrato- 

 rium, &c.) by Coure, have been communicated to the Entomological 

 Society of France by Giraud. In them, mention is made of a special 

 work on the same subject, which the recorder has not yet seen (Bull. 

 Soc. Ent. Fr., 1867, pp. x, xiii). The locusts visiting Algeria come from 

 the south and arriv,e in May. They lay their eggs soon after their 

 arrival, and the young animals produced from these eggs usually become 

 adult in July. In August all usually disappear. Coure also notices the 

 arrival in Algeria in the early x^art of January, 1867, of a flight of 

 locusts. The color of these was stated to be reddish. It appears that 

 on first attaining their adult form these insects are of a rosy tint, and 

 afterward change ; and Coure thinks tbat it is not until after their 

 change of color that they are fitted for reproduction. Lallemant states 

 (Z. c, p. xiii) that the locusts, which live for a long time in the adult 

 state, are at first rosy, then emigrate southward, and return in winter 

 with their mature color. 



In Spain, during the summers of 1875 and 1876, Decticits albifrons 

 (Fabr.) was abundant and injurious, but less so in 1876 than the year 

 previous, as the soldiers assisted the inhabitants of the district in- 

 fested in destroying them. 



The secretary read a letter he had received from the. foreign office de- 

 partment, inclosing a dispatch from Her Majesty's minister at Madrid, 

 relative to the steps taken to check the ravages of the locust in Spain. 

 It appeared that considerable apprehension had been felt in many parts 

 of Spain that the crops of various kinds would suffer greatly this year 

 from the locust ; and the Cortez had already voted a large sum to ena- 

 ble the government to take measures to prevent this calamity and by a 

 circular addressed to the provincial governors by the minister of " Fo- 

 mento," published in the Official Gazette, they were directed to make use 

 of the military forces stationed within their respective districts, to aid 

 the rural population in this object. It was stated that thirteen prov- 

 inces were threatened with this plague. — [Proceedings of the Entomolog- 

 ical Society of London, 1876, pp. xiv and xv. May 3, 1876. 



A letter was read from T. V. Lister, esq., of the foreign office, trans- 

 mitting for the information of the Entomological Society a copy of a 

 dispatch from Sir John Walsham, Her Majesty's charge d'affaires at 

 Madrid, relative to the plague of losusts, together with a box containing 



