92 '^HE ENTOMOLOGIST. 



summer and spring forms overlap, occurring also in the 

 plain of Rousillon, at Amelie-les-Baius, and at Corsavy 

 from March onwards to September. Mr. Tetley reported 

 ; miegii at Le Vernet in June, 1907 ; Sprongerts,/ets</ia- 



? melii at Sorede, and Dr. T. A. Chapman miegii at the 



beginning of April at Amelie-lej^-Bains. 

 Both M. Oberthiir and Dr. Verity consider this to be a dis- 

 tinct species. The former states that he has never found the 

 two flying together, either in the Pyrenees-Orientales or in Spain 

 (Andalusia), and Mr. Powell confirms this observation for 

 Algeria, where typical podalirius does not occur at all. Mr. 

 Powell has bred the Algerian gen. eest. lotteri at Lambese, and 

 figures larva and pupa in situ on the food-plant (Lepid. Com- 

 par6e, fasc. vii, pi. 20), adding that all green pupse produced 

 lotteri. 



An exhaustive account of the Algerian I. feisthamelii is pub- 

 lished in fasc. x {loc. cit., pp. 21-33), and forms figured, 

 pi. cclxxvii, var. undecimlineatus ; pi. cclxxvii his, fig. 2258 his, 

 var. prirnulari^, Obthr., and ge?i. cest. lotteri, female, fig. 2258 ter. 



H. EowlandBkown. 



NOTES AND OBSEEVATIONS. 



Some Stephanid^. — Mr. Morley (antea, p. 35) mentions Cameron's 

 Stephanus rufo-ornatus, and, while correctly placing it in the sub- 

 genus Parastephmiellus, transforms the specific name into the 

 remarkable compound " riifidoniatus." On my protesting against 

 this, I was informed, first, that he objects to the juxtaposition of 

 two vowels, and always alters such names wherever met with. I 

 question whether anyone has a right to act in this arbitrary manner. 

 Secondly, that one such altered name had been quoted without 

 comment. This appears to me merely to emphasise the need of 

 watchfulness. Thirdly, as to the word : it is said to be formed on 

 the analogy of "Uvidus" ov some similar Latin word containing a 

 " d" in the last syllable. Will someone who has a better knowledge 

 of Latin than I can boast of kindly state whether the above com- 

 pound is permissible ".' In any case, I consider the original to be 

 preferable. — Ernest A. Elliott; 16, Belsize Grove, N.W., Feb- 

 ruary 27th, 1917. 



Insect Disappearances and Eeappearances. — Looking back 

 over a long life in which entomology has been my chief hobby, I am 

 unable to note " that there seems to bo a tendency in a great many 

 moths to appear in periodical cycles and then disappear again " 

 ('Entomologist,' December, 1916, p. 284). This, of course, is an 

 individual experience; and the "tendency " may be proved to exist 

 by overwhelming testimony from other observers, who will, it is 

 hoped, give the results of their observations. 



The subject is a very interesting one, so interesting that it tempts 

 me to add a little on insect disappearances and reappearances. 



.Th« sudden disappearance of Chrysoplianua dispar from 1815 to 



