THE ENTOMOLOGIST. 197 



Entomological Notes, Captures, %c. 



Sirex Gigas, 8$c. — I have a specimen of Sirex Gigas, 

 taken in July, which answers to your description in the 

 'Entomologist' for September. On the 18th of September 

 I found a fine Sirex at rest on a large fir tree atBowdon. The 

 antennae, head, thorax and body, are entirely dark metallic- 

 blue ; no trace of yellow, except on the legs, which are dark 

 reddish yellow. It is altogether rather smaller and slenderer 

 than my first specimen, the terminal spine broader and flatter, 

 and the ovipositor much shorter. In form and structure they 

 are alike. Do the sexes differ ? If so, which is the male ? 

 If another species, I shall be glad to know something about 

 it. — John S. White ; Droylsden Lane, Droylsden, near Man- 

 Chester, September 19, 1870. 



[The Sirex is Juvencus, and, like the last specimen noticed, 

 is a female, a fact determined at once by the presence of the 

 ovipositor. — E. Newman.^ 



Cynips lignicola in Ireland. — The Devonshire oak-gall is 

 very abundant this year in the neighbourhood of Killarney, 

 but I did not observe it in any other county of Ireland. In 

 a few years it may perhaps occupy this island in the same 

 way as it has spread over England. — Francis Walker; 

 Wanstead, September 19, 1870. 



Aphis Brassicca, — Herewith I send you a few specimens 

 of an insect which is at present too abundant on the cabbage. 

 Can you tell me what they are, and what is the best remedy 

 for destroying them? — John M. Campbell ; 9, Carrick Street, 

 Glasgow i September 16, 1870. 



[The insect, although perhaps not strictly agreeing with 

 the genus Aphis as now restricted, is still called Aphis 

 Brassicae. Its marvellous power of reproduction and its 

 injurious effect on the cabbage are well known to the 

 market-gardeners around London. — E. Newman.^ 



Liparis dispar, — I am surprised to see a notice of the 

 occurrence of the larva of Liparis dispar (Entom. v. 172), as 

 I was previously under the impression that this species was 

 generally common, both in the caterpillar and perfect state. 

 1 have had about a hundred of the chrysalids this year. Is 

 not some other species intended ? — Jas. H. Rowntree ; York, 

 September 19, 1870. 



