1913.] 63 



parts changes considerably in slightly different aspects, and with the 

 magnification used it was not possible for all the hairy covering in 

 H. decijnens to be in focus at the same time. In fig. 1 (H. decipiens) 

 and in fig. 2 {H. 4-notattis) the lacinia and apex of the left stipes are 

 shown in similar dorsal position. In order to see the lacinia of 

 H. deciiiiens clearly lieneath the dense hairs the armature was mounted 

 in balsam. 



/. Z. 



Both these species are widely distributed in England and perhaps 

 equally common. Mr. A. H. Hamm has, I think, found them ec^ually 

 common at Oxford, and they occur together in Devonshire and in 

 Norfolk and Suffolk. Mr. Hamm extracted the genital armature in 

 many Oxford specimens, and as might have been expected the distinctive 

 characters show no variation, and are quite the same as in my examples 

 from Dawlish. 



Park Hill House, Paignton : 

 January 28th, 1913. 



A71 introduced West African Longicorn, Cordylomera suturalis, Chevr. — 

 Mr. G. E. I'risby, of Grravesend, recently brought me for identification a 

 specimen of this handsome species, foimd by a cabinet-maker in a piece of 

 so-called mahogany on which he was working. Cordxjlomera suturalis is a 

 narrow, elongate, black insect, with the sviture of the elytra of a rich pui-ple 

 colour and the rest of their surface brilliant metallic green. Mr. Gahan 

 informs me that this is not the first time he has seen an introduced example 

 of this West African Longicorn, of which there is a good series in the British 

 Musemn.— G. C. Champion, Hors3ll, Woking: Fcbriiary 13t}i, 1913. 



Apterous or semi-apterous females of certain Lepidoptera. — Neither Mr. 

 Hudson nor Dr. Chapman, in their interesting papers on this subject (Ent. Mo. 

 Mag., November and December, 1912, and January, 1913) apjjear to have any 

 suspicion that the method of distribution of these insects is largely by con- 

 veyance of the females by the males when paired. But that siich is the case I 

 have for very many years had little doubt. When one finds isolated bushes in 

 the middle of a common, fifty or a hundred or more yards away from the nearest 

 tree in the bordering wood (I have several such spots iu my mind as I write). 



