280 [November, 



out sometliing of the mode of proceeding of Xylococcus Jiliferus. But 

 he was not successful ; at least, he is only able to say that it worked 

 " by a most peculiar kind of suction, and besides by a certain influence 

 which these insects exercise on the plant growth." There is here 

 nothing clear and definite, but I confess that I am unable to suggest 

 anything more satisfactory. I have already observed that we have no 

 knowledge of any acrid or acid fluid excreted by Coceids ; nor can I 

 see, in the species mentioned in this paper, any organs so different 

 from those of other species, that they can be looked on as instruments 

 for excavation. Professor Targioni-Tozzetti, in his admirable anatomical 

 essay (Studii sulle Cocciniglie, 1867) does not appear to mention any 

 organs likely to be so used ; I think, indeed, that he does not discuss 

 any of the burrowing species. My own studies of Coceids during the 

 last sixteen years have not given me an insight into this matter ; and 

 I venture to ask the question which stands at the head of this paper 

 in the hope that some entomologist may be kind enough to supply 

 an answer. 



Wellington, New Zealand : 



Ju»e letk, 1890. 



NOTES ON THE LEPIDOPTEEA OF DIGNE (BASSES ALPES). 

 BY A. H. JONES, F.E.S. 



In company wdth Mr. Frederick Lemann, of Plymouth, and Mr. 

 W. E. Nicholson, of Lewes, I spent three weeks in June at Digne. 

 AVe arrived at Avignon on June 3rd, and before leaving for Digne, 

 paid a visit to Nimes, on the way stopping a few hours at Pont-du- 

 Gard for the purpose of seeing the magnificent Eoman Aqueduct. 

 The road from the railway station to the Aqueduct, a distance of about 

 a mile and a half, passed through uncultivated ground covered with a 

 variety of Mediterranean plants, the Cisfus (both pink and white) 

 being very conspicuous. The French lavender {Lavandula spica) was 

 plentiful, and doubtless attracted the numerous butterflies which fre- 

 quented this lovely spot. Melanargia SyUhcs and Epinephele Pasiphae 

 were common ; Euchloe Bclia var. Ausonia, Lyccena Baton and melanops, 

 and Pellonia calahraria ; the scene being enlivened by occasional 

 specimens of Gonepteryx Gleopatra and EuchJoe euplienoides. We 

 were sorry to leave, we anticipated finding better if not quite as 

 good collecting ground at Nimes, but in this respect were somewhat 

 disappointed. 



After seeing the famous Amphitheatre at Nimes, we visited the 

 public gardens, noticing on the way evident traces of the larvae o£ 



