LIBURNIA PELLUCIDA. 49 



This species appears to be abundant in some locali- 

 ties, but it is not common on the Haslemere Hills. 



In the February number of the ' Ent. Mo. Mag.' for 

 1888, p. 196, Mr. Edwards revises the species of L. 

 pellucida as previously described in his Synopsis of the 

 genus. He considers that the examples usually deemed 

 to be pellucida really contain three species, and that in 

 the males the differences show themselves in the more 

 or less cleft form of the penis and the colours of the 

 pronotum. I possess single specimens of L. dijficilis 

 and L. disereta, both named by Mr. Edwards, and I 

 have carefully examined the several pygofers from 

 behind, and noted their appendages. For comparison 

 I have drawn these insects on Plate XV., figs. 5 to 7, 

 which may give some idea of the differences which 

 help to separate them from pellucida in Mr. Edwards' 

 judgment. From these isolated specimens I do not feel 

 myself able to pronounce them to be other than varieties 

 oi pellucida. L. disereta is smaller and darker than L. 

 difficilis of Edwards, whilst the latter has a somewhat 

 rufous spot below the scutellum, as in L. pellucida, 

 I cannot see any sufficient differences in these and the 

 adjuncts of the pygofers to warrant the formation of 

 two new species. On the other hand, I have not had 

 an opportunity of seeing the cleft penis, as it was not 

 exserted from the pygofer in either of my insects. My 

 experience, however, does not equal that of Mr. 

 Edwards, who doubtless possesses a sufficient series for 

 comparison. 



I append a short diagnosis of the two examples I 

 possess, taken under a low objective power : — 



Var. difficilis, Plate XV., fig. 5. Smaller than var. 

 disereta, vertex not quite so projecting. Eyes grey. 

 Scutellum more than two-thirds the length of the 

 pronotum. Elytra equal to the length of the abdomen, 



