74 BRITISH CICAD.E. 



Mr. Edwards says, *' I have examined one undoubted 

 male from Dr. Capron's collection," which remark 

 shows that this insect is rarely taken in Great Britain. 



Fieber constructed the genus Achrotilr to receive 

 two insects which are closely allied to StiwDia, but 

 show, as one chief difference, the development of 

 numerous tubercles on the frons and the edges of the 

 carinae. Mr. J. 8cott admitted AcJirotilc into his list of 

 CicadinsB, and Dr. Puton also recognised AcJirotile 

 hivittata, A. alhosif/nata, and A. hmgicornis in his 

 Catalogue. Mr. Edwards, however, has shown that 

 the pupa of Lihnniia Fairnuiirci is also characterised 

 by tubercles on the frons, and he considers {vide 

 Synopsis, /. c, pt. i. p. 86) that this last-named insect 

 is identical with AchrotUc hin'ttatus of Boh. and of 

 Fieber, and of Puton's Catalogue. 



Through the kindness of Mr. P. B. Mason, of 

 Burton-on-Trent, I have had the opportunity of 

 examining two specimens of A. albosignata which ori- 

 ginally formed part of Scott's collection. One of these 

 is of a ferruginous-yellow colour, and has much the 

 appearance of a larval form. The elytra are not dis- 

 engaged from the wing-cases, and the pygofer is only 

 partly developed. " Quelques pustules blanchatres sur 

 les carenes du pronotum, une pustule <\ I'extremite de 

 la carene laterale du mesonotum," are present; and, 

 besides these, three rows of tubercles run down each 

 side of the abdomen. The other specimen, which is 

 in bad condition, nevertheless shows the four parallel 

 keels and the deep pit which receives the basal joint 

 of the antenna, and also the large pustules noted by 

 Fieber, whose figure well represents this insect. The 

 carinae, however, are less raised than in Scott's 

 example. 



In my Plate III., fig. 8, which represents an Issiis, 

 simi ar pustules occur, and the same reasons which 

 suggest that this represents the nymph of an Is>>us 

 lead me to the belief that Scott's insects are immature 

 forms also. 



