158 PACHYPROTASIS S1MULANS. 



Tenthrbdopsis sordida (Vol. I, p. 118). 



This is T. dorsalis, Lep. (Mon., 87, No. 252), accord- 

 ing to Konow, and is not the sordida, Kl. The ? is 

 tolerably constant, except in the amount of black on 

 the abdomen. The <J is very variable ; the legs may 

 bear no black ; the mesopleurse are usually black, but 

 may have white markings ; the mesonotum is, in most 

 specimens, black, but may have a triangular white 

 mark on the middle lobe, as in the $ of T. Baddatzi. 

 The third abdominal segment is punctured, and the 

 quantity of black on the abdomen varies. 



It is not easy to distinguish the <? from that of 

 Baddatzi; but that usually maybe separated by the 

 larger size, reddish-yellow abdomen, by the greater 

 expansion of white on the breast and pleurae ; by the 

 sharp keel on the base of the abdomen, and by the 

 interstitial second recurrent nervure. 



T. sordida, KL, nee Thorns., Cam., has the body of 

 a lighter, whitish-yellow colour, and may be otherwise 

 known by the ventral surface of the abdomen having 

 on each side a black longitudinal line. I have never 

 seen a British example of it. 



Genus Pachyprotasis. 



P. SIMULANS (Vol. I, p. 123). 



Brischke (1. c, 97, pi. vi, fig. 12) describes and figures 

 the larva, and, as his description differs from that 

 given by Kaltenbach, I reproduce it. He found it on 

 Solidago virgaurea. In length 16 — 17 mm.; cylin- 

 drical, transversely wrinkled, except on the last seg- 

 ment. Body a bright bluish-green or bright green, 

 the wrinkles with a bluish-white powder, and the sides 

 have a stripe of a bluish-green colour. Head bright 

 brownish, somewhat shining, but mostly whitish 



