NOTE ON THE LIFE-HISTORY OF LOCHM&A SUTURALIS 29 



distinctly traceable. The body is still covered with bristly 

 tubercles, though these are not nearly so prominent as in the 

 larva. The legs are folded up close under the body, and the 

 antennae are beautifully curled under the two anterior pairs of 

 legs and brought out again so as to show the tip of each close 



o o o 



to the four anterior tarsi, the separate joints of the latter being 

 quite distinctly seen. The posterior legs are folded under 

 the wings, which are here in a rudimentary condition, though 

 plainly to be seen as in the figure. The developing mouth- 

 parts are seen just in front of the anterior tarsi. 



The mature beetle is shown in Fig. 3. It is of a yellowish- 

 brown colour, with black head, irregular blackish markings on 

 the thorax, and black scutellum. The antennae are about as 

 long as the body, and black with the exception of the three 

 basal joints, which are more or less testaceous. The first 

 joint is much thickened, the second very short, the third the 

 longest of all and rather slender, the rest somewhat cylindrical. 

 The legs have the tibire testaceous, the femora and tarsi 

 black. The head, thorax, and elytra are all finely punctured, 

 while the first-named bears prominent shining black frontal 

 tubercles. Fowler, in his " Coleoptera of the British Islands," 

 says the beetle is occasionally entirely black, while the suture 

 of the elytra is always dark. In all my specimens, however, 

 there is no darkening of the suture whatever, and the colour 

 corresponds well with the figure given by Fowler of L. caprece, 

 the only species with which it might be confounded. How- 

 ever, the prominent shining black tubercles on the front of 

 the head afford a ready discriminating character, besides the 

 fact that L. caprccz is found on willows, sallows, and birches, 

 and not on heather. Redtenbacher's description of the species 

 ("Fauna Austriaca," 3rd edition, 1874, Band ii. p. 488) cor- 

 responds much better with my specimens, for he says the 

 thorax and elytra are "braunlich graugelb, die Naht der letz- 

 teren dunkelbraun." Possibly my examples were killed 

 somewhat early, and if kept longer the suture might have 

 considerably darkened. 



