270 [December, 



to identify. The traces of strise on the elytra of C. aj^pp.ndiculatnm 

 are variable, and may be very slight indeed, but the much larger size 

 of this species will distinguish it from C. calcaratum, and the more 

 acuminate elytra from C denticulatum. In general appearance 

 C. appendicuJatnni somewhat resembles G. zehei, but the punctuation 

 is much finer, and the elytra are less rounded at the sides than in the 

 last-named insect. 



C. denticulatniu is an inconspicvious species which might be easily 

 passed over for C. hnnmeum, which it resembles in size and colour and 

 somewhat in shape. It is, however, broader and has the elytra more 

 roimded at the sides, the club of the antennae is wider and the punctu- 

 ation of the thorax much finer. 



C. calcaratum at first sight looks just like an immat^^re specimen 

 of one of the other species, but the dark club of the antennae at once 

 indicates that it is mature. The colour, very fine punctuation (it is 

 the most finely punctured of all the species) and small size will 

 distinguish it. 



I have on several occasions during the past summer visited the 

 small area referred to in Ent. Mo. Mag., vol. xlvi, p. 25, but only on 

 one of them saw Colons flying over it, when I took two C. brunnerim. 

 I have dug vip a good deal of this ground without finding Colons or 

 their larvse, and have also dug several inches deep into the ground at 

 Burghclere without results. T suspect that the larva will be found at 

 some distance from the surface, and I think it veiw probable that it 

 feeds on fungi and moulds on the roots of dead grass, &c. In the 

 Burghclere locality the whole ground among the grass is covered with 

 old mouldy beech leaves, and there is no doubt that truffles and other 

 underground fungi occur there, as Anisototna cinnamomea, A. anylica 

 and Homalota dilaticornis are not rare. 



I have noticed that Colons may genei'ally be taken by sweeping 

 the long coarse light-coloured grass laiown as " Melic " (Melica 

 uniflora, Retz.). This grass grows in tufts, and many dead blades 

 and roots may always be found among it. Mr. Champion mentions 

 the fact that he and Commander Walker have taken C. serripes from 

 grass tufts. There was none of this grass at the small area mentioned 

 above (although there is plenty close by where I have taken Colons 

 for many years in succession), but there must have been many dead 

 roots of the sainfoin which had been choked by the grass, &c. 



RracMeld, Berks : 



September 26th, 1910. 



