222 THE entomologist's recoed. 



3rd Moult June 12th. 3rd Moult June 18th. 



4th Moult June 15th. 4th Moult June 21st. 



Larva fastened up ready to Larva fastened up ready to- 



pupate, June 22nd. pupate, June 23rd. 



Pupa, June 22nd. Pupa, June 28th. 



Perfect Insect, July 9th. Perfect Insect, July 11th. 



The newly hatched larvae are of a dark bluish-grey colour, and- 

 after the first moult yellow^ spots begin to show. After the fourth 

 moult they are dark blue with very distinct yellow spots. Before 

 pupating the colour changes to grey. The pupa is at first bright 

 yellow, which changes to a delicate pinkish yellow, with darker light 

 violet-grey marks, which later become black. When the perfect insect 

 has first emerged from the pupal skin, it is a very light yellow, the 

 thorax being a little darker, and the wings are extended. In about two 

 hours the wings are withdrawn beneath the elytra, and the insect 

 acquires the normal colour in about 24 hours. 



One other larva got as far as to fasten itself up ready to pupate, 

 but it never changed to a pupa. 



The larvfe are very voracious, and devour large quantities of 

 Aphidae, and I imagine the differences in the times spent between the 

 moults, etc., depends on the amount of food they were able to obtain, 

 and probably also on the weather. The egg measures 1-8 mm. in 

 length, and -omrjo. in the centre. It is of a bright yellow colour, and 

 narrowed towards each end, being slightly broader and more rounded 

 at the upper, than at the lower end. It is covered with a thin 

 membrane, Avhich forms a flat round disc at the lower end, where it is 

 fastened to the leaf on which it is laid. 



The full-grown larva measures from 10*5mm to 11mm. in length ; 

 and the pupa from 6mm. to 6-5mm. in length. 



Fowleris gives the length of the imago as 5-6mm. to 7"5mm. ; and 

 Ganglbauer^s, 5-5mm. to 8mm. The smallest specimen I have taken 

 measures 6'5mm., and the largest 8'5mm. in length. 



Rosenhauer^s^ in the paper before mentioned, states — " Truly 

 only one generation occurs." I believe this to be the case as a rule, 

 but this year, perhaps on account of the very hot weather in the early 

 summer, there appear to have been two generations. On August 26th, 

 1919, I was unable to find any imagines (this is the only time I 

 have ever been to Weybridge and not seen the perfect insect when I 

 have looked for it) ; but larv^, of all sizes, were abundant on the trees 

 over the nests. As we have seen eggs were laid in May which 

 produced beetles early in July. ■ The eggs from which these August 

 larvae hatched, must have been laid at the end of July* and the 

 beginning of August. 



{I'o be concluded.) 



12^1 OTES ON COLLECTING, Etc. 



Hylotkupes bajulus near Weybridge. — In August last, while 

 searching for Coleoptera in the neighbourhood of Weybridge, I was 

 fortunate enough to meet with Uijlotrupes bajiilns, L., again. My 

 first capture of this fine Longicorn in this vicinity was made in my 

 garden and duly recorded by me in the Ent. Mo. Mag. [52, 261 



