264 THE ENTOMOLOGIST. 



5. Hair-tuft close to base of air-tube ; pecten teeth 



hair-like Th. annulata. 



Hair-tuft near or beyond middle of air-tube ; pecten 

 teeth not hair-like 6. 



6. Air-tube quite four times as long as broad ; hair- 



tuft well beyond middle A. cincreus. 



Air-tube less than four times as long as broad ; hair- 

 tuft near middle ...... 7. 



7. Pecten of air-tube with detached teeth outwardly 



0. vcxans (sylvestris). 

 Teeth of pecten evenly spaced .... 8. 



8. Hair-tuft in a line with the pecten ... 9. 

 Hair-tuft not in a line with the pecten . . 0. diver sus. 



9. Pecten with about 24 teeth, each with 4-6 serra- 



tions . 0. cantans. 



Pecten with about 18 teeth, each with 1-2 serra- 

 tions ...... 0. nemorosus and 0. dorsalis. 



The above table is mainly drawn up from specimens pre- 

 served in balsam by Mr. C. 0. Waterhouse, taken in the New 

 Forest and at Burnham Beeches. The larvae of 0. vexans have 

 not been found, as far as I am aware, in Europe, but as the 

 North American sylvestris is almost certainly the same, I have 

 made use of the characters given for it by Dyar and Knab. 



NOTES FEOM AN ESSEX LEPIDOPTERIST'S DIARY 

 FOR 1911. 



By Paymaster-in-Chief Gervase F. Mathew, R.N., F.E.S., &c. 



(Continued from p. 229.) 



August 23rd was fine and warm. A boy brought me a fine 

 large female Sphinx convolvidi which he bad found on a bush. 

 It was in a large wide-mouthed pickle bottle, had sustained 

 no injury, and looked as if it had only just emerged. The first 

 T. amataria of the brood mentioned on the 15th inst. appeared 

 on the 23rd. Eleven others were bred subsequently, and the 

 remaining larvae are hibernating. 



Of two rather large broods of larvae of Acidalia emutaria, 

 from ova laid by females taken early in July, only six larvae fed 

 up ; the first moth came out on the 24th, and the last not 

 until Sept. 26th. The other larvae are hibernating. I do not 

 think that this is an easy species to get through the winter, as I 

 have tried several times and have always failed ; some kind of 

 fungus attacks the larvae. Another L. favicolor was bred on 

 the 24th ; in all I bred twenty-eight, the last one as late as 

 Nov. 8th. 



