1S6S.— We did not take a single specimen 

 during the spring or summer, but in the 

 autumn had a few pupa? given us, which 

 emerged from September 6th to September 

 25th. 



1 869.- -We again failed to take a spring or 

 summer specimen, but obtained in the autumn 

 larvae and pupae, which emerged from Sep- 

 tember 10th to October 12th. On the 30th 

 October we took a butterfly on the wing. 



1570. — Again failed to capture a spring or 

 summer butterfly, but in the autumn the 

 larva? and pupae were very numerous, and 

 began to come out September 4th, but being 

 ill and from home till December, I cannot 

 say how late they continued to emerge. 



1571. — Again this autumn, larvae and pupae 

 were abundant, although I have no note of 

 any imago being captured in spring or sum- 

 mer. I was from home till October 14th. 

 On the 15th S C album emerged, on the 16th 

 7, on the 19th 2, on the 23rd 1, and on 

 November 1st 5 ! ! 



1872. — Again in the spring and summer 

 no record of one being seen. In the autumn 

 they began to emerge September 23rd, and 

 continued coming out up to October 22nd. 



1873. — From home the whole of the year. 



1874. — No Spring imago obtained ; but one 

 larva was found on Gooseberry, which came 

 out an imago on July 2nd. In Autumn very 

 scarce. I have only 9 pupa: recorded, but I 

 may have given others away. 



1875. — No Spring imago obtained ; but two 

 larva 1 were found on netde, which produced 

 imagines on July 1st. Plentiful in Autumn, 

 they began to emerge September 16th. and 

 continued coming out till Nov. 12th, on which 

 day I reared one, also one on the 10th. 

 These are the latent records I have of their 

 emerging. 



1876. — Throughout this year we utterly 

 failed to obtained larvae, pupa, or imago. 1 

 wanted them much, and offered a higher 

 reward than usual. It seemed strange, follow- 

 ing a most abundant year. 



1877. — This Spring we took a female, and 



obtained a brood which emerged July 4th until 

 19. In the Autumn I again failed to get larva-, 

 pupa-, or imagines. 



I 87 s - — We sought much after a Spring 

 imago, but failed to capture one, although two 

 or three wereseen on the wing. In the Autumn 

 had larvae and pupae brought, which emerged 

 Sep. 17th until Oct. 20th. 



1879.— I have no record of either larva, 

 pupa, or imago being ever seen this year. I 

 certainly did not set one. 



1SS0.— Two females captured early in 

 Spring, and some fine insects reared. The 

 imagines began to appear June 29th, and 

 continued coming out until July 9th. 

 Both were taken ovapositing on nettle. 

 There was a short and poor hop gathering 

 and rather late. The gatherers reported 

 "empty cases" being common, and they got 

 me many that had not emerged. They came 

 out in confinement from Sep. iSthtoOct. 13th. 

 Many seen on the wing. 



I can go further back if you desire it, but 

 do not exactly know where to search for the 

 old note books of " setting." How bitterly I 

 regret I did not make full notes of when first 

 and last seen on the wing, and fifty other 

 particulars. 



NOTES ON COMMON 

 DIPTERA. 



By S. L. Moslev. 

 A great obstacle to the study of the Diptera 

 is the difficulty experienced in getting speci- 

 mens named, and without names the study 

 of any order is no easy task. Books on the 

 subject are scarce, expensive, and perhaps 

 printed in a foreign language, and however 

 willing he may be one does not like to trouble 

 another to name a multitude of the very 

 commonest species. If a few named types 

 can be obtained in each family or genus, then 

 the work is much easier, as the student will 

 at any rate be able to classify his insects, 

 even if he has to do so without names. 



