252 [April. 



AzELiA : the only species in this genus corresponded witli A. 

 Stcsgeri, Zett. 



Anthomyia : in this genus, as now restricted, I determined eiglit 

 species, one of whicli seemed identical with M. radicum, Lin., and 

 another with M. pluvialis, Lin. 



A large number of small flies in the collection could be referred 

 to the genus Choktophila : I made out as many as twenty -nine dis- 

 tinct species, several of which were similar to European forms, viz., G. 

 Jloccosa, Macq., A. angustifrons, Meig., A. gilva, Zett., A. vittigera, 

 Zett., and A. Jlavo-scutellata, Zett. 



The genus Lispa contained three species, one similar to L. tenta- 

 culata, De Greer, and another to L. uliginosa, Pall. 



Caricea : this genus contained but one species, which seems to 

 be very common in America, as there were numerous specimens of it in 

 the collection ; it was of considerable size, and the females bore a re- 

 mai'kable resemblance to those of M. impuncta, Fall., but the males 

 were very different, and quite characteristic of the genus. 



CcENOSiA : I made out sixteen species belonging to this genus, 

 many of which were very similar in their characters to European ones ; 

 but I could only identify one, which was apparently identical with A. 

 pygvKxa, Zett. 



In conclusion, I must express a hope that some American Dipterist 

 may take up and desci'ibe the species of this interesting family in- 

 habiting his own country, which bear, as I have endeavoured to show, 

 such a remarkable affinity to the same tribe of flies in Europe. 



Bradford : March, 1878. 



Natural History of Argynnis Paphia. — As it was from a single example only 

 tliat I made my observation of the early stages of this species in 1861-62, I was 

 very glad to receive from my friend, the Eev. J. Hellins, in August, 1876, eight eggs, 

 which, with about twice as many more, had been laid by a captured female ; and 

 which enabled me to verify and supplement my previous work in a very satisfactory 

 manner. Before giving the dates of each stage in the life-history of the examples, 

 which these eggs produced, I will remark that, as before, the hatching took place 

 about a fortnight after the eggs were laid, and not, as stated by Von Prittwitz (see 

 E. M. M., vi, p. 223), delayed till after hibernation. 



The eggs were laid July 30th and 31st, 1876 ; the larvse hatched August 13th 

 and 14th, and were placed on potted plants of Viola canina ; they soon crept under 

 the leaves, and I did not see them again till April 6th, 1877, when I detected one, 

 and subsequently four others, which had survived the perils of hibernation ; one of 

 these five I afterwards lost ; one, when full-grown, was preserved by Lord Walsing- 



