The genus Lonchoptera is one of those groups which do not 

 seem to be immediately related to any other, although analo- 

 gies may be traced to many : for instance, it has the habit of 

 the Muscidae, the wings are not unlike those of Psychoda, 

 and the abdomen is furnished with appendages resembling the 

 Dolichopidae, to which it seems to be most nearly allied, being 

 not far removed, I think, from Opetia (pi. 489). 



I find that a nervure is continued round the wing, and the 

 submarginal nervure appears to run close to the costa, almost 

 from the base to the apex: the seta is placed a little above the 

 apex of the 3rd joint, and there is a remarkable difference in 

 the anal cells of the sexes, which I do not remember to have 

 seen in any other dipterous insects ; it is open in the male and 

 closed in the female. I have not been able to detect either 

 labrum or tongue, I have therefore described those organs 

 from Meigen ; I have, however, discovered the maxillae, which 

 seemed to have escaped his observation. 



The following are recorded as British species. I have 

 swept several of them off grass in marshes, and I occasionally 

 meet with them on windows near the Regent's Park. 



1. lutea. Panz. 108. 20 and 21.— furcata Fall. 



2. flavicauda Meig.—Curt. Brit. Ent. pi. 761 ? . 



I met with this species at Lulworth in August, and I found 

 several specimens in October on a Fungus near Heron-Court, 

 Hants. 



3. lacustris Meig. 4. 107. 3. 4. riparia Meig. 



5. rivalis Meig. — May, Dorsetshire. 



6. palustris Meig. I have frequently found amongst moss in 

 the spring, when I have been searching for Pselaphidae, 

 but whether this insect hybernates or breeds there I cannot 

 determine. 



7. Punctum Meig. 8. tristis Meig. pi. S6.f. 1 1. 



For Ciicuhalus baccifer, Berry-bearing Chickweed, I am in- 

 debted to Mr. G. Luxford, who informs me that this will be 

 the first figure from a mid specimen gathered in England. 

 Botanists owe the recent discovery of this curious plant to 

 Mr. Luxford, who met with it in the Isle of Dogs in June and 

 August 1837. For a further account I must refer to his 

 paper, which was published the following year in the Maga- 

 zine of Natural History. 



