180 [August, 



3 . 5th dorsal segment armed on each side with a small obtuse tooth; 6th, 

 with a deep central fovea and eight spines, viz., four above (all about equally long, 

 but the outer pair much sharper than the inner) and four below (the basal pair very 

 small and ohtuse, the apical pair long and rather sharp) ; apes of 4th ventral 

 segment strongly impressed, widely etnarginated, and tubereulated on each side. 



Woking : June 22nd, L908. 



ECCOPTOMERA MICROPS, Mo., and AGROMYZA BICORNIS, Kalt., 

 TWO DIPTKRA NEW TO THE BRITISH LIST. 



BY J. R. MALLOCH. 



During the last two years Mr. A. H. Hamra has sent me for 

 identification a large number of specimens of Diptera from the 

 Oxford district, and amongst them were a few species that are rare. 

 I do not intend at present to record any but the above two species, 

 though I am certain that several more are additions to the British 

 List. 



Eccoptomera is a peculiar genus belonging to the Helomyzidce, 

 and which may be distinguished from all the other sub-genera in that 

 group, except QScothea, by the exceptionally small eyes, and from 

 (Ecolhea it may be distinguished by the mid-tibiae being bare, except 

 for the terminal spurs, and not having bristles as in that genus. This 

 species, microps, Mg., was first sent to me by Mr. Hamm early in 

 1907, with an accompanying note stating that it had been taken in 

 moles' nests, where it was not uncommon.* Upon examination 

 I decided it was microps, but requested Mr. Hamm to send it to 

 Mr. J. E. Collin for his opinion. Mr. Collin returned it as correct. 

 The species may be easily distinguished from lonrjiseta, Mg., which 

 I recorded in this Magazine (1907), by its dark thorax, the dark spots 

 at the apices of the hind femora, and the brownish 3rd joint of the 

 antennae. After receiving this species from Oxford I set myself to 

 find it in this district, Bonhill, Dumbartonshire, and was successful 

 in obtaining one specimen from a mole's nest in March, 1908. I also 

 obtained one pupa from a mole's nest and a ? specimen emerged 

 therefrom, so that evidently the larva feeds upon the offal, or refuse, 

 in the nest. No doubt a search in moles' nests would show that this 

 species is not rare, and probably longiseta is also to be found in 

 underground nests. 



The second species, Agromyza bicomis, Kalt., belongs to the 



Mr. J. Collins and 1 have found this species frequently in moles' nests at Oxford in February 

 and March, but rarely more than one or two in a nest. — J. J. W. 



