74 



[September, 



MACHORCHIS, Eond. 



M. MEDITATA, Fall. 

 I captured a female of this rare species in my garden in July, 1886 ; previously 

 I only knew the male. It closely resembles the female of C. tigrina in shape, size 

 and markings, but difPers by having a pubescent instead of a plumose arista, and by 

 the abdomen being without the longitudinal central marks on the dorsum between 

 the lateral spots, which are generally seen in C. tigrina. 



CtENOSIA, Meig. 



C. SCRUPULOSA, Zett. 

 pacific a ?, Meig. 

 This species, of which the female only has been described, differs from C. iri- 

 angula, Fall., by having the thorax marked only by one central longitudinal brown 

 stripe instead of by three broad confluent ones, and by having the eyes placed nearer 

 together. I captured two females at Buckingham, in August, 1884. 



C. picTiPENNis, Lw., et Schin. 

 Sapromtza costata ?, Meig. 

 Oechisia costata, Rond. 

 Mr. Dale sent me two specimens of this curious little species (the generic position 

 [751 °^ which is rather obscure) captured (I believe) in Dorsetshire. It is characterized 

 Sept., 188T. by the upper halves of the wings, with the exception of the tips, being nigrescent ; 

 the colour is very dark throughout the whole of the sub-marginal cells, and gradually 

 becomes paler as it extends downwards, terminating in the lower edge of each 

 discoidal cell. The lower portion of the wing and the tip are quite clear. The 

 thorax is ash-grey ; the abdomen of a yellowish or brownish-grey colour, sometimes 

 marked with an indistinct dorsal stripe, and with two small round spots on each of 

 the last two segments in the male, and upon all the segments in the female. The 

 antennae have the two basal joints yellow, and the third one black, with a sub-plumose 

 arista. 



C. GENICULATA, Fall. 



I admitted this species into my list in 1883, though I had not then seen a 

 British example. I captured one, however, in my garden near Bradford in June, 

 1886. It may be known from C. sexnotata, Meig., by the points of the hind femora 

 being black. 



CHIEOSIA, Eond. 



Qen. ch. — Eyes bare, remote in both sexes ; arista pubescent ; 

 abdomen of male narrow and elongated with small sub-anal appendages ; 

 alulets with small eqiial-sized scales ; wings having anal veins extended 

 to the margin. 



C. ALBiTAESis, Zett., Eond. 

 This pretty and peculiar little species, which Mr. Verrall has recorded as a 

 native of Scotland, has the thorax brown with grey shoulders ; the abdomen dark 

 brownish-grey, hairy, and marked with an indistinct, longitudinal, black interrupted 



