1905.] 195 



7. O. pectinulafus Lw. : T caught several specimens of this species 



near Brandon in Suffolk on July 1 0th, 1877, but was not 

 aware at the time that it was an interesting capture, and 

 althoue:h I have since searched at what I believe was the 

 original locality, T have not been able to find it again ; 

 Col. Terbury however caught two males at Erodie on 

 July 12th. IQOi, so its distribution seems to be a wide one. 

 T should have considered it to be C. pumilio Zett., only 

 he says "femoribus posterioribus parce ciliatis." 



8. C. picticornis Zett. : T caught one male at Pitsea in Essex on 



June 7th, 1894. 



31. F.CTOMUS Mik. 

 E. alpinus Hal. : distinct from all species of Campsicnemus by its 

 silvery-white face, which practically disappears on its upper part just 

 below the antennae through the very close approximation of the eyes. 

 It is not uncommon in the New Forest and I have taken it at Eeigate 

 in Surrey, while Col. Ferbury caught it at Brodie. 



32. TEUCSOPHORUS Lw. 

 A very distinct genus of tiny flies, easily known in the male by 

 the long black costal space. 



1 (4) Hind tibiae bent before tip, apical part being dilated and hairy with 



a long curved subapieal spine beneath. 



2 (3) Hind tibiae with no long spine just before bending ... 



1. spinigerellus Zett. 



3 (2^ Hind tibiae with a long conspicuous spine just before bending... 



2. monacanthux Lw. 



4 (1) Hind tibiae not bent before tip, apical part not dilated and bearing no 



long curved subapieal spine. 



5 (6) Hind tibiae with a mamilla-like tuft of dark bristles behind about middle 



followed by some long thin bristles ; middle tibiae with two con- 

 spicuous bristles beneath 4. pectinifer Kow. 



6 (5) Hind tibiae with only an equal fine ciliation of about ten small bristles ; 



middle tibiae with no conspicuous bristles beneath... 4. simplex Mik. 



T. calcaratus Macq. is almost certain to occur in Britain, and is 

 allied to T. monacanthus and T. pectinifer, but the process about the 

 middle of the hind tibiae is spread out at its tip like a fan. 

 T. signatus Stseg. is not yet well recognised, as the most important 

 part of its description which is on page 309(5 of Zetterstedt's Dipt. 

 Scand., Vol. VIIT has been overlooked, being in Danish. It must be 

 very near T. monacanthus, but the long spine is apparently repre- 

 sented by two spines. 



