1902.] 



59 



specimens at Kirtliiig near here, and in the ditch in Mr. Verrall's 

 paddock at Newmarket in the months of August and September. I 

 have named this species after the late A H. Haliday, as a tribute to 

 the memory of one who did a large amount of most useful work in 

 the family. 



L. Hal i day i belongs to a group in the genus which includes L. 

 fontinalis, roralis, fuscipennis, h/fosa, limosa, and geniculata, all of 

 which have more than four bristles on the seutellum, even if two are 

 only very small, and a peculiar long bristle on the middle trochanters 

 in front, pointing in the direction of the femur ; moreover, the last 

 four species also have the front pair of the dorsal row of bristles 

 and one humeral bristle strongly incurved ; zosterce, Hal., also pos- 

 sesses this last character, the first two pairs of the dorsal bristles 

 being incurved, but it has only four scutellar bristles. L. Holiday i 

 is most allied to L. lutosa, with which I have compared it. 



LlMOSINA MIRABTLIS, 11. sp., J 1 ? . 



A small dull brownish-black species, with a remarkable spine on 

 the under-side of the hind tibia? in both sexes. 



Eyes small ; antennae pointing out sideways, arista pubes- 

 cent ; inter-antcnnal keel fairly prominent ; frons often slightly 

 reddish in front. 



Thorax dull, clothed with brownish pubescence. Seutellum 

 with four bristles. 



Abdomen slightly more shining than the thorax, with the 

 second segment the longest ; in the male there is a small tuft of 

 hairs at each corner of the fifth segment at the tip, on the under- 

 side of the abdomen ; while at the end of the female abdomen 

 there are two yellow palpi-like processes, each of which has a 

 small black bristle at the tip above. 



Legs varying in colour from yellowish-brown to brown, but 



never black, and always with the tarsi paler; the hind tibiae bear 

 Fig. 5. I. rnirabilis. 

 (J. Left hind leg. a most extraordinary long curved spine beneath, starting at a 



little more than half way down, and extending be- 

 yond the tip of the tibia? (fig. 5) : second joint of 

 the hind tarsi slightly dilated, and very little longer/ 

 than the first joint. \ 



Wings (fig. 6) not clouded, with the nervure9 N.,, 



pale. Halteres with a pale stem but a darkened '"" •.■,> l ».,, 1 . r ,,.r,iif"' fl " 



knob Fig- 6. L.mirubilis. 6. Wing. 



Length, 1 — 1£ mm. 



This species was taken by Mr. Verrall on his stable window, here, 



"*%»•*, 



