1912.] 147 



? . Palpi comparatively small, blackish with a tinge of yellow 

 and with slight yellow pubescence. 



Eyes distinctly though I'ather narrowly separated by the pale 

 grey or brownish yellow face. Legs with even the front coxae grey, 

 except at the tip, but more yellowish posteriorly ; all femora darkened 

 except about the tip, front femora simple and almost straight, with 

 only one (instead of three as in A. ferox) strong bristle beneath near 

 the base, or with one smaller one in addition, but with three rather 

 thin long postero-dorsal (one just before the middle, and the others 

 between that and the tip) ; front tibiae straight and simple, with one 

 moderately short spur, and one small slight dorsal bristle just before 

 the middle, and with slight postero-dorsal and ventral cihations on 

 the whole length ; posterior tibiae with slighter bristles, but the front 

 trochanters more bristly than in A. ferox. Squamae greyish yellow. 

 Length about 1.5 mm. 



This species is easily distinguished from A. ferox in the male by 

 its simple hypopygium, normal front tarsi, unarmed middle femora, 

 and simple front tibiae ; the female is also distinguished by the com- 

 paratively unarmed front femora, and liy the front tibiae having only 

 a short apical spur. 



A. mitis is very abundant on the sides of the River Deben, in 

 Suffolk, about halfway between Woodbridge and the mouth of the 

 river. It was taken on June 30th, 1907, and June 28tli, 1908, and it 

 also occured at Walton-on-Naze, on June 5th, 1908. 



60rt.. Callimyia elegans, Meig. This may now, in my opinion, 

 be definitely accepted as a British species. The male has orange 

 halteres, but may be distinguished from G. amoena by the abdomen 

 having a silvery-grey patch at each side of the hind margin of the 

 third and fourth segments, the patch on the fourth segment being the 

 more obvious one, while the thorax bears no praesutural grey spot 

 above the wing-base, C. amcena ( ^ ) has a large grey patch on the 

 sides of the fore margin of the second abdominal segment and similar 

 (but smaller) spots on the fore margins of the fourth and fifth seg- 

 ments, and also has an obvious praesutural grey spot above the 

 wing-base. I place infinitely more faith in the slight silvery-grey 

 markings of the male than I did in 1900. Col. Yerbury took four 

 males at Porthcawl. 



(To be continued). 



