6. STRATIOMYS 161 



more conspicuous on tlie tibiae ; tarsi ratlier more extensively orange, as the 

 posterior tarsi are all orange except on the last joint of the hind tarsi. 



Wings and halteres as in the male. Thoracal squamae and their pubescence 

 inore whitish. 



Length about 12-5 mm. 



This species varies a little in the extent of the white belly-bands and 

 considerably in the colour of the pubescence, but both sexes are dis- 

 tinguished from the other British species of the genus by the practical 

 absence of abdominal spots or markings except those caused by bands of 

 whitish pubescence, and by the dense pubescence on the thorax. The female 

 is the only British species which has hairy eyes, and is also distinguished 

 from S.furcata by the larger facial and smaller occipital orange spots; it 

 is known at once from S. chamwlcon and S. potamida by the absence of the 

 conspicuous yellow eye-collar. 



S. lo7i(jicornis is hardly common, but may occur in company with the 

 other species. I believe it is not uncommon in the Thames Valley as 

 Colonel Yerbury has taken it at Shoeburyness, Belvedere, Gravesend, etc., 

 but my only other localities are in Sussex (Lewes and Littlehampton), 

 Hampshire (Lymin^ton), Cambridgeshire (Wioken Fen), and Suffolk 

 (Felixstowe) ; Duncan recorded it as occurring in Scotland. It is apparently 

 an earlier species than the others, as my records extend from May 24 to 

 July 11 and are mainly in June. It is recorded from almost all Europe, 

 extending from Southern Sweden to Italy. 



Synonymy. — A female in the Hope Museum at Oxford was labelled " strigata." 

 The identity of «S'. strigata Fabr. with S. longicornis Scop, is now generally accepted, 

 but I have made some remarks upon that and upon the genus Hirtea in my 

 synonymical notes on the genus Stratiomys. 



