Ortlictrnin. 129 



s^encral description illustratccl b}' a rude eny;ra\-ing. 

 The colour is wholl\- cinereous ; the eyes are prominent 

 and of a clear bright green ; the antennae are short, 

 thick, and pilose ; on both sides of the head beneath 

 the e\-es are hairs ; and the mouth is also pilose. The 

 abdomen is broad, tapering towards the point, which is 

 pilose, and is hair\' at the sides. .Sexeral blackish 

 trans\-erse lines ornament the head, and the abdomen 

 is distinctl}- marked along the sides with blackish spots. 

 There are also some spots in front, and two lines on 

 the tarsi. The mask is two-thirds the length of the 

 head." 



Date. 



In 1896 a specimen was taken in Siu-rey, on May 17, 

 while the latest record for the species appears to be in 

 Jul}' ; but information is not sufficient for any definite 

 statement to be made with regard to the limits of its 

 period of flight. 



Habits. 



Besides fretiuenting marshy spots, this species seems 

 to ha\-e a liking for brick-holes, gra\el-pits, and such 

 localities. From its great resemblance on the wing in 

 appearance and habits to Libcllnla t/cprcssa, it maw 

 ]Derha])s, be sometimes passed over for that insect. 



Distribution. 



McLachlan sa\-s* it is ])ossibl}- ccmfined to the 

 southern half of ICngland. but that it is often common 

 about brick-holes in the London district. The small 



*E. -\[. .\[.. p. 253, 1.S84. 



