3. OXYCERA 91 



that traces of yellow spots occur not uncommonly at the hind corners of the 

 third and fourth segments, and that commonly in the female but rarely 

 in the male two small isolated yellowish spots occur out on the fourth 

 segment at some distance from the foremargin and still further from the 

 sidemargins, and that sometimes even the third segment may bear a 

 similar pair of spots. The only variation I have noticed lies in the 

 presence or absence (or obscure presence in the female) of a pair of yellow 

 spots right at the back of the vertex, and I have never seen these spots 

 conspicuous in a British specimen, though I have seen them quite yellow 

 in a specimen from Kowarz's collection and in that same specimen the base 

 of the annulated an tennal joint is orange. 



0. analis is very uncommon in England, and is one of those species 

 which have been found in only Dorset and Herefordshire ; it occurs 

 occasionally at Glanville's Wootton in Dorsetshire, where Curtis found 

 it from June 18 to July 1 "on small oaks in a copse"; Dr J. H. 

 Wood has taken it at Wall Hills near Ledbury in Herefordshire, and 

 Colonel Yerbury has taken it in that neighborhood, while Mr C. J. Wain- 

 wright caught three specimens at West Malvern in Herefordshire. 

 Dr Wood has informed me that he found it on a marshy bog on the sedgy 

 margins of old silting-up pools. My records range from June 1 to 

 July 17. Although Kertesz's Katalog gives "Europa" as its distribution 

 I can only find records from Middle Europe, and it does not seem to 

 occur far north or far south. 



Synonymji. — Walker'8 description is very bad, but can only refer to this species ; 

 one female in Bigot's collection was labelled 0. terminata ? 



2. O. pygmaea Fallen. Cubital vein not forked. Scutellum more or 

 less black about the base. Legs considerably blackish brown, but with 

 obvious yellowish parts. Small, weak species. 



A small species very much like 0. nigripes but paler and 

 weaker. 



$ . Face and frons forming a rather wide triangle and covered with almost silvery 

 white tomentnm, but with just the middle of the face inconspicuously barer 

 and blacker, and the frons with just the top angle and a narrow middle line 

 blackish ; the white tomentum extends round under the eyes and about half- 

 way up the back of the head against the eyes ; this lower half of the back of 

 the head is considerably puffed out and bears very short pale pubescence ; 

 upper part of the back of the head flush with the eyes and bearing only a 

 grey pubescence, but there is still a long whitish pubescence on the absolute 

 back of the head ; vertex black, rather long and pointed, extending down 

 almost half-way to the antenna? ; just above the ocelli there is a very short 

 pale pubescence ; proboscis orange. Eyes touching for about one-third the 

 distance between the occiput and the antennae, and bearing very inconspicuous 

 wide-scattered short hairs ; facets on the larger light brown upper part con- 

 spicuously and abruptly larger than those on the smaller dark brown lower 

 part. Antennae moderate in length for an Oxycera, didl l)lack ; style slightly 

 longer than the annulated joint. 



Thorax moderately shining black because it is so roughly and densely 

 punctate ; humeri with a small round yellow spot which is extended as a 

 yellow line along the top of the mesopleura?, and this yellow line widens when 

 near the wing-base ; these yellow markings are continued across the pteropleurce 

 and down the fi'onfc of the metapleurae, and also usually exist as a spot on the 

 top hind corner of tlie sternopleuraj ; postalar calli conspicuously orange, 



