26 Rey. T. A. Marshall’s Monograph of 
3. Gyrocampa uliginosa, Hal. (PI. 1., fig. 5.) 
Dacnusa uliginosa, Hal., Hym. Brit., it., p.17, ¢ 2. 
G. uliginosa, Marsh., lib. cit., p. 502, 2 2. 
Labial palpi 3-jointed; stigma more elongate and attenuated, 
almost indistinguishable from the costa, emitting the radial nervure 
at one-third of its length, which third is longer than the 1st 
abscissa, 2 Black, shining ; head and thorax pubescent, and of 
equal width; palpi and mandibles rufous. Antenne somewhat 
longer than the body, 24-jointed, the 2nd joint testaceous. An 
impressed line on the mesonotum. terminating in a rounded fovea 
before the scutellum ; furrow of the mesopleure fine and smooth ; 
metathorax beset with whitish hairs. Wings hyaline ; squamule 
brown ; nervures and stigma ferruginous brown ; the portion of 
the stigma preceding the Ist abscissa being longer than this latter, 
it results that the parastigma is thrown back towards the base of 
the wing, and the Ist cubital areolet is angularly prolonged in the 
same direction ; radial areolet longer and narrower than in the 
other species; hind wings narrow. Legs rufous; tarsi, and tips 
of the femora, infuscated. Abdomen convex, spathulate, as wide 
as the thorax and a little longer, glabrous, very shining ; Ist seg- 
ment twice as wide at the extremity as at the base, striolate, finely 
margined, with scarcely visible tubercles ; 2nd sometimes faintly 
striolate at the extreme base. Terebra hardly exserted. ¢ 
similar ; antenne 28-jointed ; abdomen elongate-oval. depressed ; 
2nd segment rufcpiceous towards the base, Length, 1 line; exp., 
2+ lines, 
Found all over the British Islands, and in Holland ; 
common amongst aquatic plants. It constitutes the genus 
Ametria, Forster. 
VI. CHOREBUS, Hal. 
Hal., Hym. Brit., ii., p. 1, (1839). 
Maxillary palpi 6-jointed, the 4th joint longer than the 5th, the 
6th shorter, suboval ; labial palpi 3-jointed, the last joint enlarged, 
oval. Head transverse; eyes pilose; mandibles subcompressed, pris- 
matic, 3-denticulate, the middle tooth the longest. Thorax finely 
and densely punctulate, often not shining, rugose at the sides and 
beneath ; mesosternum smooth ; furrow of the mesopleure rugose; 
mesothoracic furrows incomplete, directed at first across the disk, 
but soon turning off at a right angle marked by a punctiform 
