111 
XV. Genus LYGCEONEMATUS Konow. 
Lygceonematus Kouow. Deutsche Eutoinologische Zeitschrift, 1890, n, p. 238. 
Body elongate-ovate; clypeus truncate at apex; pentagonal area more or lesu 
distinct ; claws Avith short, suhapical tooth ; last dorsal segment of the male carinate, 
carina subproduced at apex; sheath of female simple. — Konow. 
As already indicated under the preceding genus, the characters given 
in the descriptions of the genera Pachynematus and Lygceonematus by 
Konow are insufficient to satisfactorily separate the species. For this 
reason most of the American species have been referred to the first- 
named genus. I have, however, placed two species in the genus Lygce- 
onematus which seem most typical in the characters supposedly peculiar 
to it. One of them, the European L. erichsonii Hartig, is also so referred 
by Konow. Almost all of the third group of species referred to Pachy- 
nematus could with equal propriety be placed in Lygceonematus. If it 
should seem later advisable to separate the material now referred to 
Pachynematus it could be best done, at least so far as the American 
species are concerned, on the basis of the characters indicated in the 
table of species separating groups 2 and 3, rather than on characters 
proposed by Konow. The two species referred to Lygceonematus may 
be roughly separated, as follows : 
Abdomen black 1. Winnipeg Norton. 
Abdomen, with four basal segments, orange yellow 2. erichsonii Hartig. 
1. Lygaeonematus Winnipeg Norton. 
1867. Nematus Winnipeg Norton. Trans. Am. Ent. Soc, i, p. L98. (Cat., etc., p. 60.) 
Female. — Length 8 mm.; very robust; clypeus truncate; lateral 
ridges of ocellar basin low, indistinct, frontal crest wanting; fovea 
small, shallow (antenna 1 wanting); venation normal; stigma elongate, 
circular on lower margin ; sheath broad, rounded at apex ; cerci slender, 
tapering. Color black; head and thorax opaque: abdomen shining; 
clypeus in part, labrum, angles of pronotum, teguhe, apex of abdomen 
dorsally and ventrally, apices of coxa?, trochanters, and legs for the most 
part yellowish ferruginous; anterior femora brown on lower margin, 
posterior femora with the brown extending over the sides, especially 
apically; extreme apices of posterior tibia' and tarsi somewhat infus- 
cated; veins, including costa nearly to base and stigma, brown. 
One female, Oresson's type; a much-damaged specimen. Hudson 
Bay territory (Lake Winnipeg!). (Coll. Am. Ent. Soc.) 
The males referred to in the original description have been lost. 
2, Lygaeonematus erichsonii Hartig. 
1837.' Nematus erichsonii Hartig. Fain. Blatt. Holzwesp., p. 187. 
1880. Nematus noiahilis Cresson. Trans. Am. Ent. Soc, vili, p. 7. 
Later European references are omitted. 
