LIBURNIA STRAMINEA. 65 



L. mehmopachys is larger than L, vcnosa, which 

 in several respects it resembles. 



Lihimiia insignis was described by Scott from a single 

 example taken by Mr. G. Norman at Pitlochry, in 

 Scotland. (See Ent. Mo. Mag. for 1882, p. 271.) 



James Scott gave also a diagnosis of L. Bahi. It 

 was taken at Lulworth in August. (See also Ent. Mo. 

 Mag. vii. p. 72.) The female is unknown. 



As a key to the foregoing diagnoses of the genus 

 Lihurnia a selective list has been made, founded on 

 the most obvious aspects of the insects. Though this 

 sketch be incomplete, it may be found, in a general 

 manner, useful towards reducing any given species to 

 a group of perhaps four or five : the specimen then can 

 be discriminated by reference to the descriptions given 

 in the text. More than a dozen species remain which 

 are not contemplated in this list ; these must be 

 separated by a microscopic examination. 



Elytra. 



Spotted. — Liburnia adela, capnodes, collina, discolor, 

 limbata, lepida, straminea. 



Concolorous. — L. flaveola, farinosa, pallidula, scutel- 

 lata, smaragdula, unicolor. 



Banded. — L.lineola, longipennis, vittipennis, guttula, 

 striatella. 



White-edged. — L. collina, leptisoma, v. albomarginata, 

 Aubei. 



Black or brown. — L. discreta, forcipata, leptisoma, 

 pullula, pteridis, venosa, albomarginata. 



Vertex. 



Protuberant. — L. collina, fuscovittata, longipennis, 

 notula, unicolor, vittipennis. 



Even irith the eijes, or onlij slightly arched. — L. elcgantula 

 (fcm.), collina (fem.), Eieberi, Signoreti, pullula, 

 exigua, discreta, forcipata, striatella, obscurella, Doug- 

 las!, mesomelas, limbata (fem.), flavida. 



Square. — L. Scotti, notula. 



F 



