180 Rev. T. A. Marshall's monograi)h of 



4. Liophron edentatus, Hal. 



Ancylus edentatus, Hal., Ent. Mag., ii., 461, ? ; Lein- 

 'phron edentatus, Reinh., Berl. ent. Zeit., 1862, 

 p. 335, ? . 



5 . Black ; more robust than the preceding. Antennae 2G- 

 jointed, dull ferruginoiTS at the base beneath. Mandibles flavo- 

 rufous, fuscous at the tips; palpi paler. Wings dull hyaline, 

 stigma and nervures fuscous, radix stramineous, squamulae piceous ; 

 radial areolet very little widened at the base, attenuated at the 

 apex, making a distant approach to the semicordate form of 

 Sigalphtos. Legs flavo-rufous ; coxse black, unarmed ; tarsi fus- 

 cous, except at the base. Abdomen subdepressed : 1st segment 

 acieulated, stouter than in L. ater, Nees, attenuated at the base, 

 but its width across the large and prominent tubercles is nearly 

 equal to that of the apex ; belly flattened, its segments edentate. 

 Haliday. ^ similar ; anteunse not longer than the body, in my 

 specimen 25-jointed. Mesothoracie sutures shallow, posteriorly 

 effaced. Metathorax short, subrugulose, somewhat shining. Four 

 posterior femora with a fuscous line above ; hind tibiae somewhat 

 infuscated at the apex. Radial areolet as in the J . An inter- 

 mediate form, leading to Centistes. Length, 1\; wmgs, 3 lin. 



The ? seems not to have occurred since the time of 

 Haliday, who drew up his diagnosis from 2 old and bad 

 specimens ; he remarks that their depressed abdomen 

 might be the result of rough handling. The 3- I cap- 

 tured at Nunton, and refer it to this species with some 

 confidence, owing to the form of the radial areolet. 



ii. Centistes, Hal. 



Centistes, Hal., Ent. Mag., ii., 462 ; Reinh., Berl. ent. 

 Zeit., 1862, p. 336. 



Characters of Liophron, biit the mesothorax is quite smooth, 

 with no trace of sutui'es. Antennae having the same number of 

 joints in both sexes. Abdonaen obovate, convex in the $ , decurved 

 at the apex, and with the belly compressed ; subdepressed in the 

 3 ; 1st segment longer than broad, narrowed at the base ; tubercles 

 inconspicuous. Terebra short, subulate, pointing forwards. 



Only two species are known in Europe : — 



Legs flavo-rufous ; antennie 24-jointed, as lonp; as the 



body, or longer .. .. .. .. ..1. hicidator,'^ees. 



Legs brown ; antennn? 19-jointed, shorter than the 



body . . . . . . . . . . . . . . 2. funcijies, Nees. 



