16 My. Ernest A. Elliott and Mr. Claude Morley on the 
linearis (111, 99) and the rare Lusandulum abbreviatum (iii, 
200) probably preyed upon the same host, emerging late in 
the season, the latter from fir billets. 2. lignarius 13 is 
indicated as a parasite of this species, with no query, by 
Kirchner (Cat. 112); but Marshall (@, 265) simply gives 
Clinocentrus lignarius as a “parasite supposé” and in- 
sufficiently described. 
33. Agrilus biguitatus, Fab. 
Ratzeburg says that his Hvochus compressiventris (Ichn. 
d. Forst. 11, 121, queried as a true parasite at ii, 212) was 
probably bred from Buprestis biguttata: “The present ? 
was in the thick bark of a strong oak, in which I was 
seeking for Buprestide.” It is associated with no query 
by Kirchner (Cat. 82). Spathius radzayanus is another 
doubtful parasite upon this beetle: Herr Radzay (Ichn. d. 
Forst. 11, 483) bred it from an oak in which Curculio de- 
pressirostris, Buprestis biguttata and several species of 
Clytus were all burrowing and to which they were doing 
considerable injury. 
34. Agrilus viridis, Linn. 
From this beetle, Kirchner (Cat. 114), says that Corystes 
aciculatus,°® Reinh., has been bred. Ten 2 2 and one f 
of Hulophus agrilorum *°° were bred by Ratzeburg (Ichn. 
d. Forst. 1, 169) in June from a beech knot, in which was 
Agrilus nocivus, Ratz.; and Reissig (/.¢. ii, 242) also bred 
Picromalus emulus from the same variety of A. viridis. 
35. Throscus dermestoides, Linn. 
The anomalous Pachylomma buccata is given by Ratze- 
burg (Jz). cit. 11, 53) as having been taken by Hartig flying 
round Throscus adstrictor, with the supposed intention of 
ovipositing therein. Marshall, however, who treats this 
parasite as an aberrant member of the Braconide, quotes 
(Bracon. d’Kurop. 11, 625) his own and Giraud’s observations 
upon the association of Pachylomma with ants; and adds : 
“apres les observations faites sur P. cremiert, constatant 
les rapports qui existent entre les Pachylomma et les 
fourmis, on est autorisé & rejecter tout opinion contraire.” 
36. Agriotes. 
There appears to have been no record of parasitism in 
the Elateridee since Kirby said (Introd. Ent. 7th Ed. 1859, 
