26 Mr. Ernest A. Elliott and Mr. Claude Morley on the 
est tres probable aussi que le Bracon truncorum, Gourean, 
élevé du méme Callidium, est identique avec le D. gallicus.” 
80. Callidium variabile, Linn. 
Of Xylonomus precatorius, Fab., Brischke writes (Schr. 
Nat. Ges. Danz. 1880, p. 128): “ Aus Callidium variabile 
erzogen.” Goureau gives his insufficiently described 
Spathius ferrugatus as preying upon the same beetle ; and 
Marshall says of Helcon carinator: “ Klevé par Ratzeburg 
dune larve du longicorne Callidiwm variabile, L., trouvée 
dans une ramuscule de chéne.” 
81. Callidium violaceum, Linn. 
From the larvee of various Cerambyces, but especially of 
this common species, Ratzeburg says (Ichn. d. Forst. 11, 68) 
that Wissmann bred both sexes of Helcon carinator, Nees, 
and also, probably, H. tardator, Nees; and adds (J. ¢. ii, 70) 
that he has bred Aspigonus contractus,>* with Helcon 
equator, out of spruce-wood infested by this Longicorn. 
Mr. Horace Donisthorpe possesses a 2 Hphialtes carbon- 
arius, which he took in the act of ovipositing in the 
burrows of C. violacewm at Lyndhurst, in 1902. 
82. Clytus. 
Herr Reissig bred Lxothecus levigatus™ from an un- 
specified larva of this genus (Ichn. Forst. iti, 43); eight 
of this parasite’s larvae were found to be externally sucking 
that of the Longicorn and they subsequently spun light 
cocoons. Radzay also bred Spathius Radzayanus (1. ¢. i, 
44) from oaks in which several species of Clytus, together 
with other beetles, had been boring. 
83. Clytus arcuatus, Linn. 
M. Perris has raised the very rare Pimplid, Avotes albi- 
cinctus, Grav., from this species (cf. Laboulbene, Ann. Soc. 
Fr. 1877, p. 406); and Ratzeburg gives (Ichn. d. Forst. 111, 
249) LHxothecus levigatus’ as parasitic upon Cerambyx 
arcuatus, (Of. also Agrilus biguttatus, ante. ] 
84. Molorchus umbellatarwm, Linn. 
The only parasite which has been indicated in connec- 
tion with this species is Hphialtes pusillus, Ratz. (Ichn. d. 
Forst. iii, 110), of which one specimen was bred by 
Nordlinger out of Jf wmbellatarwm in apple-wood. 
