32 Mr. Ernest A. Elliott and Mr. Claude Morley on the 
107. Tetrops preusta, Linn. 
From this small species, Ratzeburg (Ichn. d. Forst. 1, 
212) records Elachestes leucogramma, Pteromalus nodulosus, 
of which Brischke bred a single # (i, 197) and, doubtfully, 
Eurytuma Eccoptogastvi. Nordlinger also bred several 
specimens of Hurytoma ischioxanthus from ash and some 
others from a dry ash point, ringed by hornets, in which 
were Cerambyx preusta. Under the genus Acrocormus, 
Forst., Kirchner (Cat. 166) writes: “Dr. Forster entdeckte 
2 Arten aus diirren Appelzweigen, worin die Larven von 
Saperda preusta von einer Thamnophilus—uand Scolytus— 
Art lebten.” 
108. Oberea oculata, Linn. 
Taschenberg and Tosquinet both give Hphialtes carbo- 
narius, Christ., as preying upon this handsome species. 
They copy Ratzeburg, who says (Ichn. d. Forst. 1, 99): 
“ Among others, I bred a 54 lines long f with stramineous 
under-side of scape, rust-red clypeus, beautifully silky face 
and remarkably short legs out of Salix caprea, in which 
Saperda oculata had been boring.” The parasitism, how- 
ever, is not established, and the short legs render the 
identification doubtful. 
109. Tetropium luridum, Linn. 
This species is said to be much infested with Xorides 
ater ®° in Silesian spruce-fir trees, X. collaris, a $ of which 
were bred by Wissmann in the Hartz, Aspigonus contractus,* 
Bracon initiator)? B. obliteratus,” a few untypical 2 2 of 
Helcon xquator and both sexes in fir in the Hartz, and, 
doubtfully, Aesoleptus teredo, by Ratzeburg (lid. cit. 11, 39, 
67 et 212). Xylonomus caligatus* is also mstanced as 
parasitic upon it by Kirchner (Cat. 109) in Prussia. 
110. Tetropiwm castaneum, Linn. 
Morley writes (Ichn. Brit. 1, 21) of Cubocephalus nigri- 
ventris, Thoms.: “In July 1904, Donisthorpe gave me a 
female of this species, which he had ‘dug at Market 
Bosworth, Leicestershire, from a burrow of TZetropiuwm 
castaneum, in a spruce tree’; there was, however, no direct 
evidence of this species’ parasitism upon the Longicorn 
coleopteron (cf. EK. M. M. 1906, p. 41).” Mr. Pool has bred 
from TZetropium gabriel, at Enfield in 1906, a f Lissonota, 
