30 Mr. Ernest A. Elliott and Mr. Claude Morley on the 
100. Pogonocherus bidentatus, Thoms. 
From P. hispidus, Laich., Perris bred in France (ef. 
Ann. Soc. Fr. 1877, pp. 410-11) Odontomerus spinipes, 
Grav., Opius rubriceps, Ratz., and, doubtfully, 0. caudatus, 
Wesm. Nordlinger also bred, in Germany, one 9 of bracon 
undulatus,* from apparently this species, out of Huonymus 
(Ichn. d. Forst. 111, 35). 
101. Pogonocherus dentatus, Foure. 
Ratzeburg says (/. ¢. 1i, 212) that Cerambyx pilosus, Fab., 
is attacked by Zphialtes carbonarius (i. 119), and perhaps 
also by Pimpla terebrans, which he bred from fir billets 
probably containing this beetle (i, 114), and from some 
six-to-eight-year old dead firs containing a quantity of 
_Pogonocherus larvee (11, 89). 
102. Monochammus sutor, Linn. 
Bracon impostor is given by Ratzeburg (/. ¢. 111, 249) as 
parasitic upon Cerambyx sutor. 
103. Dorcadion pedestire, Poda.* 
The same author instances Cerambyx rufipes as the host 
of Xorides (Hehthrus) crassipes, which Jacobi bred at 
Nordhausen, in April, from this species, feeding in dry 
plum-tree branches (/. ¢. 11, 115 et 249). 
104. Saperda carcharias, Linn. 
Xorides (Mitroboris) cornutus,® Ratz., is the only known 
parasite of this species as instanced by its author, 
Taschenberg and Tosquinet. Kielmann took at Haasen- 
felde (Ichn. d. Forst. ii, 108) three 2 2 as they crept in 
and out of the holes bored by Cerambyx carcharias in 
aspen stems. 
105. Saperda populnea, Linn. 
This Longicorn is much subject to Hymenopterous 
parasites: Hphialtes continwus, twice bred by Brischke 
from swellings on aspen twigs caused by the larvee of this 
beetle (Ichn. d. Forst. iii, 25 et 109), #. manifestator and 
E, populneus, one f of which was bred by Lebe from 
poplar but uncertain host (ii, 100); Bracon multiarticulatus, 
Chelonus levigator + from the same swellings as #. 
continuus (iti, 25), Alysia Gedanensis, "° bred by both 
