Hymenopterous Parasites af Coleoptera. 458 
4a. CHLAENIUS IMPUNCTIFRONS.* 
A new species of the Proctotrypid genus Prosacantha 
has been bred by Riley from this Carabid in North 
America and named by him (Bull. U. 8. Nat. Mus., 1893, 
p. 191) P. caraborwm. 
6a. GYRINUS.* 
A species of this genus is said by Ashmead (Canadian 
Entom., 1894, p. 25) to be preyed upon in Java by his 
Tryphonid, Gausocentrus gyrint. 
7. Gyrinus natator, Scop. 
Hellins supplementing (E. M. M., 1881, xvii, p. 88 
-Parfitt’s notes (/.c., p. 79) on Hemiteles gyrini, says that, 
besides H. gyrini, H. persector and Pezomachus ? viduus, a 
small species of Pteromalus emerged from the cocoons of 
G. natator at Exeter. 
10. Creophilus maaillosus, Linn. 
11. Ocypus olens, Miill. 
We were much gratified to discover, after the publica- 
tion of our note on the latter species, Mr. W. F. Frohawk’s 
account of undoubtedly the same host and parasite at 
Eltham in October 1883 (Entom., 1886, p. 225); in this 
case there were but nine parasites. Those we mentioned 
very certainly belong to the genus Proctotrypes, Latr. 
(= Codrus, Jur.) and not to Apanteles, as surmised; but 
the species is less positive, since those bred by Frohawk 
belonged to P. ater, Nees, while Kawall refers his to 
C. pallidipes, Jur., which also is not uncommon in Britain. 
It will be noted that Frohawk has no hesitation in calling 
the host-larva that of C. maxillosus, while we supposed 
it from purely circumstantial evidence to be that of 
0. olens. Curtis figures a similar parasitic pupa (Farm 
Insects, pl. G, fig. 47). Doubt might be cast upon the 
identity of the host of Proctotrypes calear, Hal. (¢f. Entom., 
1867, p. 342) had not the legs of Lithobius been expressly 
mentioned. Mr. Edward Step has given us four females 
of Proctotrypes pallidipes, Jur., which he bred in 1909 from 
a larva of C. mazillosus, found at Worcester Park, Surrey. 
