272 
7. An undetermined Mycetophilid (No. 20) also bred out 
in considerable numbers. This is the tiny fly that is so trouble- 
some, coming into houses to the lights, especially when one is 
reading in the evening. Their small size permits them to pass 
through ordinary mosquito screens. 
8. Lucilia sericata Meig.—I was surprised to have this 
carrion-fly breed out, even in small numbers, from the hen 
manure; for knowing the habits of this species I naturally 
assumed that the numerous individuals swarmed about the 
manure-tins only to feed. This common English blow-fly has 
gradually extended its range round the world. It probably got 
to Hawaii some time about 1900, the first specimens in collec- 
tions here being dated 1904, by Terry. 
9. Euxesta annonae Fabr.—This well known Ortalid bred 
out of the manure in limited numbers. Though I frequently saw 
the adults sitting about on the surface while the mass was fer- 
menting, I was not able to identify any of their young. The 
earliest Hawaiian record, that I have been able to locate, of 
this species, is in the Fauna Hawaiiensis, a female specimen 
taken in the Honolulu mountains, 1900. 
NATURAL ENEMIES OF DIPTERA FOUND IN THE MANURE. 
Predators were abundant all the time that the dipterous larvae 
were developing in the manure; on the other hand, parasites 
were little in evidence (due to their small size), yet they finally 
emerged in considerable numbers from the pupae of the flies. 
Two species of earwigs were common during the earlier 
stages, Euborellia annulipes (Luc.) and Spingolabis hawaiiensis 
(Borm.). A few of a third, a small species, Labia pilicorms 
(Motsch.), were also captured. 
The common  Hydrophilid, Dactylospermum abdominale 
(Fabr.), was active, and I also secured specimens of Crypto- 
pleurum minutum Fabr. and another small undetermined species. 
Four species of Staphylinids were abundant during the earlier 
part of the work, Philonthus longicornis Steph., which Mr. 
A. M. Lea of the South Australian Museum informs me is the 
correct name for our P. scybalarius, which is a synonym; Philon- 
thus discoideus Grav.; a species of Tachyporus; and a small 
Oxytelus sp. 
