- 
ce 
and occasionally three were non-fluorescent. From the band 
of these females we pass to the shorter, broader, yellow band 
or patch of the aristolochiae-like females—nearly always non- 
fluorescent but shown by occasional fluorescent individuals 
to have been derived from the only fluorescent male pig- 
ment. For it should be added that the marginal yellow 
F.W. spots of the male never fluoresced. 
A DipreRon AND ITs ParasITE IN Ants’ Nests.—Mr. 
DoniIsTHORPE exhibited specimens of the Chalcid Spalangia 
erythromera Forster, together with its host Phyllomyza lasiae 
Collin, ms. (Diptera), and the ant Acanthomyops (Dendrolasius) 
fuliginosus Latr., in the nest of which these insects live. He 
pointed out that he had discovered the Spalangia first in 
Britain in a nest of the ant in question on May 6, 1906, at 
Wellington College, and had subsequently bred it in numbers 
in a bowl of refuse “ carton” larvae and ants from the same 
nest that year. As the Spalangia is shining black like its host 
ant, and as the ants did not treat the parasite in an unfriendly 
manner, he concluded it was parasitic on the ant larvae. 
He had subsequently taken the insect in fuliginosus nests 
at Darenth Wood, Weybridge, Oxshott, and Woking. On 
Dec. 10, 1920, he had bred a specimen from refuse from a 
fuliginosus nest at Woking which did not contain any ants, 
or ant larvae; consequently he isolated a number of Dipterous 
pupae from this refuse in a small box, and from a pupa of 
Phyllomyza lasiae a specimen of the Spalangia had emerged 
on Feb. 21, 1921, thus fixing the host. Other specimens had 
been bred on April 10 and Sept. 30, from Phyllomyza pupae. 
The exhibitor remarked that the larvae of Phyllomyza were 
not parasitic, but lived free in the nests of ants, and that he 
had reared several species from the larva to the perfect insect 
in his observation nests. 
A Fatry TALE. 
Dr. NEAVE read the following translation from the German 
of a skit on modern systems of Zoological nomenclature 
by Dr. A. Reuss, the original of which was published in 
Societas Entomologica for November 1921, p. 42 :— 
Once upon a time there was a land called Nomenclatoria. 
