40 
the kind help of Col. Yerbury, led to very interesting results. 
All were superficially alike and all were females ; yet 2 genera 
and 4 species were represented in the set :— Syrphus euchromus, 
2; Platychirus manicatus, 4; P. scutatus,4; P. peltatus, 1. 
The superficial likeness seems to indicate that the wasp seeks 
its prey by sight; the fact that all are females suggests the 
possibility that this sex is specially selected because of the 
larger amount of nutriment which is thus supplied to the larvae 
by each individual fly. 
ADDITIONS TO THE COLLECTIONS IN 1903. 
Eighty-one Lepidoptera, including a few moths, from the 
Gambia district, were presented by Sir George Denton. They 
had been captured probably during July and August, 1903, by 
Commissioner Pryce. Locality makes them of great value. 
Eleven insects from the Forest of Fontainebleau (April 1903) 
were presented by the Professor. 
Two hundred and two insects of many Orders from Jamaica 
(1897-1903), of which no less than 182 have been catalogued 
as permanent accessions, were presented by C. B. Taylor, Esq., 
of Kingston, Jamaica, together with one Argynnid butterfly 
from Virginia, U.S.A., with injuries probably caused by the 
attack of an enemy. The data of time and locality are 
detailed, rendering the collection of especial value; inasmuch 
as the Jamaican specimens in the Department are very imper- 
fect in this respect. The Pzerinae include a splendid series of 
Kricogonia lyside, showing an extensive range of transitional 
variation ; the Papzloninac, an interesting example of the rare 
and beautiful P. Zomerus, showing injuries which Mr. Taylor 
considers are undoubtedly due to the attacks of a lizard. 
Among the Sphingidae are two very distinct species exhibiting 
superficial resemblance of a very remarkable kind, which 
requires further investigation. The collection also includes 
examples of Hymenopterous models and Dipterous mimics. 
The Department owes to the generous donor an accession of 
remarkable interest and value. 
