88 Psyche [June 
On comparison of these loose leaves with the copy of Oliver in 
the Library of the Bureau of Entomology the Hentz illustrations 
prove to be very faithful copies, a little lighter in color as a rule, 
but with the added effort in some cases of indicating high lights on 
dark species, which improved their general appearance as com- 
pared with the copy of the printed work in Washington. In a few 
cases the colors are not completely worked in. 
In the copies of the descriptions useless words are omitted. For 
example, should the original read, ‘“‘Les antennes sont noires,”’ 
Mrs. Hentz would simply write “Antennes noires.”’ But no 
useful descriptive word is omitted. The enormous amount of 
copying that Harris, Fitch and other early entomologists had to do 
in the absence of funds for the purchase of rare works is a matter of 
frequent record. It is doubtful, however, if there exists a more 
perfect and useful manuscript than the one just described. It will 
be extremely useful, even today, since it brings together in compact 
form only the North American species described and figured by 
Olivier. It will be deposited either in the Library of the United 
States National Museum or in that of the Bureau of Entomology, 
where it may be consulted. 
THE NORTH AMERICAN SPECIES OF PACHYNEUR ON 
WITH THREE NEW SPECIES (CHALCID-FLIES). 
By A. A. Grravtt, 
Bureau of Entomology, Washington, D. C. 
Based on the types (except albutius). Females. 
I. Legs yellow except the coxee (compare anthomyia). 
Seapeblackish. (Is a Dibrachys.) 
nigrocyaneum Norton 
Scape yellow. As in anthomyie@ (of which it is a prob- 
able variant). Median carina of propodeum some- 
times single (the abdominal petiole not strongly 
striate). (=syrphi Ashmead) (=syrphicola Ash- 
MERA, Soy Me Pike OR eee ese Ey! albutius Walker 
II. Legs with at least the coxee and femora concolorous or the 
latter darkened. Spiracular sulcus narrow, distinct, no 
