1910] Girault and Sanders — Chalcidoid Parasites 109 
3. Stigmal vein with a large knob; abdomen ovate, pointed at apex, the 
second segment large, the third segment very short, the fourth and 
fifth rather large, sub-equal, the following very short. 
Pachycrepis Forster (type Caruna clavata Walk.) 
Stigmal vein with a small knob; abdomen ovate, the second and third 
segments large, the fourth and fifth very short, the sixth and seventh 
longer. 
Pachycrepoideus Ashmead, g. nov. (type P. dubius Ashm.) 
Any Abdomentabovyeriateor depressed, -eryac site ieteicrelote!o)-dete >) 215-1 iatsieveish siet-(sie< 5 
Ahonen, above conve xtys TOU CG trator n eferaieleyely <2 etoile: esrap=l Nel Sanus ols: 6 
5.” Ete, p. 329. 
Extracting, the genus was described thus, including both sexes: 
Pteromalids with the abdomen distinctly petiolate; fore wings with 
the marginal vein not especially long but thick and stout; cephalic 
aspect of head short and rounded, the occipital line incomplete; 
antenne inserted on or near the middle of the face, far above the 
clypeus; mesothoracic furrows distinct, complete; stigmal vein 
with a small knob; abdomen ovate, the second and third segments 
large, the fourth and fifth very short, the sixth and seventh longer. 
It is only through the kindness of Mr. J. C. Crawford of the 
United States National Museum, who compared our specimens with 
the single type specimen of the genus, that we were able to establish 
their identity. The existing codes of nomenclature do not clearly 
cover this case. As a matter of principle, we are greatly opposed to 
accepting genera belonging to this class, especially those of recent 
description, believing them to be obstructions; the species is a 
nomen nudum, for in this case it is obvious that the generic de- 
scription does not include the species or have reference to any 
specific characters; it cannot be, therefore, in any sense an indica- 
tion, definition, or description for the species. Hence, it is our 
opinion that all genera and species of this class are without status 
in nomenclature, the many opinions and the codes to the contrary 
notwithstanding. Accepting this fact, the genus Pachycrepoideus 
and its type species is subject to arbitrary treatment at the hands 
of the first systematist who happens to deal with it. We have 
nothing to do here with so-called credit or with courtesy, but solely 
with expediency and nomenclatorial science, which is impersonal. 
So we protest, not against this genus alone, but against all of the 
genera of its class, irrespective of authorship; as we protested 
