110 Psyche [June 
against Nasonia Ashmead in the first paper of this series. At the 
present day, the formation of genera in this manner is both obstruc- 
tive and inexcusable; it should be prevented. 
Recognizing expediency alone in this case, we are of the opinion 
that both the generic and the specific name should be retained on 
the basis of reconstruction and that in order to avoid confusion, the 

Fig.1. Antenna of Pachycrepoideus dubius Ashm., and right and left mandibles 
showing dentition. 
original author of the names should be cited. We therefore retain 
the name Pachycrepoideus dubius Ashmead with the single female 
specimen, upon which the genus was founded as type. 
Genus PacuyCrEPOIDEuUs ASHMEAD. 
Type: P. dubius Ashmead sp. nov. 
Female. Normal in size and aspect for the tribe; submetallic, reticulated. 
Head (cephalic aspect) circularly triangular, slightly wider than long; 
clypeus slightly wider than long, its apical margin slightly emarginate at 
the meson, the whole margin trisinuate; dorsal aspect, head wider than the 
thorax, the vertex broad and rounded, the occipital margin broadly concave 
but the vertex not noticeably narrowed at the meson, the ocelli in a flat 
triangle in the center of the vertex, distant from the margin of the eyes; 
latral aspect, gene rounded, as long as the rounded-ovate eyes, the genal 
sulcus absent. Antenne inserted about two thirds down the face, slightly 
ventrad of an imaginary line drawn between the ventral ends of the eyes, 
the flagellum clavate; antenne 13-jointed, with three ring-joints (see fig.) 
and a 3-jointed club, the pedicel long, distinctly longer than the moderately 
long first funicle joint (Fig. 1). 
Pronotum distinct, transverse, narrower than the mesothorax; parapsidal 
