122 Annals Entomological Society of America [Vol. V, 
piceous, base ferruginous, first three flagellar joints with basal and 
apical yellow bands. Face ferruginous, shagreened, transverse. Malar 
lines indistinct at eye ends, more prominent towards the clypeus, about 
one-third as long as the face is wide between the lower angles of the 
eyes. Mandibles rather yellowish, palpi piceous-black. 
Mesothorax robust, rather short; with a well defined median sulcus, 
and a small obsolete scutellar tubercle. The surface is rather coarsely 
shagreened, and clothed with a moderately dense pubescence. The 
prevailing color is ferruginous, but there is a definite pre-scutellar 
piceous spot on the mesonotum, and the pleurze have two piceous 
patches on both sides. The ‘“metathorax’’ is very strongly gibbose; 
sub-conical, when viewed laterally; the carina is poorly defined. The 
surface is rather coarsely shagreened and clothed with a moderately 
dense pubescence. Anterior to the carina the ‘“‘metathorax”’ is ferrugi- 
nous, but on the posterior and lateral faces it is piceous. The legs are 
long, and piceous, for the greater part, but mottled with dusky yellow, 
which color is most prominent at the bases of the joints. 
Abdominal petiole ferruginous, rather closely shagreened, and pu- 
bescent. The spiracles are prominent. Remainder of abdomen ovate 
deep black, and densely pubescent. Ovipositor long, 1 mm. sheaths 
piceous. 
Observations. Described from a single specimen taken at 
Point Loma San Diego, California, by P. Leonard. Type 
in the collection of the Bussey Institution, Harvard University. 
This is a very remarkable species which is readily distin- 
guished by its abnormally convex “‘metathorax’’ and curiously 
mottled legs. 
Pezomachus coloradensis sp. nov. 
Female. Length4mm. Ovipositor .75mm. Very distinctly bicol- 
ored species as follows: Head black, entire thorax, legs, petiole and 
second and third abdominal segments light ferruginous; remainder of 
abdomen black. 
Face ferruginous below the insertion of the antenne, and slightly so 
above, along the eye-margins. Mandibles yellow at the base, apical 
half ferruginous, teeth black. Palpi yellow. Antennze dusky above, 
rather more yellowish below, rather long and slender with seventh 
flagellar and neighboring segments about 11% times as long as wide. 
Head from above shagreened, slightly pilose, transverse, over twice as 
broad as thick along the median line. 
Thoracic nodes sub-equal. Mesothorax with a poorly defined 
median furrow, most distinct just before the slightly raised scutellar 
area. The ‘‘metathoracic’’ carina which is broadly hastate in form is 
poorly defined except laterally. The legs, especially the hind ones, are 
rather more dusky than the thorax. 
The petiole is about three times as wide at the apex as it is at the 
base, but does not widen much after the rather prominent spiracles, it is 
