118 Annals Entomological Society of America [Volk ¥: 
abdomen, and the free margins of the second segment meet on the ventral 
side of the abdomen. Ovipositor about as long as the third segment, 
sheaths stout, testaceous and densely pilose. Legs very stout but 
rather long. The swollen femora and tibiz are piceous black and 
are densely pubescent. The tarsi, which are quite normal in structure 
are of a more rufo-testaceous color. Ungues simple. 
Described from a single specimen taken at New Haven, 
Conn., by A. B. Champlain on the 20th of May, 1911. 
I am rather doubtful as to the genus in which this species 
should be placed as in Forsters description of Thaumatotypus he 
has “Scutellum distinct’. In this species, however, the 
scutellum is not indicated. 
As the generic description was drawn up on a single species 
and the present specimen agrees with it in all other particulars, 
notably in the much enlarged second abdominal segment, I 
have placed it provisionally here. 
Schmeideknecht places the genus in the Pezomachini and 
it is probable that he has seen the type so it may be that Forsters 
original description was not correct in this detail. 
Pezomachus utahensis sp. nov. 
Female. Length 4mm. Head thorax and abdomen shining black. 
Antenne and legs piceous. Metathorax strongly gibbous, without a 
carina. Petiolar spiracles rather prominent. 
Head, from above about twice as wide as thick along the median 
line, minutely punctulate, shining. Ocellar triangle small. Lateral 
ocelli nearer to the median ocellus than to the eye margins. Face 
entirely black, obtusely carinate medially from the insertion of the 
antenne to the base of the clypeus. Clypeus transverse, malar line 
obsolete, about half as long as the face is wide. Inner eye margins 
parallel and straight. Mandibles and palpi piceous. Antennz piceous 
above, lighter below, slender. 
horax uniformly and closely punctulate, shining. Prothorax 
rather large, closely connate with mesothorax, suture obsolete; testa- 
ceous on median line. Mesothorax rather larger than metathorax, 
scutellum indicated by a rounded though rather large and prominent 
tubercle. Tegular tubercles prominent and testaceous. ‘‘ Metathorax”’ 
strongly gibbous, posterior face abruptly declivous. Coxe _ black, 
remainder of legs piceous. 
Petiole rather short and broad, evenly widened from the base to the 
apex except for where the rather prominent spiracles cause a small 
tubercle. Closely punctured, and with an obsolete median furrow. 
Remainder of abdomen oval, about 21% times as wide as the thorax. 
Segments closely and evenly punctured, and with a sparse pubescence. 
Ovipositor about as long as the petiole, testaceous with fuscous sheaths. 
Observations. Described from a single specimen taken at 
Park City, Utah. Type in the National Museum. 
