AMERICAN IIYMENOPTERA. 197 



on the sides of the following three segments, Inteous. Wings bright fulvous, the 

 apex tinged with fulvous; the costa and stigma bright rufo-fnlvous, the nervures 

 darker colored. 9 ■ Total length 10 mm. 



Clypeus distinctly longer than wide; in its centre is a black mark extending 

 from top to bottom, the top square, from there it becomes gradually widened to 

 the middle, then gradually narrowed to near the apex, which ends in a clearly 

 separated angle; the sides of the mark are irregular, the apex is transverse. 

 Apex of postscutellum smooth, transver.se. The sides of nietanotum become 

 gradually widened to a point in the middle from above and below ; the apex is 

 closely, finely, obliquely striated. Pro- and mesothorax rugosely punctured. 

 Metapleura? closely distinctly striated, the lower basal part more finely than the 

 rest. First abdominal segment cup-shaped, smooth, as wide as the second, which 

 is distinctly wider than long. The head, thorax and base of abdomen are 

 densely covered with long, fuscous black hair. The base of the thorax is trans- 

 verse, its sides not projecting. 



This species shows an approach to Hypodernus. 



Odyneru^i crotcliii sp. nov. 



Black ; the clypeus, antennal scape, a line on the basal third of the pronotum, 

 a narrow, more or less interrupted line on the upper edge of the pronotum, 

 tegula>, except for a brown spot in the middle, a large conical mark, obliquely 

 truncated above, on the pleurte below them, scutellum, a mark on the sides of 

 postscutellum, an oblique, oval transverse spot on the sides of metanotum below, 

 a line on the apex of the first abdominal segment above, one all round on the 

 apex of the second, the upper line dilated laterally, tlie lower one broadly dila- 

 ted in the centre, a line on the top of the fourth segment, the apex of the 

 femora, the tibise and the tarsi, sulphur-yellow, the basal parts of the legs 

 rufous. Wings highly iridescent, the front part and apex broadly violaceous, 

 the nervures and stigma black. J. Total length 7 mm. 



Head coarsely punctured, the clypeus with the punctures more widely separa- 

 ted, it is as long as wide, its apex ending in two stout teeth, the part between 

 them being depressed. Thorax narrower than the head, its base margined, quite 

 transverse, the sides of its apex broadly rounded, with a distinctly defined fur- 

 row down the centre, the sides below with two stout teeth, the upper broad. 

 Base of postscutellum with a broad, raised, coarsely crenulated ridge, its apex 

 bluntly rounded. First abdominal segment longer than it is wide at the apex, 

 the base smooth, distinctly pedunculated, the rest coarsely, closely punctured ; 

 the second is more finely and more closely punctured, except at the apex, where 

 there is a more strongly punctured belt, which is slightly depressed in the mid- 

 dle; the segment is longer than wide and is distinctly narrowed at the base. 



The male is similarly colored, the clypeus yellow, with a semi-circular incision 

 in the apex; the coloration is the same, except tliat the yellow markings are 

 smaller and the legs are black to near the apex of the femora ; the antennal scape 

 is yellow below ; the hook is short, narrow, not reaching to the base of the joint. 

 The pubescence in both sexes is silvery. 



Lee County, Texas ; May. 

 Belongs to Saussure's Section B, a. 



TRANS. AM. ENT. SOC. XXXIV. JULY, 1908. 



