ART. 17 WASPS OF THE GENUS TIPHIA ALLEN AND JAYNES 67 



second-degree density. Front perceptibly shagreened below, with a 

 short, irregular, impunctate stripe and a very distinct narrow carina 

 having a well defined groove on its apex; primary punctures elon- 

 gated toward ocelli, irregularly distributed toward the vertex, much 

 denser and more evenly distributed on the lower half, denser medially 

 than toward the eyes ; combined area of the punctures exceeding that 

 of their interspaces over the greater part of front. Clypeal extension 

 with its primary punctures mixed with minute secondaries which ex- 

 tend irregularly nearly to apex, leaving no well defined impunctate 

 apex. Antenna with its first joint sharply angulate apico-ventrally ; 

 third joint slightly longer than the greatest width. Pronotum with 

 transverse carina complete and very strongly developed; primary 

 pimctures very large, their posterior margins sloping out to surface, 

 evenly distributed, their total area much exceeding that of the inter- 

 spaces; secondary punctures very sparsely and widely distributed; 

 transverse discal band lacking; median longitudinal extension of the 

 punctate area about equal to that of the impunctate area. Side of 

 pronotum usually with a very shallow, scarcely perceptible groove 

 across the center, which is, however, somewhat more conspicuously 

 marked than the irregular grooves or striae above and below the 

 central groove ; punctures more or less distinctly separated in a wide 

 band just behind the carina; a round, deeply concave spot near the 

 alar angle bordered anteriorly by concentric ridges. Scutum with 

 the notauli and antero-medial grooves continuous. Mesepisternum 

 with a premarginal crease, (not a groove), on its posterior slope. 

 Metanotum usually divided by a shallow medial depression ; densely 

 bipunctate, the jDrimary punctures nearly as large as those of the 

 scutellum. Legs with the major calcarium of the hind tibia widest 

 just before middle; hind basitarsus with a very deep, long groove; 

 outside with a group of two to several sharp, stout spines, one of 

 which is apical. Tegula usually partially shagreened; latero-anterior 

 border with vague impression, hind border with raised edge, in front 

 of which there is often an oval, shallowly impressed area more clearly 

 defined laterally. Wings moderately smoky; first cubital mark usu- 

 ally quite conspicuously developed. Propodeal areola keystone- 

 shaped, two times as long as wide, the enclosed area somewhat reticu- 

 late; median carina sometimes complete but usually more or less 

 broken. Lower portion of sides of propodeum polished, striate, with 

 posterior half minutely setulo-punctate. Posterior aspect of pro- 

 podeum sparsely punctate on disk ; carina tapering abruptly, and con- 

 fined to lower half or less. First tergite with a preapical band of a 

 single, well differentiated row of primary punctures. First sternite 

 flat, polished, and without sculpturing save a few large punctures on 

 anterior sides dwindling rapidly towards rear; no lateral grooves. 



