2 4 8 ENTOMOLOGICAL NEWS. [June, 'oS 



by the pronotum being dentate laterally, having- no yellow on the 

 metanotum, etc. While in Ashmead's table it runs to Cuphop- 

 terus Moraw., it does not seem to be closely related to any of 

 the species of that group. 



Crabro opwana* n. sp. 



$ . Length 7-9 mm. Clypeus rounded on the anterior margin, 

 slightly emarginate in the middle, middle carina not very strong but 

 still plainly seen; front between eyes from a little above the middle 

 of eyes smooth, shining; near the eyes there are a few striae; rest 

 of head with large, distinct, well separated punctures; ocelli in a 

 triangle; scape wider at apex than at base; flagellum stout, first 

 and second joints equal, smooth, without a fringe of hairs ; prono- 

 tum rather longer than usual, a distinct, slender, sharp tooth at 

 anterior corner; (this tooth is stronger in some specimens than 

 others); dorsulum, scutellum with large distinct punctures; meso- 

 pleurse strongly strio-punctate ; mesopectus rather finely punctured; 

 episternum and epimeron of metathorax distinctly striated with strong 

 striae; metathorax without an enclosure, dorsulum and posterior face 

 strongly punctured, the dorsulum more strongly; first joint of hind 

 tarsi distinctly longer than the longest spur of hind tibiae ; anterior 

 femora produced beneath for the entire length, near the base is a 

 sharp tooth; (in some specimens there is another much smaller 

 tooth near the apex) ; middle femora produced beneath so that when 

 viewed from behind each is somewhat rectangular ; posterior femora 

 normal ; posterior tibiae serrated on the outer margin ; middle tibiae 

 not serrated, without spur at apex ; first recurrent nervure in apical 

 sixth of cell; abdomen strongly constricted between the first and 

 second segment, and less so between segment two and three, and 

 sometimes three and four; basal segments with distinct, well sep- 

 arated punctures, apical segment very finely punctured ; venter with 

 some well separated punctures. Color black; scape except a spot 

 behind, tubercles, sometimes two spots on pronotum, spots on first 

 six abdominal segments above, (these spots meet on segments five 

 and six, forming a band), apex of anterior and middle femora (the 

 yellow on the anterior femora is wider beneath) legs below femora 

 except a black spot on four posterior femora within, yellow; hind 

 tarsi somewhat infuscated ; antennae beneath somewhat testaceous but 

 not strongly so. Wings dusky hyaline, apical half a little the darker ; 

 nervures and stigma dark brown (the stigma in one specimen is 

 pale brown.) Clypeus, lower half of inner orbits, lower part of 

 cheeks, sides of thorax and pectus with silvery pubescence. 



* Opwan is the Chippewa (Indiana) word for thigh. Used here on account of the spine 

 on the fore femora. 



