150 ENTOMOLOGICAL NEWS [April, '09 



This species is not closely related to any described American 

 species. It seems nearest to tumidus Pack., but the sculpture 

 of the head and thorax is different, the mandibles and scape are 

 black and there are many other differences. 



The particular fore femora would perhaps be ground for 

 making a new subgenus for it, but I believe there are already 

 more subgenera than are necessary. 



Grabro (Thyreopus) lacteipennis n. sp. 



9 . Length 8.5 mm. Rather slender. Anterior margin of the clypeus 

 rounded out, not dentate or emarginate; no clypeal carina. Head with 

 distinct somewhat separate punctures. Ocelli in a low triangle ; the dis- 

 tance between lateral ocelli greater than the distance to the nearest 

 eye margin ; no furrow from the anterior ocellus. Scape long, so that 

 the flagellum is not twice as long as it is; third antennal joint but little 

 longer than the fourth. Pronotum rather long, not furrowed either 

 transversely or longitudinally; lateral angles sharp, but hardly dentate. 

 Dorsulum and scutellum with distinct, separate punctures. Mesoplurae 

 with more widely scattered punctures, the furrow not foveolated. Met- 

 anotum with a shallow middle furrow, obliquely striated. Metaplurae 

 finely striated ; posterior face with a few indistinct transverse striae ; 

 f ovea elongate distinct ; lateral carinae not strong, hardly extending to 

 the middle. Four hind tibiae rather strongly spinose on the outer 

 margin. Venation as in tumidus Pack. Abdomen impunctate, rather elon- 

 gate. Pygidium broad, triangular, rounded at the apex, covered with long 

 hair. Color black ; mandibles in middle and tegulae reddish, scape in 

 front, two spots on pronotum, tubercles, spot on the anterior femora 

 apically, all the tibiae exteriorly, postscutellum, wedge shape spots on 

 all the abdominal dorsal segments, (the second and third sinuate), 

 ivhitish. Clypeus, cheeks, and face above the level of the antennae with 

 dense silvery pubescence ; the rest of the insect nude. Wings milky- 

 hyaline, iridescent; venation pale testaceous. 



Habitat. Unknown, but perhaps Denver, Colo. (S. A. 

 Johnson). 



This species should be known at once by the milky-pyaline 

 wings. In Fox's table it falls near tcmiiglossus and tumidus. 



Crabro (Blepharipus) tridentatus n. sp. 



$ . Length 7 mm. Anterior margin of the clypeus very slightly 

 produced into the middle, with three distinct obtuse teeth ; middle carina 

 present but not strong. Eyes large, converging strongly towards the 

 clypeus so they are quite as wide at the clypeus as the width of the 

 clypeais in the middle. Head shining, with five scattered punctures. 



