Occasional Papers of tJie Museiun of Zoology 3 



C". Pace of female icitli long xello-zc lateral marks, and a band 

 across lozver margin of clypcus, the last not alzvays zvell 

 developed ; npper border of prothorax z^'ithout yellozv 

 marks. 



Prosopis elliptica Kirby. 



Floodwood, Sclioolcraft Co., July 29, 1915, (Gaige 33). 



b'-'. Larger species, z^'ith Jiaii'y thorax; no yellozc spots on 

 tubercles, stigma small. 



c\ Black, comparatiirly fiarrozc and elongate in both sexes; 

 male anteiuue greatly modified, the flageUnm thickened 

 before the middle. Peet z^'ith pulrUli. I'entral scopa of 

 female pale. 



Andronicus cylindricus Cresson. 



Floodwood, Scboolcraft Co.. July 13-14, (Gaige 19. 20). 

 Uoth sexes. In bis original description, based on a male from 

 Connecticut, Cresson says tbat the first r. n. meets the first t. c, 

 and second r. n. joins second s. m. "a little within its apex." 

 He also states that the vertex is sparsely clothed with short 

 pale hairs, and the upper surface of the thorax is sparsely 

 hairy. In our male the pale hair of the vertex and thorax 

 above is long and quite abundant, while in both sexes the first 

 r. n. joins the second s. m. a moderate distance from its base, 

 while the second joins it twice as far from the apex. Robert- 

 son's account of both sexes, as found in Illinois, appears to 

 agree with the ^Michigan insect. I infer that Cresson's type 

 was worn, and that the venation is variable, but it is just pos- 

 sible that there are two species. 



C". Blue and green.; male antenncc ordinary. Peet zcith pul- 

 villi. Ventral scopa of female black. 



