80 H. C. FALL. 



before me: New York; New Jersey; Plummer's Island, Mary- 

 land; District of Columbia; Ft. Monroe, Virginia; Savannah 

 (type locality) and Thomasville, Georgia; Florida; Huntsville, 

 Alabama; Louisiana; Tennessee; Bee Spring, Kentucky; Cin- 

 cinnati, Ohio; Indiana; northern and southern Illinois; Ann 

 Arbor, Michigan; Dane County, Wisconsin; Iowa City, Iowa; 

 St. Louis and St. Charles, Missouri; Arkansas; Argentine, 

 Benedict and Onaga, Kansas; Nebraska; Texas; Utah. 



Barring texana, which is closely allied, there is little danger 

 of mistaking this species for any other. The rounded clypeus, 

 strongly transverse prothorax with sides straighter and less 

 convergent than usual, with the distinctly impressed basal 

 margin, and the rather coarse and dense punctuation, give 

 the species an exceptionally strong individuality. The differ- 

 ences from texana . re given under that species. It is certainly 

 possible and I am rather strongly inclined to believe that the 

 unique type of Alobus fulvus Lee. is only a somewhat aberrant 

 form of D. harperi. An examination of the type shows that 

 LeConte was in error in saying that Alobus differed from 

 other Diplotaxis in lacking the narrow membranous front 

 margin of the thorax. The form of the terminal joint of the 

 maxillary palpi is truly more elongate and cylindrical than 

 in any harperi which I have examined, it is, however, a fact 

 that this terminal joint is unusually slender in harperi and 

 varies to such an extent that the difference between the 

 extremes is greater than between one of them and Alobus. 

 The color in Alobus is a paler yellow than in any harperi I 

 have seen, but this is of no consequence and might happen 

 in any species. It is, moreover, very remarkable, if the 

 species is a good one, that in the more than fifty years since 

 its description, a second specimen has not yet occurred, and 

 that in a region so constantly worked over as the type lo- 

 cality — New York. 



81. D. texana Lee. 



This species resembles the preceding in many respects and 

 notably in two of its important characters, viz. : the rotundate 

 clypeus and impressed basal margin of the prothorax; the lat- 



