AMERICAN COLEOPTERA. 283 



4. D. diliita sp. nov. 



Mixed with elongata in Mr. Fuch's collection, and \\\i\\ fuscula in 

 the National Museum collection, were specimens from Massachu 

 setts, New York and Michigan (Detroit), which I have ventured to 

 separate under the above name. Superficially these specimens most 

 closely resemble very pale examples of elongata, and they will proba- 

 bly be found in most eastern collections mixed with these or possibly 

 tedacea. Structurally they are nearest fuscula, with which they 

 closely agree in most respects. There is in diluta, however, no sign 

 of the deep bronze color so characteristic of the elytra in fuscula, 

 the entire insect being pale testaceous, the thorax slightly darker 

 and the elytra feebly washed with green. The form is also a little 

 more elongate and the elytra somewhat less coarsely punctate. The 

 clypeal suture is rather deeply impressed, and by this means as well 

 as by the less densely but rather more deeply punctate clypeus, it 

 may be readily separated from elongata. In addition to this it may 

 be said that in diluta the hind legs are entirely pale, and the inner 

 spur of the hind tibia in the male is distinctly broader and more 

 obtuse, becoming usually slightly dilated at apex, much as in sub- 

 vittata. From both subvittata and testacea, diluta is distinguished 

 by the impressed clypeal suture, and from the latter still further by 

 the more narrowly reflexed clypeus, the more deeply impressed sub- 

 apical marginal line of the prothorax, and the greater disparity 

 between the hind tibial spurs. I believe the range of the species to 

 be distinctly more northern than that of fuscula. 



As an illustration of what may be the state of afl^airs in many 

 eastern collections, I quote the following from a letter just received 

 from my friend Mr. Frederick Blanchard, who, at my suggestion, 

 looked through the material in the Cambridge Museum. Mr. 

 Blanchard writes "There is a large series of Dichelonycha elongata 

 in the LeConte collection, and at the end of the last row were two 

 likely looking specimens, one of which proved to be your new spe- 

 cies. In the museum miscellaneous uusorted specimens I found 

 four: a pair from Virginia; 1 9 , Lawrence, Mass. ; 1 J , Sherborn, 

 Mass., June 7, '91. In my own material of about two dozeu speci- 

 mens I could find none, but I have little doubt it occurs here." 

 (Tyugsboro, Mass.) 



5. D. fus«cula Lee. 



As has already been remarked, this is the only species in our 



TKANS. AM. ENT. SOC, XXVII. AUG., 1901. 



