AMERICAN COLKOPTKRA. 167 



The following localities are represented in the specimens at hand : 

 New Jersey ; Pennsylvania; Canada; Washington, D. C. ; Kansas 

 (Onaga). It is recorded from Pittsburg and Cincinnati by Hamil- 

 ton and Dury respectively. "Mass." (Blanchard). 



One example from Grand Ledge, Mich. (Hubbard and Schwarz), 

 is small, red-brown, and very different in appearance from typical 

 altemans, but the gap is so nearly filled by intermediates that I 

 have not thought it safe to separate it without further evidence. 



SITODREPA Thomson. 



Oblong, moderately robust, pubescence rather long and some- 

 what bristling. Head much narrower than the prothorax, eyes 

 only moderate in size and not very strongly convex, the front more 

 than twice as wide as their vertical diameter. Last joint of maxil- 

 lary palpi moderately elongate, gradually dilated apical ly and 

 obliqely truncate, preceding joints small and narrow ; last joint of 

 labial palpi broadly triangular, the apex nearly squarely truncate 

 and slightly sinuate. Antennae less than half as long as the body, 

 11 jointed, first joint elongate, but rather stout, second similar but 

 much smaller, third to eighth small, third, fifth and seventh evi 

 dently larger than the fourth, sixth and eighth ; ninth about equal 

 to the five preceding and rather more than twice as wide, tenth and 

 eleventh subequal in length and width to the ninth ; the three 

 united much longer than all the preceding. Prothorax as wide as 

 the elytra, the latter finely striate, striae finely punctate. Proster- 

 num rather short before the coxae, which are distinctly separated by 

 the triangular intercoxal process; middle coxae separated. First, 

 third and fourth ventral segments subequal, second longer, fifth still 

 longer and nearly equal to the third and fourth united. First tar- 

 sal joint subequal to the next two, fifth joint stout, a little longer 

 than wide, but not narrower at base. The tibial spurs are very 

 small and difficult to see. 



This genus contains only the cosmopolitan panicea, which has 

 been everywhere diffused in various organic commercial products, 

 both animal and vegetable. It is so well known as to need only a 

 brief description. 



1. S. panicea Linn. — Keddish brown, with abundant rather long aud some- 

 what bristling pubescence. Prothorax a little narrowed from the base, side mar- 

 gin narrow in front, slightly explanate posteriorly, finely serrate; front angles 

 somewhat rounded, hind angles broadly rounded, disk scarcely elevated poste- 



TEANS. AM. ENT. SOC. XXXI. MAY, 1905. 



