FARR 
1873. ] 509 [Horn. 
P. maculata Lec. (Acrepis) Ann. Lyc., V, p. 218. 
Piceous-zeneous, shining, sparsely clothed with cinerous pubescence. 
Head and thorax globose, the latter narrower behind, truncate and mar- 
gined, densely punctured. Elytra parallel cylindrical, not wider than the 
thorax, rugosely punctured, suture, margin and three spots on each white. 
Length .34 inch ; 8.5 mm. 
The first spot is humeral, the second median, the-third narrow, lunate 
and near the tip. 
Notwithstanding the view expressed to me by Dr. LeConte, I suspect 
that this and the next species will prove to be one. 
P. quadrisignata Horn, (Acrepis) Trans. Am. Ent. Soc., 1868, p. 
135. 
/Mneous, shining, sparsely pubescent. Thorax not densely punctate. 
Elytra variable in color, surface moderately densely punctured and ru- 
gulose. Body beneath moderately densely punctulate, sparsely pubescent. 
Abdomen zeneous at the sides, rufous at the middle, sparsely punctulate. 
Legs eneous. Length .22-.36 inch ; 5.5-9 mm. 
Var. . Elytra blue with a small red humeral spot. 
Var. quadrisignata Horn. Elytra blue with a humeral and subapical red 
spot. 
Var. . Elytra blue, lateral margin red, uniting the humeral and sub- 
apical spots, the spots also larger in size. 
Var. . Similar to preceding, with the suture also red, anda small blue 
spot appears in the centre of the apical spot. 
Var. . The red color still further extends, so that the elytra are red 
with three blue spots, one at basal third, one behind the middle, and 
one apical. 
Occurs in Mariposa County, California. 
Synopsis of the Couypipa of the United States. 
By Grorce H. Horn, M.D. 
(Read before the American Philosophical Society, April 19, 1878.) 
The first arrangement of the genera of this family is due to Erichson, 
who created it, associating genera whose aggregate possesses very little 
homogeneity, no less in form and general external appearance than in more 
important structural characters. The family appears to be composed of a 
certain number of genera which form natural groups or tribes, as the 
Synchitini and Colydiini, around which are arranged other tribes com- 
posed of genera with feeble alliances among themselves and which seey 
to be like Cupes and Rhysodes, either relics of pre-existing faunz or in- 
differentiated in characters so that whatever position may be assigned them 
