100 
Psyche 
[June-Sept. 
omositoides and concinna, agreeing in this respect with 
imperialis. The margins of the thorax and the epipleurae 
are more narrowly reflexed than in concinna and more 
broadly reflexed than in imperialis. 
Cryptarcha concinna Melsheimer 
Cryptarcha concinna Melsheimer, 1853, Cat. of the desc. 
Col. of U. S., p. 41. 
Cryptarcha liturata Leconte, 1863, List Col. of N. Amer. 
1: 30. 
Cryptarcha picta Melsheimer, 1866, Proc. Acad. Sci. Phila- 
delphia 2 : 107. 
Cryptarcha bella Reitter, 1873, Syst. Eintheil. Nitid. p. 150. 
This is an extremely variable species, but is distinctive in 
its oval outline, explanate pronotal margins, and shape of the 
prosternal process as shown in fig. 8. The range of concinna 
is from Massachusetts to Florida, west to southern Cali- 
fornia and Oregon. 
