98 
Psyche 
[June-Sept. 
this name are separated below and the differences between 
the two species are given in the description of strigatula. 
Fig. 1. Ventral views of the prosternal processes in Cryptarcha. 
1, C. ampla ; 2, C. glabra ; 3, C. strigata ; 4, C. strigatula n. sp.; 
5, C. imperialis ; 6, C. gila n. sp.; 7, C. omasitoides (after sketch of 
B. M. specimen by Dr. H. Scott) ; 8, C. concinna. 
Cryptarcha strigatula n. sp. 
Cryptarcha strigata auctt. (partim ) . 
Cryptarcha concinna Melsh., Reitter, 1873, nec Melsh., 1853, 
Syst. Eintheil. Nitid. : p. 150. 
As the name implies this species is a diminuitive relative 
of strigata. It is very similar to strigata, egg-shaped, 
piceous, alutaeous, sparsely pubescent, with pale setae irreg- 
ularly arranged on the pronotum but in seven indistinct 
rows on each elytron. The two transverse sinuous fasciae 
are much as in strigata, except that the anterior may reach 
the sutural margin of the elytra. The prosternal process is 
broadened and emarginate at the tip in strigata, but only 
slightly broadened and rounded at the tip in strigatula (figs. 
3, 4). The length is 2. 7-3. 2 mm., whereas the length of 
strigata is 3.2-4. 2 mm. The minimum length of strigata is 
from the literature and must be unusual, since the smallest 
