424 PHYTOPHAGA. 



the ten-spotted normal form. Some of these banded varieties approach in the 

 pattern of the elytra as well as in structural characters so close to an equally most 

 variable species (Q2. scissa, Germ.), that it is quite possible that the latter and CE. 

 decemguttata and its varieties are one and the same species ; I have at all events not 

 been able to find satisfactory characters for their separation on account of the many 

 intermediate degrees in respect to coloration and even structure. 



To separate these numerous forms into so many different species would only add to 

 the confusion and the difficulty of determination, since no line can be drawn in the 

 variation of the colouring and pattern. There is, however, one form, obtained at 

 Presidio only, which seems to differ from the specimens from any other locality ; in 

 this variety the elytra are dark fulvous, with the usual number of pale spots, and 

 placed as usual ; but the basal spot is not round but transverse, and projects in a short 

 branch to the basal margin at its middle, and the transverse band in front of the apical 

 spot is deeply emarginate or dentate at its posterior margin; other differences of 

 importance I am unable to see. 



41. (Edionychis duodecim-maculata. (Tab. xxili. fig. 16.) 



(Edionychis 12-maculata, Jacoby, P. Z. S. 1880^ p. 176 1 . 

 Eab. Guatemala, Capetillo 1 {Champion). 



At first sight this species seems to be but another variety of CE. decemguttata, in 

 which the posterior band of the elytra has become separated into two spots ; but other 

 and constant differences are present to assist in the recognition of the species. The 

 eyes in all the specimens are always more widely separated than in CE. decemguttata ; 

 the two posterior spots on the elytra are placed in an obliquely concave direction (in 

 (E. decemguttata the posterior band is always convex), and the elytral margins and 

 epipleurse are constant metallic blue. The species was only received from the above 

 locality, and the nine specimens before me do not show any marked variation. 



42. (Edionychis brunneovittata. 



Brownish piceous, above testaceous ; elytra with a transverse narrow band below the base, joined by a 

 longitudinal stripe at the shoulder and another transverse broader band below the middle, dark fulvous. 



Length 4 lines. 



Head impunctate, with a central fovea, the space between the eyes broader than their diameter ; antennae 

 fuscous, the first three joints fulvous, shining, the fourth joint longer than the third ; thorax with very 

 strongly rounded and flattened sides, narrowed in front, the anterior angles acute but not produced into 

 a tooth, the surface impunctate; elytra widened at the middle, narrowed near the apex, very finely 

 punctured, shining, testaceous, with a narrow dark fulvous band before the middle extending very nearly 

 or quite to the sutural and lateral margins, a similarly coloured broader band is placed immediately below 

 the middle, and a longitudinal stripe extends from the base within the shoulder to the anterior band. 



Eab. Panama, Bugaba, Volcan de Chiriqui {Champion). 



The design of the elytra in this species resembles CE. tricruciata, Germ., with the 



