14 THE CANADIAN ENTOMOLOGIST. 



the outer as in humeralis, but I have one or two exiniples which are 

 puzzling to place in either species, and I feel a little doubtful as to the 

 specific limits of either form. 



The antennae are a little more than half as long as the body, the 

 basal joints piceous below, the punctures of the elytra are fairly well 

 arranged in striae on the disk and obsoletely biseiiate. 



D. subangidata, nov. sp. (Jac. in litt.). 



Head black with a large triangular fovea; antennae three-fourths the 

 length of the body, black, with the four or five basal joints fuscous and 

 the^three last (extreme tip of the eleventh excepted) white. Thorax trans- 

 verse, rufous, depressed, bifoveate (third obsolete) ; scutel black ; elytra 

 moderately coarsely punctate, black, a large oblong basilar spot, a median 

 transverse fascia, not attaining either the margin or suture, and a large 

 quadrate apical spot in each elytron, whitish flavous. Legs yellow with black 

 or piceous tibi^ and tarsi. Body below yellow with breast black. 

 Length, 8 mm. 



Seven examples, Marcapata, Peru. 



Very variable in the b'ght elytral marking, as noted hereafter. The 

 third joint of the antennae is 5^ longer than the second, the fourth shorter 

 than the preceding two, the colour of the basal joints varies somewhat in 

 the amount of black, some being much darker than others ; the thorax is 

 much broader than long, with a few fine punctures scattered over the 

 surface ; the two side fovea are distinct and the third just before the scutel 

 is obsolete; the sides are widely depressed and moderately sinuate, the 

 surface dull shining ; elytra are moderately dilated behind, only slightly 

 depressed behind the scutel. What I consider the typical light spot 

 marking varies at the bise so that the basal spot and median fascia may 

 unite and the black band between becomes a curved lunule from the 

 shoulder, running towards, but not reaching, the suture ; also the apical 

 spot may unite with the median fascia, leaving the band between as a more 

 or less well defined spot. In one example the spots are so suffused as to 

 indicate that specimens occur which are wholly light flavous, except the 

 margins. The colour of the tibiae and tarsi seem to vary from black to light 

 piceous according to the predominance of the black markings of the 

 elytra. 



