228 [October, 



thought it wise to submit it to Dr. Eusliii for determinatiou ; and 

 having now received it back from him as undoubtedly a ? of 

 P. pnbescens, I no longer hesitate to introduce it. 



From our other Periclista spp. {nielanocephala, F., and lineolata, 

 KL, cf. Ent. Mo. Mag., June, 1907), puhescens $ , Zadd., may at once 

 be distinguished by the colour of the abdomen. This has its sides 

 only {i.e., so much of each dorsal plate as is bent round to overlap the 

 edges of the ventral surface) brightly testaceous, while, in strong 

 contrast to these reddish parts, the actual dorsum and the venter 

 itself are black, save that each segment has a well defined white apical 

 margin. In melanocephala the whole abdomen (above and below) is 

 testaceous. In lineolata that colour is absent altogether ; the abdo- 

 minal segments are black throughout, except at their whitish apices. 



Other characters for distinguishing the insect are as follows : and 

 I may add that this specimen, which Mr. Donisthorpe has most kindly 

 presented to me, and which lies before me as I write, is considerably 

 larger than any which I possess of melanocephala or lineolata, its 

 length being very nearly 8 mm. 



Head black, except the whitish labrmn. Tliorax black, with the corners of 

 the pronotiim (widely) and the tegvilse lacteons, the cenchri glassy-white. 

 Abdomen l)lack, but each segment above and beneath ring-ed with clear white 

 at the apex, and the sides of each dorsal-plate and all that part of it which 

 overlaps the venter, brightly i-iifo-testaceoiis. 



Wings clear. The long and narrow stigma and the whole of the sub-costa 

 dark, as are the other nervvu-es, except at their bases which are lacteous like 

 the tegulffi, &c. (This is especially noticeable in the costa!) Humeral area in 

 hind wing appendiciilate. 



Legs black at the base, but (n.b.) the femora above and below red, almost 

 from base to apex. The colour of the tibiae and tarsi is obsciu-ed in most lights 

 by the dense grey pubescence which clothes them. They are, however, dusky 

 behind, and pale, or almost white — more or less — in front. 



The antennae look longer than in lineolata, but the proportions of the 

 several joints are very similar in both species. The clypeus is somewhat raised, 

 and its apex angularly excised. The vertical area is very timiid and well- 

 defined, bounded laterally by conspicuous f ovese, but the sculpture of the frons 

 is rather vague and shallow. The tempora behind the eyes are somewhat 

 sulcate, and sharply separated from the occiput, i.e., " margined." 



The head and thorax are clothed like tlie legs with a grey pilosity. The 

 abdominal segments above are finely and closely striate (transversely), but at 

 the sides and beneath they appear rather to be rugosely punctured. 



According to Zaddach, the ^ diifers from the $ in having no 

 red on the abdomen, and very little on the femora. But there seems 



