54 Mr. S. H. Scudder on Mesozoic Gochroaches. 



Of the above species P. Franckii, in spite of its conspicuous 

 white band, is almost the dullest ; the male is a little brighter 

 in colouring than the female, and has a slightly narrower 

 white band across the primaries, but does not otherwise differ. 

 It comes only from Java (five examples). 



Even more dull in colour is P. uniformisj and the absence 

 of the white band makes it appear more sombre than it really 

 is. It differs in many respects from P. FrancMi^ the greater 

 portion of the outer edge of the blue belt being occupied by a 

 long shallow sinus instead of being acutely zigzag : some of 

 the markings on the under surface are also confluent and the 

 discoidal spots are clearer in outline. I can only guess at 

 the probable habitat, as at present we only possess one male. 



P. angelica is the brightest of all, the female being slightly 

 less so than the male ; the blue belt is sometimes a little wider 

 than in P. Franckii and its outer edge is much less zigzag ; 

 it has white dashes on the belt in both sexes ; the markings 

 below are very similar, but the ground-colour is noticeably 

 different. It occurs in Tenasserim, Borneo, and Sumatra 

 (five examples). 



P. regalis is duller in colouring than the preceding, and 

 corresponds with P. uniformis in the absence of white on the 

 blue belt ; it, however, differs from the three preceding species 

 in the great width of the blue belt, the blue marginal spots on 

 the primaries, the shorter and less caudate secondaries, the 

 cruciform character of the black submarginal markings on 

 under surface of primaries, the filled-in discoidal markings 

 on all the wings, the inner half of external area of secondaries 

 below being greyish olivaceous crossed by oblong black 

 patches with reddish external borders, the shorter green and 

 black submarginal arched spots, and several other characters 

 to be described hereafter. I have only seen one male of this 

 very distinct species, from Manipur. 



VII. — Notes on Mesozoic Cockroaches. 

 By Samuel H. Scudder*. 



I. Pterinoblattina, a remarkahle Type of Paloeohlattarice. 



Among the many fossil cockroaches figured by Westwood 

 thirty years ago was one which Giebel afterwards named 

 Blatta pluma, on account of the resemblance of its neuration 

 to the barbs of a feather, where the shaft is on one side. 

 Several species are now known, and on account of this curious 

 arrangement of the veins, the generic name 



* FroTii the Proc. Acad. Nat. Sci. Philad, 1885, pp. 105-115. 



