60 Mr. S. H. Scudder on Mesozoic GocJcroaches. 



almost as far out, the branches of both nearly always simple. 

 The anal veins are only slightly irregular. Length of wing 

 15 millini. ; breadth 4 raillim. 



Triassic beds near Fairplay, Colorado. 



SCUTINOBLATTINA {(TKUTLVO'i), gen. nov. 



In this genus, composed of small species, the front wings 

 are decidedly more coriaceous than the hind wings, so that 

 the neuration is often more or less obscured by it. The wing 

 itself is convex, as in the modem Fhoraspis, and subtriangular 

 in form, its greatest width being near the base, while the tip 

 is bluntly pointed. The mediastinal and scapular veins are 

 again blended into one, which, instead of having a sinuous 

 course, is nearly or quite straight, and terminates below the 

 apex of the wing, while the externomedian vein follows 

 closely parallel to it, and the oblique veins of this and the 

 internomedian veins follow each other so as to make it diffi- 

 cult to tell where the line of demarcation may lie. The anal 

 veins sometimes fall on the margin and sometimes on the 

 anal furrow. 



Scutinoblattina Brongniarti^ sp. nov. 



In this interesting species the wings are very strongly 

 convex at the base and the whole surface is flecked with dark 

 spots. The branches part from the main veins at a similar 

 angle on either side of the middle of the wing. The anal 

 area extends nearly to the middle of the wing, where it is 

 marked by a considerable emargination, and its veins are 

 frequent, oblique, mostly simple, and terminate on the margin. 

 Length of wing 7 millim. ; breadth 3 millim. 



Triassic beds near Fairplay, Colorado. 



Named after Mr. Charles Brongniart, of Paris, well known 

 for his remarkable discoveries among the older fossil insects. 



Scutinohlatiina intermedia^ sp. nov. 



This species resembles the last, but is not marked by any 

 dots^ and the anal area, while shorter, shows no emargination 

 of the border at its extremity ; the anal veins are very close, 

 parallel to the inner margin, and terminate not on the margin, 

 but on the anal furrow. It further differs in that the externo- 

 median branches are considerably more longitudinal than 

 those terminating on the costal margin. Length of wing 

 7 millim. ; breadth 2-75 millim. 



Triassic beds near Fairplay, Colorado. 



