472 SCUDDER ON THE TRIASSIC INSECTS OF COLORADO. 



Cercopyllis adolescens. 



PI. 42, fig. 12. 



A single fragment of the tip of a wing which resembles C. justiciae rather than the 

 last species, but in size agrees better with the latter and has the same apical curve. The 

 radial vein comes much nearer to the tip of the wing than in either of the others, and has 

 a decided curve in opposition to the costa just before the final bend. From what can be 

 seen of the ulnar vein, it would seem to be constructed as in the others, but the final fork 

 is earlier and its relation to the preceding and to the oblique end of the radial vein more 

 as in C. justiciae than as in C delicatula. Nothing of the other veins can be seen. The 

 membrane and veins are clothed precisely as in C. delicatula, though less elistinctly, and 

 the hairs appear to be shorter (perhaps more erect) and if anything more distant. 



Length of fragment, 3.2 mm.; breadth, 1.4 mm. 



One specimen, No. 41. 



EXPLANATION OF PLATES. 



Plate 41. 



All the drawings are by Mrs. Katheriiic Peirsou Ramsay and are maguififd \. 



Fig. 1. Spiloblattina triassica. 



Fig. 2. Sinlollattina guUala. 



Fig. 3. SpUoblattina maryinata. 



Fig. 4. Spiloblattina garilineri ; "hiwi ^yia^. 



Fig. 5. PoroblaUina arcuata. 



F'ig. 6. Spiloblattina gardineri. 



Fig. 7. Etoblattina persistens. 



Fig. 8. Spiloblattina gardineri. 



Fig. 9. Anttiracoblattina triassica. 



Fig. 10. Spiloblattina gardineri. 



Fig. 11. Poroblaltina lakesii. 



Platk 42. 

 The drawings as on tlie preceding plate. 



Neorthroblattina atlenuata. 



Neorthroblatlina albolineata. 



Sculinoblattina recta. 



ScutinoJilaltina intermedia. 



Sculinoblattina brongniarti. 



Cercopyllis justiciae. 



Neorthroblattina rotundata. 



The same. 



Neorthroblattina lakesii. 

 . Etoblattina persistetis. 

 11. Cercopyllis delicatula. 

 Fig. 12. Cercopyllis adolescens. 

 Fig. 13. PHrablaUina aefjua. 

 Fig. 14. Spiloblattina guttata ;him\\y\ng. 

 Fig. 15. Neorthroblattina la/ccsii ; pf(>t\u>ra,(;\i: n]\\vli\. 

 Fig. 16. ScHtinoblnttina recta ; protlioracic shield. 

 Fig. 17. Petrahlaltina mcieri. 



Fig. 18. NeorthrohUutina nlbnlincata ; protliorack' sliicld. 

 Fig. 10. Etoblattina persistens ; protlioracic sliicld. 

 Fig. 20. Etoblattina sp. 



