254 NORTH AMERICAN OEDIPODINAE (oRTHOPTERA; ACRIDIDAE) 



Explanation of Plates 



Plate XXVI 



Fig. 1. — Derotmema haydenii mescmhrinum new subspecies. Lateral outline 



of head and pronotum of male {type). Double Windmill, Texas. 



(X6) 

 Fig. 2. — Derotmema haydenii mesembrinum new subspecies. Dorsal outline of 



head and pronotum of female (allotype). Marfa, Texas. (X 4) 

 Fig. 3. — Derotmema haydenii haydenii (Thomas). Lateral outline of head and 



pronotum of male. Cheyemie, Wyommg. (X 6) 

 Fig. 4. — Derotmema haydenii haydenii (Thomas). Dorsal outline of head and 



pronotum of female. Cheyenne, Wyoming. (X 4^) 

 Fig. 5. — Derotmema piute new species. Cephalic outline of head of female 



(type). Mason, Nevada. (X 4|) 

 Fig. 6. — Derotmema piute new species. Dorsal outline of head and pronotum 



of female {type). Mason, Nevada. (X 4^) 

 Fig. 7. — Derotmema piute new species. Lateral outline of head and pronotum 



of female {type). Mason, Nevada. (X 4§) 

 Fig. 8. — Derotmema piute new species. Lateral outline of ovipositor jaws of 



female (type). Mason, Nevada. (X 10) 

 Fig. 9. — Mestobregma impexum new species. Lateral outline of head and pro- 

 notum of male {type). Milford, Utah. (X 5) 

 Fig. 10. — Mestobregma impexum new species. Cephalic outline of head of 



male (^i/pe). Milford, Utah. (X 5) 

 Fig. 11. — Mestobregma plattei plattei (Thomas). Lateral outline of head and 



pronotum of male. Newcastle, Wyoming. (X 5) 

 Fig. 12. — Mestobregma plattei plattei (Thomas). Cephalic outhne of head of 



male. Newcastle, Wyoming. (X 5) 

 Fig. 13. — Mestobregma terricolor new species. Cephalic outline of head of 



male {type). Pecos, Texas. (X 5) 

 Fig. 14. — Mestobregma terricolor new species. Lateral outline of head and 



pronotum of male {type). Pecos, Texas. (X 5) 

 Fig. 15. — Mestobregma terricolor new species. Dorsal outline of head and 

 pronotum of male {type). Pecos, Texas. (X 5) 



Plate XXVII 



Fig. 16. — Psinidia fenestralis frater new subspecies. Lateral outline of head 

 and pronotum of female {type). Katherine, Texas. (X 4) 



Fig. 17. — Psinidia fenestralis frater new subspecies. Lateral outline of ovi- 

 positor jaws of female {type). Katherine, Texas. (X 12) 



Fig. 18. — Psinidia fenestralis frater new subspecies. Dorsal view of antenna of 

 female (type). Katherine, Texas. (X 4^) 



Fig. 19. — Psinidia fenestralis fenestralis (kServille). Lateral outline of head 

 and pronotum of female. De Leon Springs, Florida. (X Ss) 



Fig. 20. — Psinidia fenestralis fenestralis (Serville). Lateral outline of ovi- 

 positor jaws of female. De Leon Springs, Florida. (X 10) 



Fig. 21. — Psinidia fenestralis fenestralis (Serville). Dorsal view of antenna of 

 female. De Leon Springs, Florida. (X 0) 



