Pars 16 Pinctodia. — Dyadentomum. 61 
Genus: Pinctodia Sellards. 
Pinctodia, Sellards, Amer. Journ. Sc. XXIIl. 352. 1907. — 
Handlirsch, Revis. pal. Ins. 64. 1919. 
eiirta Sellards. Pinctodia curta, Sellards, Amer. Journ. Sc. 
XXIII. 252. f. 11. 1907. — Handlirsch, Revis. pal. Ins. 
64. 1919. 
Genus: Mecus Sellards. 
Scopus, Sellards, Amer. Journ. Sc. XXIII. 352. 1907. 
Mecus, Sellards, Amer. Journ. Sc. XXVll. 151. 1909. — 
Handlirsch, Revis. pal .Ins. 64. 1919. 
•.rracilis SeUards. Scoj>us gracilis, Sellards, Amer. Journ. Sc. 
XXIII. 352. f. 12. 1907. 
Mectts gracilis, Sellards, Amer. Journ. Sc. XXVII. 151. 1909. — 
Handlirsch , Revis. pal. Ins. 64. 1919. 
Genus: Esca Sellards. 
Theraies, Sellards, Amer. Journ. Sc. XXIIl. 354. 1907. 
Esca, Sellards, Amer. Journ. Sc. XXVII. 151. 1909. — 
Handlirsch, Revis. pal. Ins. 64. 1919. 
plana Sellards. Tkerates planus, Sellards, Amer. Journ. Sc. 
XXIIl. 354. 1907. 
Esca plana, Sellards, Amer. Juorn. Sc. XXVII. 151. 1909. — - 
Handlirsch , Revis. pal. Ins. 64. 1919. 
Ephemerida incertae sedis. 
Genus: Thnetus Handl. 
Uut. Perm. Schuni (Gouv. Kasan) RuBland. 
Thnetus, Handlirsch , Mem. Acad. Petersb. XVI. (5) 7. 1904. 
Foss. Ins. 386. 1906. Revis. pal. Ins. 64. 1919. 
Stuckenbergi Handlirsch. Thnetus Stuckenbergi, Handlirsch . 
Mem. Acad. Petersb. XVI. (5) 7. 1904. Foss. Ins. 386. t. 37. f. 16, 
1906. Revis. pal. Ins. 64. 1919. 
Genus: Phthartus Handl. 
Unt. Perm. Kargala in Orenburg, RuBland. 
Perla pp., Xetschajew, Permformation 382. 1894. 
Phthartus, Handlirsch, Mem. Acad. Petersb. XVI. (5) 6. 
1904. Foss. Ins. 386. 1906. Revis. pal. Ins. 65. 1919. 
Nctschajevi Handl. Perla sp., Xetschajew, Permformation 382, 
f. 4. 1894. 
Phthartus Netschajewi, Handlirsch, Mem. Acad. Petersb. 
XVI. (5) 6. 1904. Foss. Ins. 387. t. 37. f. 17. 18. 1906. Revis. pal. 
Ins. 65. 1919. 
rossicus Handl. Phthartus rossicus, Handlirsch, Mem. Acad. 
Petersb. XVI. (5) 6. 1904. Foss. Ins. 387. t. 37. f. 19. 1906. Congr. 
intern. Ent. 183. t. 8. f. 13. (Rekonstr. ) 1911. Handb. Ent. III. 
140. f. 71 (Rekonstr.) 1920. Revis. pal. Ins. 65. 1919. 
Genus: Dyadentomum Handl. 
Unt. Perm. Kolpakovo, Gouv. Perm. RuBland. 
Dyadentomum, Handlirsch, Mem. Acad. Petersb. XVI. (5) 
7. 1904. Foss. Ins. 387. 1906. Revis. pal. Ins. 65. 1919. 
permense Handl. ,,Orthopteron“ , K r o t o w , Artinskische Etage. 
189. t. 1. f. 1. 1885. 
Dyadentomum permense, Handlirsch, Mem. Acad. Petersb. 
XVI. (5). 7. 1904. Foss. Ins. 387. t. 37. f. 20. 1906. Revis. pal. 
Ins. 65. 1919. 
