H. M. Morris 109 



19. Nbedham, J. G. (1902). Occurrence oi Bibio fraternus. American Naturalist, 



vol. XXXVI, pp. 181-185. 



20. Ormerod, E. a. (1884). Report on Observations of Injurious Insects, p. 56. 



21. Reaumur, R. A. F. de (1741). Memoires des Insectes, tome 5, 1"'^ partie, p. 70. 



22. ScHAROV, N. ( 1915). Injurious Insects in Govt, of Astrachan 1912-1914. Pub. 



by Entomological Station of Astrachan. (Abstract in Review of Applied 

 Entomology, 1915.) 



23. Sharp, D. (1909). Cambridge Natural History, vol. vi. Insects, Part II, 



pp. 476-477. 



24. Strickland, E. H. (1916). Agric. Oazefie of Canada, vol. iii, 7, July. 



25. SuDEiKiN, G. S. (1913). Pests of Agricultural Plants in Govt, of Voronezh, 



1912. Pub. by Zemstvo, Voronezh. (Abstract in Review of Applied Entomo- 

 logy, 1914.) 



26. Theobald, F. V. (1907-1913). Reports on Economic Zoology. 



27. Theobald, F. V. (1909). Journal of the Board of Agriculture, October, p. 567. 



28. Theobald, F. V., McGowan,' W., and Leigh, H. S. (1916). Reports on the 



food of the Rook, Starhng and Chaffinch. Supp. 15 to Journ. of Board of 

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29. Walsh, B. D. and Rlley, C. V. (1869). Plum-tree Insects. Amer. Ent. 



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10. DESCRIPTION OF PLATE II. 



Fig. 1. Almost fully grown larva of Bibio Johaniiis, dorsal aspect, sp. spiracle of first 



segment; sp.^ spiracle of sixth segment; sp.^.^ spiracle of twelfth segment. x 12. 

 Fig. 2. Pupa of Bibio Johannis, dorsal aspect, jis. prothoracic spiracle. x 12. . 

 Fig. 3. Pupa of Bibio Johannis, ventral aspect, an. antenna case (right); /. leg-case of 



right leg of first pair; /.g leg-case of right leg of third pair; %v. wing-case (right). x 12. 

 Fig. 4. Posterior end of larva, dorsal aspect. 11, eleventh segment ; 12. twelfth segment ; 



sp. spiracle of twelfth segment. x 30. 

 Fig. 5. Head of larva, from above, ant. left antenna; lab. labrum; m. right mancUble; 



cl. clypeus. x 60. 

 Fig. 6. Part of an intersegmental region, surface view. x 180. 

 Pig. 7. Portion of cuticle, surface view. x 180. 

 Fig. 8. Ditto, lateral view. x 180. 



8—2 



