108 Larvdl ami Fnpal Stages of Scatopse Notata, L. 



The pupa of Scatopse difters from that of Bibio in being broader and 

 less tapering towards the anal extremity, in the presence of branched 

 prothoracic spiracles, in the prominently projecting abdominal spiracles, 

 and the total absence of the cephalic and caudal processes. A further 

 difference is afforded by persistence of the larval cuticle to form a 

 covering for the pupa. 



Until the larvae and pupae of other genera of Bibionidae have been 

 fully studied it is scarcely possible, in our present state of knowledge, to 

 judge whether these differences are of a sufficiently fundamental nature 

 to lend support to the view of certain systematists who elevate the 

 Scatopsinae to family rank. So far as my observations go, however, 

 they do afford some justification for that conclusion. 



5. REFERENCES TO LITERATURE. 



(1) BoucHE, P. (1834). Natiinjeschichte cler hiselden, p. 41, Plate III, figs. 10-19. 



(2) De Geer, C. (1776). Memoires des Insectes, T. vr, 160, 36, Plate 28, figs. 1-4. 



(3) DuFOUR, L. (1846). Histoire des metamorphoses du Scathopse tioir Geoffr. 



Ann. Sci. Nat. Ser. 3, 1846, T. vi, pp. 374-382, fig. Compt. rend. 1846, 

 T. xxiii, pp. 1058-1060. 



(4) Malloch, J. R. (1917). A Preliminaiy Classification of Dipteia. Part I. BtdL 



Illinois State Lab. Nat. Hist. Vol. xn, Art. iii, p. 300. 



(5) Melander, A. L. (1916). The dipterous inmily Scnfopsidae. Bull. I'iO. Washing- 



ton Agr. Exper. Station. 



(6) Morris, H. M. (1917). On the larval and pupal stages of Bibio Jokannis L. 



Ann. of Applied Biolor/i/, Vol. iv, 3, pp. 91-114. 



(7) Perris, E. (1847). Notes sur les metamorphoses de la Trichocera annulata Meig. 



et de la Scathopse punctata Meig. pour servir a I'histoire des Tipulaires. Ann. 

 Soc. Enf. Fr. Ser. 2, T. v, pp. 37-49, fig. 



(8) SlfARP. I). (19(19). ('(indin'dge Nalnml Hrlori/. Vol. vr. Insects, Part TI. p. 476. 



DESCRIPTION OF PLATE. 



Fig. 1. Fully grown larva of Sctlopse notata. sp, sjiiracle of first segment; .s/*, spiracle of 



seventh segment; sj), spiracle of eleventh segment, x 20. 

 Fig. 2. Pupa of Scafopse notata, dorsal aspect, ps, prothoracic spiracle; as, first abdominal 



spiracle, x 20. 

 Fig. 3. Pupa of Scalo])se nolala. ventral aspect, av. riglit antenna case; /, leg cases; u\ right 



wing case, x 20. 

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



sp, spiracle of eleventh segment, x .52. 

 Fig. .5. Head of larva, from above, an. left antenna; ltd). labnim; cl. clypeus. x 11.'). 

 Fig. G. Typical seta, x 62."). 



Fig. 7. Small .setae of the type found on segments one and two. x 62"). 

 Fig. 8. Small setae of the type found on other segments, x 625. 



