AQUATIC INSECTS IN NEW YORK STATE 337 



The pupae are incased in cocoons which are firmly fixed to 

 the rocks, these cocoons sometimes occurring in dense masses, 

 forming a carpetlike covering on the rocks; in other species they 

 occur separately or in small groups. The pupae, like the larvae, 

 breathe by tracheal gills; but in this stage the gills are borne 

 by the prothorax. The adult fly, on emerging from the pupa 

 skin, rises to the surface of the water and takes flight at once. 

 Soon after this the eggs are laid. 



Bibliography of the biology of the Simuliidae 



Barnard, W. S. The Black Fly in Ithaca N. Y. Am. Ent. 1880. 3:191 

 Brauer, F. S. o r n a t a. Die Zweifliigler des Kais. Museums zu Wien, 



1883 

 Comstock, J. H. Manual for the Study of Insects. 1895. p.451-53 

 Eichhorn. Naturges. d. Kleinsten Wasserthiere. Danzig. 1774. Tab.7 

 Tabricius, O. Tipula sericea. Beschr. d. Atlas Mueclie u. ihrer 



Puppe. Schr. d. Berl. Ges. naturf. Fr. 1784. 5:254-59 

 Fries. 01>s. entomol. Pars I. Monogr. Simuliarum Sveciae. 1824 

 Garman, H. A Silk-spinning Cave Larva. Science. 22-23:215-17 

 Graber. Die Insecten. Th. 2, 2:516 

 Hagen, H. S i m u 1 i u m sp. Ent. Monthly Mag. 19:254-55 



S. p i c t i p e s. Bost. Sec. Nat. Hist. Proc. 1879. 20:305-7 



■ On Simulium. Canadian Ent. 1882. p.50-151 



Heeger. Beitr. zur. Naturgesch. der Kerfe. etc. Isis. 1848. p.328. Tab.4 

 Horvatb. Le moucheron de Columbateh. Rovart. Lapok. 1 Bind. p.l95- 



204 

 Ho-ward, L. 0. Note on Simulium Common at Ithaca N. Y. Insect Life.- 



1888. 1:99-101 

 Kellogg, V. Ii. Food of Larvae of Simuliidae and Blepharoceridae. Psyche. 



Feb. 1901 

 Koelliker. Obs. d. prima insectorum genesi, adjecta articulatorum evolu- 



tionis cum vertebratorum comparatione, p.ll. Tab.2 

 KoUar. Ueber die Entstehung der OoUumbatzer Muecken. Sitz. ber. d. k, 



Akad. d. Wiss. z. Wien. 1848. p.1-16 

 Lugger, O. S. t r i b u 1 a t u m. (=S. v i 1 1 a t u m Zett.) Univ. Minn. 



Agric. Exp. Sta. Bui. 48. 1896. p.205-7, fig. 147^9 

 McBride, Sara J. The so called WebTvorm of Young Trout. Am. E.it. 



2:365 

 Bteigem, J. Syst. Beschr. 1818 and 1830. v.l and v.6 (p.309) 

 Meinert, Fr. De eucephale Myggelarver. 1886. p.90-96 



S. fuscipes og rep tans Trophi. Dipterorumu p.41-43. 



Taf.l 



Metschnikow. Embr. Studien an Insecten. Zeit. f. wiss. Zool. 16:4^18. 



Tab.23 

 Needham, J. G. Simulium Society. N. Y.- State Mus. Bui. 47:407-8, 



1901. With plate 15 

 Osbom, H. Insects affecting Domestic Animals. U. S. Dep't Agric. Div. 



