BIBLIOGRAPHY. 
Noyes, Alice Ayr. 1915. The Proventriculus of a Hydropsyche larva. 
Jour. Ent. & Zool. VII, pp. 34-44. 
SHeELForD, Victor E. 1913. Animal Communities in Temperate America 
as illustrated in the Chicago Region. Geog. Soc. Chicago Bull. V. 
(Numerous brief references). 
Simpson, C. B. 1903. The Log-Cabin Builder (Limnephilus indivisus 
Walk.). Proc. Ent. Soc. Wash. V. pp. 98-100. 
Simpson, C. B. 1903. Photographing nets of Hydropsyche. Proc. Ent. 
Soc. Wash. V. pp. 93-94. 
Stetcut, Charles E. Relations of Trichoptera to their Environment. 
Jour. N. Y. Ent. Soc. XXI. pp. 4-8. 
Vorutrs, C. T. 1905. Habits and Anatomy of the Larva of the Caddis- 
fly. Platyphylax designatus Walker. Trans. Wisc. Acad. Sci. Arts. 
Letters. XV. pp. 108-123. 
Vorutes, C. T. 1908. The development of the nuclei of the spinning gland 
cells of Platyphylax designatus Walker. Biol. Bull. XV. pp. 54-62. 
Vorutrs, C. T. 1909. Studies of the Trichoptera of Wisconsin. Trans. 
Wisc. Acad. Sci. Arts. Letters. XVI. pp. 647-738. 
Vorutres, C. T. 1913. Trichoptera collected under unusual conditions. 
Ent. News. XXIV. p. 84. 
Specific descriptions of the following North American larve 
have appeared in previous publications. (*) Indicates species also 
described in the present work. 
SPECIES. AUTHOR. SPECIES. AUTHOR. 
Astenophylax = Lloyd. Hydropsyche Vorhies. 
argus* 19gtse. p. 57- alternans 1909. p. 707. 
Brachycentrus Lloyd. Ithytrichia Lloyd. 
nigrisoma* 1oisa. p. 81. confusa 1g15d. p. 117. 
Murphy. 
1919. p. 154. Lepidostoma Vorhies. 
wisconsinensis 1915. p. 685. 
Chilostigma Lloyd. 
difficilis* I9I5b. p. 208. Leptocella Vorhies. 
uwarowii IQI5. p. 605. 
Ganonema Lloyd. 
nigrum —* IgIsc. p. 17. Leptocerus Vorhies. 
(americanum ?) ancylys* IQI5. p. 691. 
Grammataulius Hill-Griffin. Leptocerus Vorhies. 
bettenii 19i2. p. 18. dilutus I9I5. p. 688. 
Helicopsyche Vorhies. Leptocerus Vorhies. 
borealis* 1909. p. 681. tarsi-punctatus I9I5. p. 604. 
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