Table of Contents. 107 



PAGE. 



with the contained larvje, 150. How the blossoms might be destroyed, 



151 . Killing the larva- just after they have entered the ground by appli- 

 cation of kerosene emulsion, 151. Use of lime or ashes for the same 

 purpose, 151. A united effort of pear growers needed for the control 

 of the pest, 151. 



Clastoptera obtusa, the Obtuse Clastoptera 152 



Its bibliography, 152. Its "cuckoo-spittle" seen on a linden tree, 



152. Nature of the spittle, 152. Its injury in this instance moderate, 

 152. Its rapid development, 153. The insect figured, 153. Usually 

 occurs on the alder, 153. Observed by Dr. Fitch on butternut, 153. 

 Reported by Mr. Van Duzee on the blueberry, 153. It is found over a 

 large portion of the United States, 153. Occurs also in Canada, and 

 southward into Mexico, 153. 



Clastoptera pini, the Pine Clastoptera 153 



Its bibliography, 153-4. Received from pines in Dutchess county, 

 N. Y. , 154. The insect figured and described, 154. Description of the 

 larval stage, 154. Miss Wolsey's observations on the larvae, 154. When 

 the mature insect appears, 155. The pi'esent identification of the larva 

 not a positive one, 155. 



Chauliodes PECTiNicoRNis, the Comb-horned Fish-fly 155 



Synonymy and bibliography of the species, 155 The larva taken 

 from under the ice of a pond in Tiashoke, N. Y., 155. Its rarity, 155. 

 Its literature not extensive, 156. Figures of the larva, Plate 1. Larvaj 

 of Chauliodes nistricornis not uncommon in the south and west, 156. 

 Observed in Ohio by Professor Weed, and figured in its several 

 stages, 156. Professor Riley on Corydalis and Chauliodes, 156. 

 Description of the larva of Chmiliodes pectinicornis and its habits, by 

 Mr. Moody, 157. Its brief pupal stage, 157. The winged insect 

 figured, 158. Its principal features, 158. Some strange movements 

 of C. rastricornis larva, 158. What it feeds upon, 15S. Its distribu- 

 tion in the United States, 158. C serricornis not uncommon in New- 

 York, in June, 159. The winged inse3t figured, 159. Dates of collec- 

 tion of C. pectiniGornis, 159. Its larva not often injurious, 159. 



Corydalis cornuta, the Horned Corydalis 159 



Its bibliography, 159, 160. Prof. Riley's writings on it, 160. Figures 

 of the larva, pupa, and winged insect, Plate 2. Where its eggs and 

 young larva are figured, 160. Error in figuring the eggs, and where cor- 

 rected, 160. References to other writings, 160. Derivation of its 

 specific name, 161. Its place in classification, 161. Habitat of the 

 larvae, 161. Largely used for fish bait, 161. Common names by which 

 known, 161. Its formidable appeai-ance, 161. A double system of 

 respiratory organs, 161. Dr. Norwood on its abundance in Schoharie 

 creek and manner of collecting for bait, 161. A larva eight months 

 in an aquarium without food, 162. Respiration as observed under 

 confinement, 162. Movements of the branchial tufts, 162. Ability to 

 swim in a forward direction as well as backward, 162, 



