BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 133 



1127. EILEY, C. V. Continued. 



The pickle- worm 67 



Characteristics and description of the worm, 67 Its habits, 67 

 Characteristics of the moth, 68 Accounts of injury done by the 

 worm in Missouri and Illinois, 69 ; in other portions of the coun- 

 try, 70 It was not known before as injurious, 70 Eemedy, 70. 



INSECTS INJURIOUS TO THE GRAPE-VINE 71 



The hog-caterpillar of the vine, Ampelophaga myron 71 



The egg, 71 Characteristics of the larva, 71 Its habits when 

 about to transform, 72 The chrysalis and imago, 72 It is one- 

 brooded North and two-brooded farther South, 72 It is very in- 

 jurious, 73 The Microgaster parasite and its development, 73 

 Habits of caterpillar infested with the parasite, 73. 

 The achemon Sphinx, Philampelus achenion J 74 



Appearance and habits of the larva, 74 The chrysalis, 75 The 

 insect is single-brooded, 75 The moth and its issuing from the 

 pupa-shell, 75 No parasites known, 76. 

 The satellite Sphinx, Philampelus pandorus 76 



How to distinguish its larva from that of the foregoing species, 76 

 Development of the larva, 76 Variations in color of the larva, 

 77 Its position when at rest, 77 The moth, 78. 

 The Abbot Sphinx, Thyreus abbotii 78 



Its distribution, 78 The larva varies much in color, 78 The chrys- 

 alis and imago, 79. 

 The blue caterpillars of the vine 79 



The eight-spotted forester, Alypia octomaculata, 80 Larva pre- 

 viously mistaken for it, 80 Habits and characteristics of the 

 larva, 80 Harris's description of the larva, 81 The moth, 81 

 Mr. Andrews's account of its ravages, 81 Remedies, 82. 



The beautiful wood nymph, Eudryas grata, 83 Characteristics of 

 the moth, 83 Close resemblance between the larva of this and 

 the foregoing species, 83 The differences pointed out, 83 De- 

 velopment of the insect, 83. 



The pearl wood nymph, Eudryas unio, 83 It greatly resembles the 

 beautiful wood nymph, 83 Its probable larva, 84 Practical im- 

 portance of distinguishing these closely allied species, 84. 

 The American Procris, Harrisina americana 85 



Work of its larva, 85 Description of full-grown larva, 86 The 

 moth, 86 It is not very destructive, 86 Two annual broods of 

 the insects, 86 Parasite of the American Procris, 87. 

 The new grape-root borer, Prionus laticollis 87 



Correction of opinion formerly expressed, 87. 



The broad-necked Prionus, 87 Duration of the larva state, 87 

 Its transformation, 88 It bores also in apple roots, 88 Great 

 damage done by the borer, 88 No good remedy known, 88. 



The tile-horned Prionus, Prionus imbricornis, 89 How it differs 

 from the foregoing, 89 Its occurrence on prairie land, 90 Small 

 dimorphous male form, 90 The larva subsists also upon the 

 roots of herbaceous plants, 90 Practical considerations, 91. 

 The grape-seed maggot, Isosoma vitis 92 



The grape-seed Curculio larva of the first report is that of a hymen- 

 opterous insect, 92 The perfect insect is closely allied to the 

 joint-worm fly, 92 Mr. Saunders' account and description of the 

 imago, 93. 



