BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1301. Riley, C. V.—Continued. 
work in the fruit can be distinguished from that of other insects, 
33—It is very injurious in Southern Illiuois and parts of Mis¬ 
souri, 33—It is less injurious to apples than the plum Curculio, 
33—Injury done by it to pears, 33—The rot in apples principally 
produced by it and by the plum Curculio, 34—Season of its ap¬ 
pearance, 34—Remedies and preventive measures, 34—Descrip¬ 
tion of larva and pupa, 35. 
The quince Curculio, Conotrachelus cratcegi . 
Its food-plants, 35—It is very injurious to the quince in the East, 
36—Dr. Trimble’s account of the damage done by it, 36—How 
the beetle differs from the two preceding Curculios, 36—Its trans¬ 
formations and habits, 37—Its puncture on the fruit, 37—It hiber¬ 
nates in the larva state, 37—Its larva mistaken by Dr. Fitch for 
that of the plum Curculio, 38—The imago state lasts only two 
months, 38—It does not attack the apple, 38—Remedies, 38—De¬ 
scription of the larva and pupa, 39. 
The plum-gouger, Coccotorus scutellaris . 
How it dilfers from the preceding species, 39—Injury caused by it, 
39— Food-plants, 40—It is often mistaken for the plum Curculio, 
40— Season of its appearance, 40—Hides bored by it in the fruit, 
41— The larva lives within the kernel of the fruit, 41—Remedies, 41 
The strawberry crown-borer, Tyloderma fragarice . 
Distribution of the insect, 42—Injury done by it, 42—Habits and 
characters of the larva, 43—Habits of the beetle, 43—Remedies, 
43—Parasite, 44—How the larva differs from that of the grape¬ 
vine Colaspis, 44—Description of the imago and larva, 44. 
The pea-weevil, Bruchus pisi . 
Insect enemies of the garden-pea, 44—Characters of the Bruchidce, 
45—Habits of other species of Bruchidce, 45—Frequent occurrence 
of its larva in green peas, 45—Characteristics of the beetle, 46— 
It is in all probability an indigenous North American insect, 46— 
The beetle does not sting the peas, 46—The eggs are fastened by 
the female beetle on the outside of the pod, 47—The larva and 
its habits, 47—Its transformations, 47—Remedies and prevent¬ 
ives, 48—Examination of peas intended for seed, 48—Concerted 
action necessary to exterminate the insect, 48—Mr. Saunders’s ac¬ 
count of the occurrence of the pea-weevil in Canada, 49—Other 
preventive measures, 49—Birds destroying the insect, 50. 
The grain Bruchus, Bruchus granarius . 
Its introduction from Europe, 50—How it dilfers from the pea- 
weevil, 50—Curtis’s account of its habits in Europe, 51. 
The American bean-weevil, Bruchus fabie . 
Food-plants, 52—Its geographical distribution, 52—Accounts of 
damage done by it in New York and Pennsylvania, 52—It has 
only lately become injurious, 53 : —Habits of the larva and beetle, 
54—The proper nomenclature of the species, 54—Description of 
the imago, 55—Its differences from allied species, 55—Note on 
descriptions based upon individual variations, 56. 
The New York weevil, Ithycerus noveboracensis . 
Damage caused by it to fruit trees, 57—Former descriptions of the 
insect, 57—Its breeding habits, 57—The pear blight not caused 
by the beetle, 58. 
The imbricated snout-beetle, Epiccerus imbricaius . 
Injury done by it to vegetation, 58—Its natural history still un¬ 
known, 58—General appearance of the beetle, 58. 
