170 BIBLIOGRAPHY OP ECONOMIC ENTOMOLOGY. 



1329. RILEY, C. V. Continued. 



Ox A NEW GENTS IN* THE LEPIDOPTEROUS FAMILY TIXEID.E WITH RE- 

 MARKS ox THE FERTILIZATION OP YUCCA, Pronuba \iuccasella 150 



Generic characters of Pronuba, 150 Description of Pronuba yuc- 

 casella, 151 Plants requiring the aid of insects for fertilization, 

 152 Fertilization of orchids, 152 Fructification of Yucca, 153 

 Yuccas must rely on insects for fertilization, 153 Insects fre- 

 quenting Yuccas, 154 Diurnal and nocturnal habits of Pronuba, 

 154 How the female moth fertilizes the plant, 154 Oviposition, 

 155 The larva within the young fruit, 155 Description of the 

 larva, 155 Only a small percentage of fruit not infested by the 

 larva, 156 The larva leaves the capsule and enters the ground 

 for hibernation, 156 Mutual adaptation of plant and insect, 

 156 The moth doubtless occurs wherever Yuccas grow wild, 

 157 Easy transportation of the cocoon, 158 Further facts re- 

 garding the fructification of Yucca filamentosa and gloriosa, 158 

 Yuccas seeding in Europe, 159 Range of the insect, 159 Mr. 

 Stainton's opinion on the characters on the Yucca moth, 160. 



NOTE. Pages 1-44 were also printed as a separate, with title-page cover. 

 "< Jefferson City, Mo., 1873. S.-b. No. 19, pp. 150-173. 



1330. RILEY, C. V. New York without a State entomologist. <Moore's 



Rural New Yorker, 5 May, 1873. S.-b. No. 8, p. 103. 



Needs of a State entomologist for New York ; Salix humilis infested with 

 larva of Plectrodera scalator. 



1331. RLLEY, C. V. Tent-caterpillar of the forest. <N. Y. Tribune, 



23 May, 1873. S.-b. No. S, pp. 64-65. 



Answer to inquiry of S. T. Gilbert; means against eggs of Clisiocampa syl- 

 vatica [= dis<rto]. 



1332. RLLEY, C. V. Apple-tree borer. <N. Y. Tribune, 23 May, 1873, 



S. b. No. 8, p. 64. 

 Answer to inquiry of J. Durbin ; means against Saperda bivittata [= Candida], 



1333. RLLEY, C. V. Punctured grape-canes. <N. Y. Tribune, 23 May, 



1873. S.-b. No. 8, p. 64. 



Answer to inquiry of E. Snyder: food-habits and means against (Ecantlius 

 niveus. 



1334. RILEY, C. V. The codling-moth. Weir's trap. <Amer. Agric.. 



May, 1873, v. 32, p. 184, figs. 



Unsatisfactory results of experiments with the Weir trap ; relative value of 

 materials used; criticism of J. S. Parker's theory for the. extermination of 

 Carpocapsa pomonella ; this species breeds in apples, wild crabs, pears, 

 peaches, and plums; figures females and the abdomen of the males of Pimpla 

 annulipes and Macrocentrus delicatus parasitic upon the apple-worm. 



1335. RILEY, C. V. Influence of extreme cold on the Curculio. har- 



dener's Mo. and Hortic., May, 1873, v. 15, pp. 137-139. 



Critical review of T. T. Southwick's article of same title ; extract from 3d 

 Ann. Rept. State Eut. Mo. 



