252 Journal New York Entomological Society. fVoi. xxiv. 



was examined without results. The beetles therefore leave the fields 

 in fall and migrate to some sheltered place to pass the winter. The 

 pine needles form a thick mat under the trees where C. marginatus 

 was found very abundantly. 



One cannot help but admire the way in which the transformations 

 of this beetle have been so fitly adjusted to the development of the 

 florescence of the dandelion. The early stages of the beetle and the 

 formation of the flower are synchronous. In order to appreciate this 

 it is necessary to recall the formation of the dandelion bud. It first 

 appears as a minute shapeless bud hidden in a rosette of leaves below 

 the surface of the ground. This bud soon pushes to the surface of 

 the groimd (Plate II, fig. i) and becomes inviting to the beetles, 

 for it is at this time that the adults lay their eggs in the buds. 

 There is a comparatively short period of time in which the female 

 must seek the bud and deposit her eggs. The eggs must be laid in 

 the bud while it is still young. If they are not laid at this early 

 stage the larvae are unable to attain their full growth before the 

 seeds ripen and become dried. Providing the eggs are laid at the 

 proper time the larvae attain their full growth by the time the seeds 

 ripen and the characteristic white floats of the dandelion are formed. 

 As the ripened seeds separate the larvae crawl out and drop to the 

 ground where they burrow into the soil for about an inch and form 

 their cocoons. 



Literature Cited. 



Bargagli, p. Bassegna Biologica Rhincofori Europei, 1883-87. 



Bargagli, p. Bassegna Biologica Rhincofori Europei, Italian Ent. Soc, 

 XVIII, pp. 3-27, 259-307, 1886. 



Bedel, L. Fauna des coleoptera du bassin de la Seine. Ann. Ent. Soc. Fr., 

 VI, pp. 159, 170, 331, 427. 1888. 



Chittenden, F. H. Remarks on the Food Habits of Species of Ceuto- 

 rhynchus. Bui. 23, n. s., p. 50. U. S. D. A. Div. Ent. 1900. 



Kawall, J. H. Coeliodes punctiger Schh. und Olibrus bicolor Fb. Stettin. 

 Ent. Zeit., XXVIII, p. 117-118. 1867. 



Perris, E. Notiz bei Perris. Ann. Ent. Soc. Fr., p. 188. 1876. 



Von Paykull, G. Monographia Curculionum, p. 27. Fn. Sueciae, III, p. 211. 

 1792. 



Blatchley, W. S. and Lend, C. W. Rhynchophora or Weevils of North- 

 eastern America, p. 444. 19 16. 



