40 



The length exclusive of the beak varies from a little less to a full 

 sixth of an inch (3 to 4 nnn ); the width is less than half the length. 



The species is limited in its distribution to the Pacific Coast, and it 

 apparently occurs throughout the States of Oregon and Washington, 

 where, according to Professor Piper, it is very abundant west of the Cas- 

 cade Mountains. The full list of known localities include: Sunnydale, 

 Puyallnp, Tracyton, Vaueouver, Sedro, and Woolley, Wash.; Salem, 

 Hood River, and Corvallis, Oreg. ; Victoria, Kanaimo, and (labriola 

 Islands, British Columbia. 



LIFE HISTORY. 



From the excellent lot of material received from Mr. Kerr a fair 



idea of the insect's life stages may be 

 had. 



The larva, illustrated at b of figure 

 25, departs from the usual curcu- 

 lionid type in being rather larger in 

 the prothoracic portion, in which re- 

 spect it suggests the Bostrychinae. It 

 is, however, legless and less hairy than 

 in that group. It is perfectly white 

 in color and the surface of the body is 

 rather strongly wrinkled. The mouth- 

 parts are small and dark brown at 

 their sutures and tips only, the remain- 

 der of the head being nearly the same 

 color as the body. The length in 

 curved position as figured is 4 mm and 

 the greatest width nearly 2 mm . 



The pupa, figured at c, shows much 

 of the appearance of the future beetle. 

 The head and snout are bent down 

 upon the abdomen between the legs 

 and the tips of the thorax or humeri 



pupa in its ceii; &, exterior of pupal cell; show the serrated points seen in the 



c, empty cell; d parasitic pupa in its cell; b ft ^ { f th wMt ^^ 



e, two empty cells of parasite; /, beetle *- ,v ^ v 



and holes made by beetles in their escape- aS the larva and its length is a little 



all natural size (original). legg than tLat of tbe b eet l e . 



A wild food plant of this weevil was observed by Mr. Schwarz on 

 the occasion of a visit to Oregon in May, 1892. It is a species of 

 thorn, presumably a Crataegus, upon which the beetles were found in 

 the vicinity of Hood River. 



Judging from the condition of the insect at the time of the receipt of 

 sendings it makes its first appearance in a latitude like that of Sunny- 

 dale in the early part of April and continues, according to Professor 

 Piper, till at least the middle of August. 



Soon after the appearance of the insects in April they copulate and 

 lay eggs for the next generation, as previously described. 



Fig. 26.— "Work of Magdalis oenescens 



