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Paxdeletieus hilaris — Herbst. (Gray-sided curculio.) 



According to Dr. Harris, this is a little, pale brown beetle, varie- 

 gated with gray on the sides; its snout is short, broad and slightly 

 furrowed in the middle ; there are three blackish stripes on the 

 thorax, between which are two of a light gray color; the wing covers 

 have a broad stripe of light gray on the outer side, edged with a 

 slender blackish line, and sending two short oblique branches almost 

 across each wing-case ; and the fore legs are much larger than the 

 others. The length of this insect varies from one-eighth to one-fifth of 

 an inch. The larva lives in the trunks of the white oak, on which 

 the beetles may be found about the last of May and the beginning of 

 June. 



LONGIROSTRES. (Long-snout beetles.) 



The species belonging to this section are distinguished by the 

 elongate snout, which is cylindrical and decidedly narrower and 

 longer than the head, and by having the antennae inserted near its 

 tip. The body is generally elongate and almost cylindrical, and cov- 

 ered with a fine dust or powder, usually of a bluish or orange color, 

 which is easily rubbed off. 



Magdalis armicollis — Say. (Elm-tree curculio.) 



[F'g- 17 -1 This species, which is of a reddish 



or rusty color, is about one-fifth of 

 an inch long, and is distinguished 

 chiefly by having small spines at 

 ;the front angles of the thorax. The 

 larvae inhabit the elm, but farther 

 than this nothing, so far as I am 

 aware, is known of its history, but it 

 doubtless is similar in its habits to 

 M. olyra — Herbst — which inhabits 

 the oak, burrowing beneath the bark, 

 where, according to Dr. Packard, it may be found in May in all its 

 stages. The larva of the latter species, which is probably similar to 

 the former, is a footless grub (as are all the larvae of the curculios), 

 with the first three segments somewhat larger than the others. 



Spec. Char. Imago. — Body rufous ; anterior thoracic angles, with 

 small spines. Body reddish or rusty, punctured ; head punctured ; an 

 obsolete impression between the eyes; a dilated, impressed, abbre- 

 viated line over the insertion of the antennae, sometimes obsolete or 

 wanting; thorax with much dilated, confluent punctures; a polished 

 longitudinal line near the middle ; anterior angles with small, erect 

 spines, of which the anterior one is the largest; posterior angles 

 slightly excurved, anterior and lateral margins dull rufous; elytra 

 light rufous, profoundly striated; striae with approximate punctures ; 

 thighs with a robust spine beneath, near the tip. Length from the 

 eyes to the tip of the elytra one-fifth of an inch. 



Thorax, and beneath, excepting the feet, black. Very closely allied 

 to Magdalis barbita (Say), a species which is entirely black, whereas 

 the elytra of the armicollis are always rufous. 



Magdalinus olyra— a, larva ; b, pupa. 



