THK CANADIAN KNTMMOhiKtIST. 



plant or inserted into the pith. The season for egg-laying must of neces- 

 sity be quite long, as both very youn^ larvae and emerged adults were 

 found on September ,4th and October 6th. Besides these stages, half- 

 grown larvie, mature larvae and pupie were found on both dates. Whether 

 the latest adults to mature live over winter in the galls and do the egg- 

 laying the next year I do not know. It may be that the larvae or pupa*, 

 or both, remain in the galls over winter and mature the succeeding spring ; 

 or the adult beetle^ that emerge in the fall may hibernate in protected 

 places and regain activity in the spring and lay eggs for the succeeding 

 generation. 



A great number of the larva- had been parasitized, as was shown by 

 fie absence of the larva? and the presence of small holes in the galls 

 through which the parasites had emerged. One of these parasites, a 

 Hraconid, was taken alive from a gall. 



.\ fungous disease was also found in several galls. The larvae were in 

 these cases black, and covered with the fungous growth. 



I quote from Say the original description of this species : 



"Hlark, covered with minute, cinereous hairs, thorax impressed 

 Inhabits Central States. Body black, covered with short, minute, robust, 

 recurved hairs, punctured. Anteiinai rufous, club dusky. Thorax a little 

 convex on each side, behind the middle of side rectilinear ; a little con- 

 tracted before, with an indented line above, more profound near the base, 

 with dilated, confluent, slightly impressed punctures, not deeply sinuate 

 at base, with regular series of punctures. KU tra, region of the scutel 

 indented ; abdomen dull fulvous behind ; length nearly seven-twentieths 

 of an inch." 



LeConte, in his Catalogue of Rhyncophora of North .America, makes 

 the follow comment : "This species is said to occur on the Lower 

 Mississippi and in the Atlantic States. I have not identified it, nor was 

 it known to (lyllenhal, who merely cites Say." 



Dr. K. A. Schwarz, who kindly determined my specimens, said : 

 *'Lixus Sylvius, Boh., is a synonym for L. marginatus, Say, and as this 

 synonomy has not been disputed, it shotild stand" 



The nearly-mature larvjw shown in fig. 3 measured y mm. This is 

 the usual length. The pupiv (fig. 4) are a little shorter, measuring about 

 8.5 mm. in length. Arranged in pairs along the posterior margin of each 

 dorsal segment of the abdomen are twelve stout setie pointed with black. 

 The adults (fig. 6) measure from 8 to 8.5 mm. in length. The greate^t 

 width is about 3 mm. 



