20 THE CANADIAN ENTOMOLOGIST. 



" borer " in^a^fruit or other tree might be ascertained in the same manner 

 by the use of a tube of wood or tin-plate formed Hke a stethoscope or 

 ear-trumpet ; by applying the wide end to the tree and the small end to 

 the ear, the exact locality of the grub could be determined, when the 

 application of a stout brad-awl or small gimlet would put an end at once 

 to his life and his depredations without material injury to the tree. 



James T. Bell. 



note on chrysomela juncta, c lo-lineata and caryoborus 



arthriticus. 

 Dear Sir, — 



During last Aug. and Sept. Chrysomela junda has been more abundant 

 than I have ever before seen it in this vicinity, and with larvcC was feeding 

 on the leaves of Solamim carolinejise, in company with Chrysomela lO- 

 lineata and larva. The larva of jimcta differs from lo-lineata in being 

 stouter and with the head larger. The color is dirty white. They are 

 readily distinguishable apart. I took in the sexual act a male of juncta 

 and female of lo-lmeata, and Mr. Siewers. of Newport, also observed the 

 two species in intercourse. In the neighboring potato fields were 

 thousands of lo-liiieata, but no juncta. Specimens killed in cyanide and 

 pinned immediately after death all turned black in drying ; to get a few 

 good specimens I flexed the abdomen down, cut an incision along the 

 top and removed the soft parts, put in a amall quantity of arsenic and 

 filled the cavity with cotton — getting as a result bright and beautiful 

 specimens. 



A friend in Fla. writes, saying : " I send a box of seed ot the ' Cab- 

 bage ' tree. I gathered them and put them away, and when I opened the 

 box I found a bug in every seed. What are they ? " The seeds, about 

 I GO, are of the Sabal palmef'.b ; out of the entire lot only two or three 

 did not contain a beetle, Caryoboriis arthriticus Fab. The entire inside 

 portion of the seed being eaten out and the insect filling the cavity, a 

 round cap had been formed — by the larva, perhaps, cutting a ring through 

 to the external skin of the seed on the inside, leaving it so that a push would 

 burst it outward. The cap was in many cases burst off, and in all cases 

 the insect was presented towards the opening tail foremost ; all were 

 dead. Is this one of the uses of the powerful posterior legs of this 

 species, to burst the skin of the seed and thus get out ? 



Chas. Dury, Avondale, Ham. Co., O. 



