rilK CANADIAN KNTOMi )LO(;l!^T. 



lo? 



HACKIIKRRN l'S\ 1,1.11) CIA M.S. 



l;\ I'Kol'. t. \. KII.EV, 



In rciily ici the ijuolions raised 1)\ the Rev/rhomas \\". I'vles un ]). S4 

 <»f the May number, permit me to sa\ : 



1. That to speak of " rm: parasite of Phylloxera -lUistatrix and riiK 

 gall insect ut" the nettle tree." as he does in the heading to liis communi- 

 cation, is inaccurate, since there are many of each. 



2. Besides a numl)er of Cecidomyid galls on Celtis. 1 am acquainted 

 with more than a do/en Psyllid galls upon the i)lant. I'he insects pro" 

 ducing these galls mostl} 

 belong to a new genus 

 which, in a paper that I liave 

 ])repared un the Psyllidre 

 of the L'.S., is called Fachy- 

 psylla. It belongs near 



Diaphoriiia I.oew and Cal- 

 ophya Loew. and is char- 

 acterized by the .-^Ixirt, 

 stout antenui-e. short, ob- 

 tuse frontal cones, convex 

 back, vertical rugoso-punc- 

 tate head and pronotum, 

 and by the wings being 

 parchment-like, twice as 

 long as wide, and having 

 the marginal cells very long 

 and sub-eqtial. ( )nly two 

 of these ha\ e been referred 

 to by name in print (not 

 ])roperly described) so as 

 to be recognizable, chiefly 

 through their galls, viz. : 

 Psylla voiusta O. S. (Stettiner Ent. Zeit. 1861, p. 422) and J\ celt'ulis- 

 iiiaiinna Riley (Johnson's Un. Cyclopedia, 1876, article (Tall-insects). J\ 

 ccltiilis-^randis Riley of the same article being synonymous with 7'<'>iusta. 

 The first-mentioned is a very large insect producing a large swelling of the 



(Iai.i. 01 I' \i m i-sN LLA (.-VENiSTA. — ,1, .^all fuliv foidied ; 

 /', do., forniin;; ; c, do., in section. (After Riley.) 



