December, 1872 ] 



145 



NOTES ON TWO NEW GENEEA OF FSOCIDJE. 

 BY BARON E. de SELYS-LONGCHAMPS. 



Last year, in preparing for the ' Societe entomologique de Bel- 

 giqne ' a revision of the ' Psocides ' described by E-ambur (a paper not 

 yet pxiblislied), I noticed two genera (or sub-genera) Avhicb were not 

 included among the twenty-one genera characterized by Dr. Hagen in 

 his ' Psocinorum Synopsis synonymica ' in 1866. I communicated 

 the types of these to my friend, Mr. McLachlan, not having absolute 

 confidence in my own eyes concerning the existence, or non-existence, 

 of the third tarsal joint in some Psocides. He agreed mth my opinion, 

 and, in an article published in the ' Entom. Monthly Magazine ' for 

 September last, he notices (Notes 3 and 4, p. 77) the two new forms 

 which I had sent to him, but, from motives of delicacy, refrained from 

 giving them names. However, the few words he gave suffice to estab- 

 lish their diagnosis. It remains then to make known the names which 

 I assign to these new forms, and to give drawings of the neuration of 

 the wings ; for, as Mr. McLachlan has said, it is very desirable that 

 such drawings should be published, because we know by experience 

 how difficult it is for a student, commencing his studies of the JPsocidce, 

 to follow descriptions of the peculiarities presented by neuration, 

 without the aid of figures. 



PSTLLIPSOCUS, n. g. 



Alarum anticarum characteres fere ut in Ccecilio EJipscocoqiie ; 



sed vena furcata 

 ramulam (" a " in 

 Jig.), cellidam mar- 

 ' Ji ginalem super- 

 additam, cellulce 

 elJipficali ad mar- 

 ginem interiorem 

 basin propius con- 

 juncfam forman- 

 tem, ante furcam 

 primariam inferne 

 emittit. Tarsi, ut 



A. Fore-w-ing of Hemipsocus; 1, 2, 3, the marginal cells. in JEHpscoCO, tri- 



B. Fore-wing of rsijllixisoms; a.thcadditioniUbrancb of the vena furcat;i. articuhlti 



