iM{ KFACK 



W'c liiive fiini|iiled tlio |iit'srnt Lisi of llic Lcpiiloptcra of North 

 AiiiiTioa on tlio jiliin cliuscii liy l>r .loliii li, licContoin his Cutalo^uo 

 of ihf ('oloo|ili'ra |)iihli.slii'il ]>\ the Siiiillisoiiiuu Iii.stitutioii in lS<i;}. 

 Wf .su<:j.'.ost tliiit an unitorinity in tlu' stylv of the LiHts uf tlie differ- 

 ent Subor(h'rs of N'firth Aniorica Inseeta. would be of advuiitaj^e to the 

 Student oi" Natural History and advance tlic diffusion of Kntoiiiolo<.'i- 

 (iil Knowh'ii;,'f. 



It is to he re;rretted that as yet hut very j)artial Collections of Lepi- 

 doptera have been received from California and the Territorien; our 

 acquaintance with tlie Kepidoj>terolo<.'ical Kauniu of these lands is thus 

 at |)resent quite limited. 



The present Number contaius the Sjdiinf,'ida(!. Acfrcriidac. Thyridac 

 /y^raciiidae and liombycidac. The manuscript on tlie Kiittertlies is in 

 course of completion ; that on the rcmainin-^ Families of the Moths 

 awaits the publication of luonoj^rnphic I'apers now kuown to be pre- 

 parinjj; for the press. 



The geofi;raphical area here considered, and styled North America, 

 embraces all that part of the Continent lyinj; North of >Fexico. 



Tbe following marks are used in the List: — after a species indi- 

 cates that it is unknown to the Authors, who are therefore not respon- 

 sible for its value as a distinct species; || signifies that the name has 

 been previ<»usly employed for another s])ecies ; \ denotes erroneous 

 determinations; ^ shows that the name to which it is placed is not 

 entitled to acceptation owing to its not having been accompanied by a 

 description at the time of its use; (J reek letters are cmjjloycd to dis- 

 tinguisli forms which are considered as races of the preceding species. 



AUG. 11. (JHOTK. 



C. T. KOIUNSON. 



New Vokk, October 1st, 1868. 



