wing Itlnfkisli ciMcl'cmis, willi .1 nirdl.m I r,i iis\ crsc lil.ickisli line ricirh' 

 .slr;iifrlil jiikI (jiiitc distiiicl ; iinilci- .surt';icc (if posterior wiiijis irror;iU- willi 

 l)|,icU sf;il«',s, sli.idcd willi reddish, esjieci/dly on tlie coslii, and witli a 

 median transverse distinel iiiaeU line and diseal spot. I'lxj). ^5 , l.ld inclics. 



llaliitat.— Middle States. (Coll. l-jit. Soe. I'liila.) 



On exainininii' tlie ornanienlalion of this species it is seen to lie \(r\' 

 similar to that of .^'. I'lijiidd. wliile Ihr coloratinn is \cr\ dill'erenl. It is 

 a slightly larfrer and more i-o1misI speci<\s, I he renifoi-m spot is relati\'el\' 

 larjuT and nearly eoneoloroiis wilh Ihe orhicnlai-, while the ordinarx s])ots 

 are dissiniiiarly colored in .\'. ciiiiidn. 



Tyvk Locality: Middk- Stales. 



Nt'MHKK AND Skxks or Tvi'Ks: 



Tyi'ds IX : Am. Ent. Soc. Phila. 



Si'KcniKxs Exa.-mixkd: 'Jotal, 18 $, 50 $ ; from, Ottawji. Can.; Meach 

 Lake, Queliee; Hymers, Ontario; Cartwright, Manitoba; IJattlc Creek, 

 .Mieh.; Cohmilnis, Ohio; Oconee, 111.; Lafayette, Ind.; Iowa; Provo, Stock- 

 ton, Deer Creek and ^'inpyard, Utah; Denver, Colo.; Glenwood Springs, 

 Colo.; Prescott, Ariz. ; Plainfield and lirown's Mills, N. J.; New Washing- 

 ton, Xew Brighton and Bethlehem, Pa.; Hudson, Ithaca, and Fhisliing, 

 N. Y. ; Magnolia and Concord, Mass.; Center, N. Y. (Hill); Douglas Co., 

 Knn.sas (Snow); New Mexico (Snow). Also one female, comjiared with 

 ly])e, hy Dr. McDunnough, from Magnolia, Mass. (Thaxter). 



Gi:m;iai.tc Si.ujes: 1, Magnolia, Mass. (Thaxter); 1, New Brighton, 

 Pa.; I, New Washington, Pa.; 1, Brown's Mills, N. J.; 1, Lafayette, Ind.; 

 1, Columbus, Ohio; 1, Provo, L'tah; 2, Glenwood Sjirings, Colo. Total, 9. 



GROUP INSULARIS 



This group contains one species and one form, viz: insularis, 

 Grt., with form confusa, Sm. It differs from the Exsertistigma 

 Group in that the cilia of the antennae are very long and arranged 

 in blocks on the seg-raents. giving an almost fasciculate appearance ; 

 the basal segments presenting a sublamellate appearance when 

 viewed under a strong lens. The setae are not visibly present at 

 the bases of the antennal shafts. 



Dr. Smitli was in error in sinking insularis as a synonym of 

 formalis. Had he had insularis correctly placed, he would probably 

 never have named the confusa form. He did recognize the fact 

 that dark forms of the same species occurred, as proven by the 

 fact that a specimen of Tnorrisonistignia resembling true insularis 

 was- determined by him as confusa for Mr. George Franck. and 

 M'hich eventually readied the Barnes Collection, via the author. 



Confusa is merely a red-brown form of insularis. In general it 

 is more southern in habitat, but is found in Vancouver with the 

 typical form. Other specimens from Vancouver and Manitoba are 

 intermediate. 



The maculation of specimens of this group are spoken of by 

 past workers as if they possessed a most remarkable stability. This 

 is not true. The collar may vary from ashen through brown to 

 black. It may be concolorous throughout or maj^ have black tips 

 and transA'erse markings. The orbicular is usually fiaringly wide 

 open to the costa, but not always so. The claviform is present in 

 all specimens examined, but in some it is very distinctly margined, 

 whereas in others the margining line has almost faded into the 

 ground color. 



106 



