i.iMrh'.i /.\M runs r,,nn coxri s.i. s\u. 



J887. Sin. I'roc. W S. N. M., X, l".l'. .\ <ir<'lis. 



IS.'Xi. S 11.. I'.iill. r. S. N. M., WWIIl. ;<?. h'li;iiirli,i,,rolis. 



i.s)i;{. Sill., r.iiii. r. s. \. m.. m.iw .-)7. i:ii,/Nrh,,',irn/i,'. 



l.S!)i. C;.rt., ('.111. ImiI., \\\I, si ninrris<>i,lsl lonm (.l<irn/is). 



KS!)5. C;rl.. \Mi. N.il. \Cr,. I'.rcnicii, \l\'. IS, . I ,i r>>i is (L<ini/ini). 



lito:}. ll.ini)... C.il. I. (111. I'h.il. I'.. M., I\\ dUl'. |.l. LXWII. f. 2, T ri ph<ir„<,. 



I!)()S. Sim., Cin. ImiI., \I„ •_'-_'I. Ulniii,-li,ni ml is. 



\. COXl'TSA Sniilh, s|i. iiov. 



Hriiiiit rc(l-iH-('\vn; co.sl.-i .ind coli.-ir Iiio.mIIs pjilc yellow; cell before 

 ,111(1 lictwccii tlic (ii-(liii;ir\ spoLs Muck; (ir(lin;iiy .spot.s eoncolorous, nar- 

 rowly ;iiiMul,ilc w illi ]);ilc yellow: chnitoiiii outlined ii. .same way. T. a. 

 line {li.stinci, not cro.s.siiin- co.stal )ia!c .space, but iueiirved to base; I.]), line 

 ]iunetit'orni, indi.st iiui. uciiiinate, included .space paler; ,s.t. line pale yellow, 

 narrow, powdery, enipiia.siy.ed by the .soinewliat darker brown .s.t. space, 

 secondaries fuscous. ^ irenetalia essenlialiy as in crciiulalii. ]'/Xpands l..") 

 inciies (.^S-.'j;)""") . 



I labital. — Wasbington Territory. 



Tliis is tbe form labeled ei-serliKtigma by Mr. Grote in collection Graef 

 and Xeiimouen, and Mr. Tepper also bad a specimen associated witli 

 hiiioniiiKilis under tbe same title. The superficial resemblance between 

 I'inotiiintilis and confusci is very close, but tbe species are vindoubtedly dis- 

 tinct. 'I'be black collar of biiiovihuijis is distinctive and the ditl^'erence in 

 tlic genitalia is strongly marked. Four specimens of $ and 2 from 

 Messrs. Graef, Tepper, and Xeiimoegen examined. 



Typk Locality: Washington. 



N't':N[BER AXi) Skxks of Types: 4 specimens of $ and 9- 



Tvi'Es in: Tepper Collection. 



Specimens Examined: Total, 26; from, Duncans, ^'anc. ; \'ictoria, B. 

 C; Ka.slo, B. C; Arrowhead Lake, B. C. ; Ft. Klamath, Ore.; Seattle, 

 Wash.; Plumas Co., Calif. One specimen compared with the type in the 

 Tepper Collection, by Dr. 3IcDunnough, from Plumas Co., Calif. 



Gen ITALIC Slikes: 1, Seattle, Wash. 



GROUP EXERTISTIGMA 



This is a very lieterogeneous group; similar in tliis respect to 

 " placJda." It is distinguished by it.s thoracic crest, cliitenous 

 clasper. and finely ciliated antennae in the male. Single specimens 

 picked here and there throughout a series differ va.stly in looks 

 and markings. It is the author's opinion that there are no really 

 valid species in the lot. The "lumper" is privileged to call them 

 all one — the "splitter" to divide into species to his heart's content. 

 There appear to be no good structural characters on which to base 

 determinations. The antennae of ciipidissima is nearest to that of 

 insidaris, but there seems a very gradual gradation down the series 

 to the smaller forms, such as niger. To all practical purposes the 

 genitalia are identical, with considerable variation to the ends 

 of the valves, tlie tips of the clasper, and the vinculum. Some of 

 the forms are so strikingly unlike in superficial appearance that it 

 seemed impossible to place them together. A long series of most 

 of the forms shows a gradual gradation to the nearest allied forms 

 in all directions. Previous workers have used purely superficial 



108 



