A^IKUICAN LKl'IDOPTERA. 253 



interspaces fonniiifj hands, and these eolors in general alternating, the extreme 

 hase being lighter, and tlie two at the middle of the wing being also lighter, but 

 separated by a black line with a blackish outer shading; the bands beyond mid- 

 dle become a little broader at costa, so that they become finally parallel with 

 outer margin, the suhmarginal one being narrow, forming a distinct denticulate 

 wliite line; other specimens have thorax, abdomen and wings darker, the lighter 

 spaces being gray and the darker grayish black ; there is also some variation in 

 the width of the bands, which, from the extreme base, are nine in number; the 

 veins forming the discal cell are somewhat emphasized by blackish, which is 

 more prominent on the median. Hind wings with lines corresponding to the 

 fore wings, but less distinct, becoming obsolete towards base, and with interspaces 

 more uniform light fuscous, except that the lines have a dark outer shading. 



Female varying in colors of thorax and abdomen from light gray to dark fus- 

 cous, the thorax being the darker, at times almost blackish, and the abdomen 

 .sometimes annulate with gray. Wings gray, with a deep black band beyond 

 middle. 



Described from four males ami five females, one pair sent by Prof. 

 Fletcher, the rest from Mr. W. H. Danby, all of these taken by 

 Mr. Danby at Victoria, Brit. Col., from early in November to about 

 middle of December. The females seem to vary considerably in 

 size, some being hardly larger than the $ of Raehela bruceata, while 

 others are almost as large as the 9 of Erannis tiliaria. The spe- 

 cific name is given in honor of its discoverer, Mr. Danby. 



7 RACHEL A n. gen. 

 Type bruceata Hulst. 



Palpi small, slender; tongue wanting; clypeus rather broad, 

 .scaled ; antennse % even, each segment with two fiiscicles of hairs 

 on each side ; thorax and abdomen untufted ; hind tibias with two 

 })airs of spurs; antennie of 9 filiform, very slightly pubescent; 

 thorax and abdomen of 9 closely joined, soniev;hat vermiform ; 

 fore wings % broad, even, 12 veined, la and lb present, strong, 8 

 widely se])arate from 4, 5 nearer 4 than 6, 6 long stemmed with 7, 

 10 on 1 1 anastomosing with 9 forming a long accessory cell, 11 from 

 cell, 12 fi'ee ; hind wings 8 veins, Id and 16 present, strong, 3 and 

 4 widely sei)arate, (5 and 7 long stemmed, 8 anastomosing with cell 

 to beyond middle; wings of % almost entirely lacking. 



Name given in honor of Mrs. Rachel Bruce, whose husband, Mr. 

 David Bruce, han done .<() much towards a knowledge of the Lepid- 

 <>l)tera of the central Rocky Mountain region, and to whom I am 

 indebted for many favors. 



Species. — R. brnceata Hulst. 



R. hj/perborea Hulst, n. sp. 



R. occidenfa/l.s Hulst, n. sp. 



R. latipeunl^ HuLst, n. sp. 



TRANS. AM. KNT. SOC. XXIII. . JULY, IMHf). 



