1887.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 457 



muraemda group to which it belongs. A single $ specimen in good 

 condition from Rev. George D. Hulst. Others since seen agree ; 1 

 specimen in tbe Museum collection. 



A. sponsa Smitli, sp. nov. 



Anterior tibia spinose; tip armed with four longer stout spines. 

 Front with an ovate protuberance depressed in the center. Thorax 

 with indefinite fore and ait tufts. Primaries proportionately sbort, 

 stumpy. Apices rectangular. Head, thorax, and primaries uniform 

 dark ash gray. The ordinary maculation obsolete, and only a faint 

 trace of the geminate transverse lines visible. Collar with a black line. 

 Secondaries fuscous. Beneath 'dark gray, powdery, with dusky discal 

 spots, and exterior common line. Expands 1.25 inahes (38'°™). 



Habitat. — Washington Territory. 



A small species closely allied to bicolJarles, and with it belonging to 

 the pitychrous group. Mr. Grote's association of bicollaris with ctipida 

 and allies is misleading and unwarranted. Of the present species I 

 know the 2 only. The S will probably have serrate and bristled antenna 

 and bifurcate clasper. One 2 specimen collection U. S. Nat. Mus. 



A. finis Smith, sp. nov. 



Structural characters as in the species described in the Edentata 

 group. Primaries sordid brownish fuscous, a more distinctly crimson 

 brown shade in sub-basal and s. t. space. Transverse lines geminate, 

 variably distinct, but evident in all observed specimens. T. a. line ob- 

 lique, outwardly curved between veins ; t. p. line even, slightly crenu- 

 late, parallel with outer margin. S. t. line pale, narrow, very slightly 

 an<l irregularly siuaate. Claviform coucolorous, short, evidently out- 

 lined. Ordinary spots rather large; orbicular round, reddish gray 

 powdery ; reniform of normal form, narrowly annulate with yellow, 

 the latter color somewhat encroaching in the middle, outwardly. Sec- 

 ondaries dull yellowish fuscous, paler toward base, the veins and a discal 

 lunule dusky. Beneath ])Owdery, more perceptibly so toward apices j 

 an exterior distinct dusky line and dusky discal spot. Head and tho- 

 rax concolorous ; collar with a transverse brown line, the pategise at 

 base tipped with ferruginous. Expands 1.35 inches (34™°'). 



Habitat.— yiontduii, " Black Hills." 



The species is narrow winged, the apices of primaries rather obtuse. 

 In the arrangement of species for convenience of determination this 

 species comes into the group pitychrous, with pastoraUs as its nearest 

 ally, but probably it will be found eventually that the species is closer 

 to tessellata than to the forms with which it is associated. Two speci- 

 mens from collection U. S. Xat. Mus. and George D. Hulst. 



A. luteola Smith, sp. uov. 



Structural characters as in tetrica and serrlcornis. Primaries lute- 

 ous, with a reddish shade, somewhat irrorate with black. A darker 

 shading to outer portion of mediau space; entire terminal space dark. 



