456 NORTH AMERICAN NOCTUID^. 



line. Beneath white, primaries rather densely, secondaries sparsely 

 powdered with black scales. Head and collar iuferiorly, paler; thorax 

 concoloroiis with luiinaries. Expands 1.45-1.50 inches (36-38™'"). 



Habitat. — California, Colorado, Nevada. 



This species is remarkable for its pkimp form and somewhat retracted 

 head ; the abdomen, too, is short, and that gives the insect an unusu- 

 ally robust appearance. The w^hite secondaries ally it with rccula, cica- 

 tricosa, Ade^itata, and niveilinea^ from all of which it is abundantly dis- 

 tinct. Types S and 9 in collections A. W. P. Cramer and B. Xeumoe- 

 gen. 



A. flavicollis Smith, sp. nov. 



Structural details as in Jlavidens. Primaries rather dark red brown 

 s. t. space somewhat paler; costa to t. p. line and a broad line through 

 submedian space, yellow ; median vein white. Two sagittate pale dashes 

 crossing s. t. space and indenting the s. t. line on veins 3 and 4. T. a. 

 line geminate, black ; included space concolorous; not crossing the pale 

 costal space and evenly outwardly curved between veins. T. p. line 

 lunulate, parallel with outer margin. S. t. line pale, distinct, even ; pre- 

 ceded by evident, black sagittate marks. Terminal space powdered 

 with black. A black spot at base. Claviform somewhat darker, mod- 

 erate in size, distinctly outlined in black. Ordinary spots pale, yellow- 

 ish, powdered with white. Orbicular round, reniform kidney-shaped. 

 Secondaries smoky fuscous. Beneath, fuscous, powdery. Thorax con- 

 colorous, collar inferiorly yellow. Expands 1.25 inches (32"^"^). 



Habitat. — Montana. 



One 9 specimen from Mr. Tepper's collection. A well-marked form, 

 I>eculiar by the yellow collar and in addition by the obtuse primaries, 

 and rather unusually ample secondaries. Possibly, when the S is dis- 

 covered it may prove not referable to this group, with which, however, 

 the ornamentation would seem to place it. 



A. obesula Smith, sp. uov. 



Structural characters as in the species of the 4-dentata group. Pri- 

 maries rather dark luteous gray, irregularly mottled with darker fuscous 

 points and short lines. Ordinary spots very indefinite, dusky fuscous ; 

 a fuscous patch indicating the punctiform s. t. line. Transverse lines 

 distinct, punctiform, internii)ted. Basal line distinct, geminate ; t. a. 

 line upright, curved between veins. T. p. line crenulate, parallel with 

 outer margin. S. t. line punctiform, even, fuscous. Terminal space more 

 densely irrorate with dark atoms. Secondaries white. Beneath, white, 

 powdery; disc of laimaries darker; a common dark extra discal line, 

 crossing primaries but not extending beyond middle of secondaries. 

 Expands 1.5 inch (38"""). 



Habitat. — Montana. 



The 6 antennae are unusually thick, the body robust, head broady 

 primaries obtuse. As a whole this species is the most plump of the 



