168 



a single white basal tuft. Primaries: ground color shining white; basal line 

 indicated by a small black mark on costa ; t. a. line indicated by a small black 

 mark on costa and a narrow black waved line from submedian fold to inner 

 margin; t. p. line indicated by a small black mark on costa, a black dot just 

 below vein 2, and a thin incurved black line from submedian fold to the inner 

 margin ; all other maculation obsolete ; fringe white. Secondaries : black, whit- 

 ish toward the extreme bases ; fringe white with a fuscous basal line. Be- 

 neath : in general, black ; the primary white along inner margin, its fringe 

 white with a fuscous basal line; caudo-mesial half of the secondary white, 

 fringe as on primary. 



Expanse: 33-36 mm. 



A specimen was submitted to Mr. Schaus on the chance that the 

 species might have been described from Mexico ; but it was unknown 

 to him. 



Type locality: Baboquivari Mts., Pima Co., Ariz. (O. C. Poling). 



Number and sexes of types: Holotype $, 15-30 Aug.; Allotype 9, 15-30 

 Aug.; 12 $ Paratypes, 15-30 Aug. (7), 1-15 Sept. (5) ; 7 $ Paratypes, 15-30 

 Aug. (5), 1-15 Sept. (2); all 1923. 



Bellura Walker. 



Type B. gortynoides Wlk. 



1865, Wlk., C. B. M., XXXII 465, gortynoides sole species and therefore 

 type. 



Arsama Walker. 



Type A. densa Wlk. 



1865, Wlk., C. B. M., XXXII, 465, gortynoides sole species and therefore 

 type. 



Sphida Grote. 



Type S. ohliquata Grote. 



1879, Grt., Bull. U. S. Geol. Surv. Terr., IV, 179, ohliquata sole species 

 and therefore type. 



Arzamopsis Dyar. 



Type A. diffusa Grote. 



1922, Dyar, Ins. Insc. Menst., X, 50, diffusa designated type. 



Judging from specimens compared with types, Dr. Dyar has ob- 

 viously misidentified gortynoides, which is a species close to, and pos- 

 sibly synonymous with melanopyga; with the result that Arzamopsis 

 is a synonym of Bellura. 



Apparently the frontal tubercle on the clypeus is usually absent 

 in diffusa; and usually present, strong, in obliqua. In densa and 



