STOMYLES— AMBLYSCIRTES. 503 



as well as for a single female from Sonora ; Mr. Edwards received his specimens from 

 Arizona from the same collector. It resembles S. comus, but is a good deal larger, the 

 terminal joint of the palpi is longer, and the lower oblique row of spots on the primaries 

 is much more distinct. For the genitalia of the male, see Tab. XCV. fig. 30. 



AMBLYSCIRTES. 



Amblyscirtes, Scudder, Rep. Peabody Ac. Sci. iv. p. 75 (1872) ; Butt. E. U. S. & Canada, ii. p. 1575 

 (1889); Watson, P. Z. S. 1893, p. 80 (part.). 



The type of Amblyscirtes is A. vialis (Edw.), and it includes various other North- 

 American forms, as well as several from Mexico. In A. vialis and A. cenus (Edw.) the 

 lower radial nervure of the primaries is straight (the discoceilulars being equal in 

 length), whereas in some of the other species (A. nanno &c.) it is slightly depressed at 

 the base. The primaries of the male have a faint, oblique, interrupted brand, this 

 being quite rudimentary in A. vialis * and more or less distinct in the other species. 

 The terminal joint of the palpi is moderately long in A. vialis and others, and short 

 in A. nanno, A. folia, &c. The genitalia of the males of all the species dissected are 

 very similar in structure, and we therefore place these insects under the one genus, 

 Amblyscirtes. 



The antennae are less than half the length of the costa, and have a stout club, 

 terminating in a short crook. The third joint of the palpi is moderately long and 

 erect (A. vialis &c), or short and conical {A. nanno &c). The primaries are blunt at 

 the tip ; the cell is considerably less than two-thirds the length of the costa ; the 

 discoceilulars are oblique, the lower one sometimes a little shorter than the upper ; 

 the lower radial is not or only slightly depressed at the base ; the first branch arises 

 a little before the middle of the median nervure, the second close to the lower angle of 

 the cell. The secondaries are rounded at the anal angle ; the discoceilulars are faint. 

 The body is moderately stout. The middle tibia? are spined, the hind tibiae have two 

 pairs of spurs. The primaries of the male have a narrow, oblique, interrupted brand, 

 extending from the base of the second median branch to below the first; in A. folia 

 and A. elissa it is continued in the direction of the submedian nervure by an isolated 

 additional piece. 



The species, so far as we know at present, are confined to Mexico and the United 

 States, but we have females of an insect from Brazil which may belong here. All of 

 them have the cilia more or less spotted. Notwithstanding the very different form 

 of the antennae, Watson placed this genus next to Butleria, with which it has little 

 affinity. 



* It disappears entirely in this insect when the larger scales are removed. 



3t2 



