OF WASHINGTON. 317 



terminal dark patch usually broadens toward the apex and is sharply cut 

 off on the costa at about the outer fourth of the wing. Secondaries 

 pale yellowish, darkest at apex; fringes concolorous. Undersurfaces 

 with the dark markings of the primaries less sharply defined. Abdomen, 

 brownish above, the male claspers (Fig. 19, , c), yellowish-brown, almost 

 bare, quite slender, and gradually narrowing toward the tip, which is 

 almost acute; each arm is provided with 5 or 6 very small, cylindrical, 

 acute teeth at the posterior edge; basal lobes are almost circular and 

 concave at the inner side; upper basal plate triangular. Anal segment of 

 the female obliquely truncate from above, but slightly so beneath, the ovi 

 positor stout, yellowish-brown, its terminal part slender, compressed lat 

 erally, the upper edge of the apex being finely and acutely serrate. 

 (Fig. 5, d, e.) 



Described from four males and seven females, no two of which 

 are exactly alike in the marginal details of the inverse Y-shaped 

 band nor in those of the terminal patch. 



Specimens of both sexes of this species were reared from parts 

 of a pod of an unknown species of Yucca (but doubtless . 

 baccata) received from Mr. D. C. Chapman, of Washington, D. 

 C., who had obtained them in May, 1883, from New Mexico, the 

 moths issuing during May of the following year. The larvas 

 infest the fleshy portions of the pod and produce hard, gall-like 

 swellings. The cocoon, which, as with the other species, is 

 constructed within the burrow, is pale brownish, and resembles 

 an elongate, cylindrical bag, rounded at the base and cylindrical 

 at the apex. When ready to transform, the larva retires to the 

 lower third of the bag and separates it from the upper two-thirds 

 by a dense, tough, delicate whitish, layer of silk, thus dividing 

 the cocoon into two unequal chambers. No larvas were pre 

 served, but those which were noticed in cutting open the swell 

 ings showed a remarkable resemblance to those of decipiens. 

 The chrysalis also has not been studied. 



Prodoxus reticulatus, n. sp. IMAGO. 9- Expanse, 10-11 mm. (Fig. 

 20). General color, white. Body with whitish hairs, those of the head 

 inclining to yellowish, intermixed with a few darker hairs, especially 



Fig. 20. Prodoxus reticulatus; female with wings expanded hair-line 

 showing natural size. 



