392 



on costa of first lobe and some whitish over-scaling before the discal dash. 

 Inner margin of first lobe with a faint dot before apex and outer margin of 

 second sometimes with two. That on the first lobe marks the location of a 

 faint whitish pencil in the fringes. Fringes otherwise brownish gray with a 

 few white hairs in some examples. Secondaries gray-brown with concolorous 

 fringes. Expanse 27-29 mm. 



The S genitalia are siiiialr to those of mathewianus (see pi. LI. 

 fig. 3) but are slightly more slender in all parts. 



Distribution : Vancouver Is. to Colo, and Utah, June to Sept. 

 Manitoba and Pa., Aug. Cal., June. 



The Fernald collection contains two types of cineraceus, without 

 abdomens, from Washington and three of luguhris, one 9 and two 

 without abdomens, from California. These series would hardly be 

 taken for the same species even by a careful observer, and it requires 

 the transition shown in our series of nineteen specimens froin various 

 localities to convince us that the synonymy is correct. Typical lug\t- 

 bris is the darker form, w-ith heavier markings, whitish scaling through 

 the cell, and very evident blackish irroration. Typical cineraceus, on 

 the other hand, has a light brownish ground color, rather even, with 

 only a dot in the cell and the oblique patch before the cleft conspicuous ; 

 the black irroration is almost lacking. There is also a 5 in the Cam- 

 l)ridge Museum which may be regarded as a paratype. It is labelled 

 type. 



One specimen in our series from Aweme, Man. (Criddle), bears 

 Kcarfctt's label "Pteroplwrns baroni Fish" and another from Rounth- 

 waite "compares most closely with baroni Fish". The former seems 

 to us to be an immaculate specimen of cineraceus, though the absence 

 of discal marks does, indeed, result in an appearance remarkably like 

 baroni. The primaries are slightly broader, however, and we think 

 it best to place the specimen in this way for the present. The second 

 specimen strengthens this opinion, in that it is intermediate between 

 the first and typical cineraceus, though with the markings only slightly 

 reduced. Our two Calif ornian specimens are also very lightly marked. 



The life history is unknown. 



9. OiDAEMATOPHORUS RiLEYi Fernald, PI. XL\^ fig. 11. PI. LI. fig. 7. 



Ptcrophorus rileyi Fernald, Pter. N. A. 50, 1898. 

 ld„ Bull. 52 U. S. N. M. 446, 1902. 

 Meyrick, Gen. Ins. C, 17, 1910. 

 Id., Wagner's Lep. Cat. pars 17, 25, 1913. 

 Barnes & McDunnough, Check List 151, 1917. 



