94 ENTOMOLOGICAL SOCIETY 



Face black. Head white, with a black dot on vertex. Thorax white, 

 with black longitudinal central line. Patagia white, with black bases 

 and tips. Fore wings white, more or less overlaid with fuscous ; from 

 base to apex is a deep black longitudinal central streak; the costal part 

 of the wing above this streak is somewhat darker than the dorsal part. 

 The streak is interrupted, though not entirely broken, at the end of 

 the cell by a pure white dash and it is edged dorsally from base to 

 beyond the middle by a narrow longitudinal interrupted line of bright 

 orange scales. A few black scales are scattered over the light portion 

 of the wing and tend in the apical part to form narrow longitudinal 

 streaks. Along the dorsal edge is a row of black dots before the cilia, 

 which are white. Hind wings light fuscous. Abdomen dark fuscous. 

 Legs black with white annulations. 

 Alar expanse, 27 mm. 



St. Louis, Mo. (H. A. McElhose). 



Type. No. 9898, U. S. National Museum. 



Named in honor of the collector, my friend, Mr. H. A. 

 McElhose, who has sent me this and other interesting Micro- 

 lepidoptera. The species is nearest Ethmia subcarulea Wal- 

 singham, but at once distinguished from this and all described 

 American species of the genus by the prominent central longi 

 tudinal black streak. 



Ethmia umbrimarginella, n. sp. 



Antennae deep purplish black. Labial palpi black ; rather more weakly 

 developed than is typical of the genus and with long spreading brush 

 of thin black hairs on the second joint. Tongue coiled, black. Face, 

 head, and thorax deep black. Fore wings dark mouse-gray, with white 

 costal edge and a central longitudinal streak of bright reddish orange 

 from base to near the end of the cell. At the end of the cell is a large 

 oblong deep black spot divided in the middle by a transverse, bright 

 orange dash. On the middle of the wing just above the longitudinal 

 orange streak is a small round deep black dot and preceding it below 

 the orange streak is a larger round black dot. Between this last dot 

 and the base of the wing is a short longitudinal black streak edging 

 the orange. Cilia gray. Hind wings chalky white, with a broad dark 

 gray border all around the edge, cilia gray. Abdomen blackish brown. 

 Legs unicolored dark brown. 



Alar expanse, 20 mm. 



Las Cruces, New Mexico (T. D. A. Cockerell). Professor 

 Cockerell informs me that the species was taken February 22 

 on canaigre (Rumex hymenosepalus) in Mesilla Park. 



Type. No. 9899, U. S. National Museum. 



