16 Journal New York Entomological Society. [Vol. xxiii. 



except a conspicuous black line on the posterior margin of the first 

 segment. Legs yellow, streaked and spotted with black. 



The type was collected by Mr. Nunenmacher. In the collection of 

 the American Museum of Natural History there is a female from 

 Angel Island, California, that probably belongs to this species, though 

 the basal areole of the elytra is not so narrowed to a rounded apex 

 as in the male type. However, otherwise it appears to be the same. 

 The last ventral segment has a broad V-shaped notch extending 

 about half of the way to its base. 



Okanagana mercedita new species. 



Type male, Merced Co., California, June i8, 1914. 



Length 19 mm.; to the tip of the wings 21 mm.; fore wing 6.5 by 



17 mm. Head about as broad as the front margin of the pronotum, 

 the front produced nearly as in synodica; supra-antennal plates with 

 outer edge rounded. The median sulcus on the front rather broad, 

 with the sides sinuated. Pronotum 3 by 7.5 mm., the sides not 

 parallel, the humeral angles rounded and the anterior angles bent 

 downward. Opercula oblique, sides sinuated. Last ventral segment 

 with the base longer than the sides which converge to the rounded 

 end. Valve is long as in synodica (5 mm.). Uncus when viewed 

 in profile, hooked; when viewed from above narrowed toward the 

 deeply notched apex. Fore wings with the basal areole oblong and 

 square at apex; both pairs of wings more transparent than in 

 synodica and triaiigiilafa, with the veins commencing at the trans- 

 verse fold infuscated. Costa of the fore wings yellowish ; all of the 

 wings fuscous and bright orange at base ; flaps bright orange. The 

 dorsum of this species is blackish sparingly covered with light 

 colored appressed hairs. Head above black with a light colored band 

 in front of the anterior ocellus and extending on to the supra-antennal 

 plates where there is an enclosed black spot over each antenna; a 

 light spot on the median sulcus extends to the posterior margin. 

 Pronotum with the central portion black except some of the grooves, 

 and irregularly margined with pale except the hind margin which 

 is more definitely banded. Mesonotum black with two light colored 

 streaks on the anterior part being the exterior lines of the often 

 present W-mark of some species; below these the X, which is light 

 colored and joins on to the light colored band encircling the posterior 



