JOHN B. SMITH, SC.D. 379 



Hah. — Huachuca Mountains, Arizona, in August; Yavapai Co., 

 Arizona, May 22d. 



The type is in the Neumoegen collection, and I have two females 

 before me that have been directly compared with it. Unfortunately 

 I have no male and I am assuming that this resembles tenalis, a 

 species with similar ornamentation but smaller, with less obvious 

 median lines and more conspicuous costal spots. 



Pleoiiectyptera teu:tli!!» n. sp. 



Ground color au even, very pale reddish-gray; sometimes like a reddish flush 

 over a creamy base. Palpi brown at the sides. Primaries with the reniform 

 black, conspicuous, moderate in size, without sharp defining line. Median lines 

 marked on costa by trigonate blackish marks, and below that barely traceable. 

 So far as can be made out the t. a. line is nearly upright, and the t. p. only a little 

 out and incurved over and below cell. S. t. line may be entirely lost or may be 

 quite obvious, ranging from a series of dusky spots preceded by single white 

 scales to an almost continuous series of spots. Secondaries reddish outwardly 

 over a yellowish base, the latter predominating. Beneath yellowish, shaded 

 with reddish over costal and outer regions, the maculation of upper side 

 obscurely reproduced. Expands .84-. 88 inches = 21-22 mm. 



Hah. — Arizona : Minnehaha, Yavapai Co., August 2d, 4th and 

 18th ; Yuma Co., Southern Arizona, August 15tli. 



Two males and four females, of which two, from Southern 

 Arizona, are from Mr. Poling, while others were collected by Mr. 

 Hutson. The species is a very neat little one, like a small historia- 

 ns, with the median lines eliminated. There is little variation, ex- 

 cept in the intensity of the reddish and the development of the s. t. 

 line. There are no ob.servable secondary sexual characters in the 

 male and the antennal joints are merely pubescent. 



EXPLANATION OF PLATE XL 

 Fig. 1. — Pleonectypfera 2)iji'alis, base of abdomen in the male, showing the charac- 

 teristic tuftings with the attachments on the first ring. 



" 2. — Pleonectyptera pyralis, anal tufts and protrusible brush of male. This 

 brush may be completely retracted into the penultimate segment. 



" 3. — Pleonectyptera pyralis, anterior, middle and posterior legs of male. 



" 4. — Pleonectyptera phalxnalis, base of abdomen of male, showing the charac- 

 teristic tufts, with their points of attachment. 



" 5. — Pleonectyptera incustdis, wings of male, showing venation and the char- 

 acteristic hair tuftings. 



" 6. — Pleonectyptera incusalis, anterior, middle and posterior legs of male. 



TKANS. AM. KNT. SOC. XXXIII. DECBMBEB, 1907 



