PSYI^IvID NOTES. • 225 



mottled wing of ditbia (Fig. 404). The head (Fig. 416) has 

 the broad rounded lobes and short antennae of the allied speci- 

 mens. 



PachyysyUa pallida n. sp. 



Material bearing the data "Arizona C. U. Lot 34; Cornell U. 

 Lot 45 Sub 469" is apparently a new Pachypsylla. The wing 

 (Fig. 403) is wide at the basal third and broad for its length. 

 It is more or less shaded -especially at the distal marginal band, 

 proximad which is a pale path extending transversely across the 

 wing. From the form of both the wing and the head this 

 species seems allied to dubia though easily distinguishable from 

 it and the female cauda is also similar. The antenna is sub- 

 equal in length to the width of the head across the eyes. The 

 cones are broad and thick and bluntly rounded. (Fig. 410.) 

 Me. 1339 Sub 51. Me. 1339 Sub 55 and 56. 



Triozinai;. 

 Trioza aylmeriae sp. nov. 



This species is easily distinguished from previously described 

 members of this genus in America. The head (Fig, 330) is 

 of an ordinary Trioza type with large divergent cones rather 

 acutely rounded apically. The wing (Fig. 316) measures about 

 3 mm. in length, and is rather evenly elongate with tip rounded. 

 They are clear and unmarked except for the three marginal 

 spots common for this genus. The branches of M and Cu are 

 relatively long. 



The female caudal segment (Figs. 343 and 346) is large and 

 the slender tip of the upper plate extends beyond the lower' 

 plate. The lateral arms of the male catida (Fig. 345) are con-' 

 spicuously long and heavily supplied with long setse. The 

 forceps are enlarged and blunt at the tip (Fig 344), Lot 

 1347 Sub 19. Eleven specimens with data, "Bilberry. Aylmer, 

 Ottawa, Ont. 20- V 1906 W. Metcalfe." 



Trioza collaris Crawford. 



Lat 1348 Sub 74. A 'single female with data "Ariz. 2217., 

 5-20-96 Dr. R. E. Knize, Tuscon," is apparently collaris Craw- 

 ford. The Cauda is shown in Fig. 358 and the wing is not dis- 



