PSYLLID NOTES. 227 



The chief character separating these specimens from the spcies 

 to which it seems to be very closely allied is the female cauda 

 which terminates in a subacute tip, as shown in Fig. 352. There 

 is a distinct downward curve of the distal portion of the upper 

 plate. 



Triosa forcipula sp. nov. 



This species, like duhia] is apparently closely allied to niaura. 

 The head (Fig. 338) with moderately long dark cones subacute 

 at tip, and the wings (Fig. 317) are especially like those of that 

 species. Wing length about 2.75 mm. The female cauda 

 (Fig. 355) is distinctive, both upper and lower plates being 

 rather broad and elongate. The upper plate has a downward 

 curve. The male (Figs. 342 and 350) has the forceps strongly 

 bowed in caudal aspect with tip ending rather bluntly and highly 

 chitinized. The inner surface is supplied with long but not 

 comparatively heavy setse, the terminal group, however, are 

 stiff and approximate. 



Lot 1339 Sub 21. One female with data "Ithaca, N. Y. 16 May 1900." 

 Lot 1347 Sub 22. One male and one female with data "Hull, Ottawa, 

 Ont. 17-V-1903, W. Metcalfe." Two males with data "Hull, Ottawa, 

 Ont. 26-Vn-i903, W. Metcalfe." One female with data "Ottawa, 

 Ont. 17-V-1903, W. Metcalfe." One female with data. "Ottawa, 

 Ont. 29-V-1904, W. Metcalfe." One female with data, "Elm, Ottawa, 

 Ont. 5-VI-1904, W. Metcalfe." 



Lot 1348 Sub 72. Seven specimens with data "Ft. Collins, Col. 5- 

 12-99, E. D. Ball." 



Triosa longistylus Crawford. 



This species is closely allied to coUaris and in some characters 

 hardly to be distinguished from it. 



Figs. 320 and 361 show the wing and female cauda. The 

 wing of specimens at hand is about 3.45 mm long. 



The forceps of the male cauda are from the lateral aspect, 

 long and slender and rather strongly ciu'ved cephalad. On the 

 inner surface are two longitudinal ridges, one bearing relatively 

 few pointed setse and the other thickly set with several irregular 

 rows of large flat blade-like setse. 



Lot 1339 Sub 14. One female with data "S. Francisco dunes, Cal. 

 Nov. II, 1907, Bradley." 



Lot 1339 Sub 15. Two males and one female with data "Felton, St. 

 Cruz Mts., Cal. 15-19, May, '07. 300-500 ft. Bradley." 



