H. F. WILSON 103 



one or two near the distal end and fifth with two large ones near the distal 

 end. Spur of sixth short and ending in a thick short spine. Wings normal 

 and with the median vein distinct and with two branches. Abdomen with a 

 row of six blunt tubercles on each side. Nectaries and cauda as in the apterous 

 form. Entire body, antennae, legs and nectaries covered with hairs. 



Measurements: Length of body, 4.78 ram.; width, 2.1 mm. Length of 

 antennal segments: III, 0.69 mm.; IV, 0.27 mm.; V, 0.35 mm.; VI, 0.135 mm. 

 Length of hind tibia, 3.22 mm.; hind tarsi, first segment, 0.135 mm.; second 

 segment, 0.35 mm.; length of beak, 1.9 mm.; length of wing, 5.33 mm.; width, 

 2.55 mm. 



Lachnus oregonensis new species (Plate X, figs. 1 to 8.) 



Collected on Pmus sp., Fort Klamath, Oregon, July G, 1914. 

 Found only on the cones. Mate and apterous forms. Possibly 

 this species extends its feeding to the shoots later in the season. 



Apterous viviparous female: General color shining brown, with the dorsum 

 dusky to black. (In balsam immediately after mounting, there appears to 

 be a slight streak down the center of the back with a dark black band extending 

 from the base of the al^domen to the cauda.) Antennae yellowish at the base 

 and black toward the tip. Legs dusky yeUow at the base and black toward 

 the tips; cauda black, nectaries black. Body obovate, robust and set with 

 numerous fine hairs. Antennae slender and reaching to the middle of the 

 mesothoracic segment; fifth segment with one or two large sensoria. Legs 

 and antennae set with fine hairs, rather more plentiful on tibiae than on the 

 femora. Nectaries broad and sHghtly tapering toward the central tube which 

 is flanged at the tip. Cauda broadly rounded. The beak reaches beyond the 

 tip of the abdomen. 



Measurements: Length of body, 3 mm.; width, 1.5 mm. Length of antennal 

 segments: III, 0.35 mm.; IV, 0.135 mm.; V, 0.135 mm.; VI, and spur, 0.135 

 mm. Length of hind tibia, 1.84 mm.; length of hind tarsus, 0.35 mm.; length 

 of hind metatarsus, 0.09 mm. 



Alale viviparous female: General color dark brown to black; abdomen with 

 the dorsum of each segment black. Antennae light at the base, shading to 

 black at the tip. Legs dusky yellow at the base of the femora and tibia and 

 black at the tips; tarsi black. Antennae reaching to the base of the wings, 

 the third segment with about 3 to 6 irregular sized round sensoria of medium 

 size; fourth with one or two large sensoria; fifth with two and the sixth with the 

 usual large and small sensoria. Abdomen with a row of fine tubercles along 

 each side and on a line below the nectaries. Nectaries broadly cone-shaped. 

 The beak reaches to the tip of the abdomen or slightly beyond. \Mng vena- 

 tion complete. Median vein entire but appearing as an outline. 



Measurements: Length of body, 2.4 mm. ; width, 1 mm. Length of antennal 

 segments: III, 0.38 mm.; IV, 0.154 mm.; V, 0.2 mm.; VI and spur, 0.154 mm. 

 Length of wing, 3.8 mm.; width, 1.22 mm.; length of hind tibia, 1.86 mm.; 

 length of hind tarsus, 0.4 mm.; length of hind metatarsus, 0.09 mm.; length 

 of beak, 2.58 mm. 



TRANS. AM. ENT. SOC, XLI. 



