20 THE CANADIAN ENTOMOLOGIST 



than the fourth, fifth and sixth. Fourth segment shorter than the sixth. Third 

 segment with one, two or no sensoria, fourth with one, and fifth with two. 

 Beak extending to base of nectaries. Nectaries large and broadly cone-shaped. 

 Body globose, the abdomen being wider than long. Body, legs and antennae 

 set with fine, silky hairs of medium length. 



Measurements. — Length of body 2.25 mm. Length of antennal segments: 

 III, 0.41 mm.; IV, 0.187 mm.; V, 0.23 mm.; VI, 0.19 mm. Total length 1.18 

 mm. Beak: III, 0.21 mm.; IV, 0.17 mm.; V, 0.085 mm. Total length 1.78 

 mm. Length of hind tibia 1.46 mm. Hind tarsus 0.37 mm. 



Alate viviparous female.- — Antennae with basal two-thirds of third segment 

 light-coloured remaining part of third and all of the other segments dusky. 

 Legs alike in colouring with basal portions of the femora and tibiae except the 

 joints light coloured, remaining portions dusky. Cauda and anal plate dusky 

 to black. Antennae with third segment shorter than the fourth, fifth and sixth 

 together. Fourth segment shorter than the sixth. Third segment with six 

 to eight large, round sensoria, fourth with one or two, and fifth with two. Beak 

 reaching slightly beyond the nectaries, in normal specimens. In specimens 

 somewhat shrunken it appears to reach to the tip of the abdomen. Nectaries 

 large and broadly cone-shaped. 



Measurements. — Length of body 2.26 mm. Length of antennal segments: 

 III, 0.52 mm.; IV, 0.18 mm.;'V, 0.27 mm.; VI, 0.21 mm. Total length 1.28 

 mm. Beak: III, 0.21 mm.; IV, 0.166 mm.; V, 0.083 mm. Total length 1.97 

 mm. Length of hind tibiae 1.84 mm, 



Lachniella gracilis, n. sp. 



From a slide containing one apterous and two alate specimens collected 

 by Theo. Pergande in the District of Columbia, May 27, 1894, on Pinus inops. 

 Pergande applied the name here given, and it has been retained for that reason. 

 Other slides in the material appear to be the same species, but in this case it 

 seemed best to use but the one slide in setting this type. Types in the U. S. 

 Bureau of Entomology collection. 



Apterous viviparous female. — Antennae light at the base and shading to 

 dusky at the tip. Front and middle pair of legs light coloured except at the 

 joints, third pair black except a small area just beyond the base. Cauda dusky 

 to black. Third antennal segment approximately equal to the length of the 

 fourth, fifth and sixth segments together. Fourth and fifth segments approxi- 

 mately equal in length, and the sixth shorter than the fourth. Third segment 

 without sensoria although a single small one was observed on other specimens, 

 fourth segment with one or two sensoria and the fifth with two nectaries cone- 

 shaped, and unusually large. Cauda rather more angular than rounded, but 

 with a widely rounded tip. Hairs short and much more inconspicuous at the 

 base of the tibiae than at the tip. Hairs at the base distinctly upstanding, 

 those toward the distal end semi-erect. 



Measurements. — Length of body 3.25 mm. Length of antennal segments: 

 III, 0.46 mm.; IV, 0.21 mm.; V, 0.21 mm.; VI, 0.145 mm. Total length 1.22 

 mm. Beak: III, 0.25 mm.; IV, 0.187 mm.; V, 0.063 mm. Total length 1.86 

 mm. Length of hind tibiae 2.45 mm. Length of hind tarsus 0.31 mm. 



Alate viviparous female. — Antennae light at the base of the third segment, 



