46 THE CANADIAN ENTOMOLOGIST 



long as four. Third segment with seven or eight regular and round sensoria 

 whose diameter is about one-half the diameter of the segment. Fourth seg- 

 ment with two or three and five with two sensoria. Beak extending slightly 

 beyond the hind coxae. Wings typical of the genus. 



Measurements. — Length of body 4 mm. Length of antennal segments: 

 III, 0.6 mm. ; IV, 0.29 mm. ; V, 0.29 mm. ; VI, 0.15 mm. Total length 1.48 mm. 

 Rostrum: III, 0.31 mm.; IV, 0.30 mm.; V, 0.1 mm. Total length 2.4 mm. 

 Length of hind tibiae 2.9 mm. ; hind tarsus 0.39 mm. 



Lachniella schwarzii, new species. 



From material collected by E. A. Schwarz at Prescott, Arizona, June 20, 

 1901, on Pinus sp. Also three specimens collected by Professor C. P. 

 Gillette at Laporte, Colorado, July 1, 1898, on Pmus ponderosa. Types in 

 U. S. Bureau of Entomology collection. 



At a first glance this species may be taken for Lachniella montanensis as 

 the m.arkings of the legs and antennae are quite alike and the wings, nectaries and 

 Cauda are very similar. The antennae vary considerably, and the beak of L. 

 schivarzii is much the longer in proportion to the length of the body. 



Apterous viviparous female. — Antennae light coloured over basal two-thirds 

 of third and basal one-third of fourth and fifth segments, remaining parts and 

 sixth segment dusky black. The three pairs of legs except the base of the 

 femora and a yellowish area towards the base of the tibiae dusky black. This 

 light coloured area is much more extensive on the two' front pairs than on the 

 rear pair. 



Third antennal segment equal to or slightly longer than the fourth and 

 fifth segments together. Fifth segment slightly longer than fourth, and sixth 

 about two-thirds as long as four. Third segment with one small sensoria at 

 the distal end, fourth and fifth with two each. These are larger than the one 

 on the third segment. Beak long, extending almost to or beyond the tip of the 

 abdomen. Hairs on antennae and body moderately abundant. Legs thickly 

 set with short drooping hairs.. Hind tibiae strongly curved. Nectaries large 

 and volcano-shaped. Cauda angular. 



Measurements.- — Length of body 2.5 mm. Length of antennal segments: 

 III, 0.56 rhm.; IV, 0.23 mm.; V, 0.26 mm.; VI, 0.166 mm.; IV, 0.23 mm.; V, 

 0.1 mm. Total length 2.49 mm. Length of hind tibiae 2.45 mm.; hind tarsus 

 0.33 mm. 



Alate viviparous female. — Colour markings of antennae and legs like those of 

 the apterous female except that the light areas on the tibiae are not as extensive. 

 Comparative length of antennal segments as in the apterous form. Third 

 antennal segment with four to six round sensoria of irregular size, fourth with 

 one or two and fifth with two. Rostrum long, reaching to or beyond the tip 

 of the abdomen. Cornicles large and volcano-shaped, cauda angular. 



Measurements.- — Length of body 3 mm. Length of antennal segments: 

 III, 0.51 mm.; IV, 0.23 mm.; V, 0.25 mm.; VI, 0.166 mm. Total length 1.3 

 mm. Rostrum: III, 0.25 mm.; IV, 0.22 mm.; V, 0.1 mm. Total length 2.9 

 mm. Hind tibiae 2.49 mm.; hind tarsus 0.31 mm. 



Lachniella pergandei, new species. 



Description made from four slides selected from 25 as being representative 

 of the different stages of the species. 



