140 Annals Entomological Society of America [Vol. X, 



have we found it heavily covered with the white secretion. 

 It appears like a rusty brown or black louse on the twigs, while 

 this one appears like a very light gray or white louse. 

 Our collection records are as follows: 



Fundatrix. 



Alate and 



apterous vivi-1 " 



parous females | " 



I 



Ovip. 9 1 



\Boulder, 



Male Ft. Collins, 



Ft. Collins, Colo., April 13, '08, L. C. Bragg, Picea parr\ana 

 April 21, '08, C. P. Gillette, " 

 April 28, '08, L. C. Bragg, 

 April 22, '08, C. P. Gillette, " 

 April 25, '08, C. P. Gillette, 

 May 14, '08, C. P. Gillette, 

 May 19, '10, L. C. Bragg, 

 May 21, '15, L. C. Bragg, 

 June 12, '14, L. C. Bragg, 

 Oct. 15, '10, L. C. Bragg, 

 Oct. 23, '09, L. C. Bragg, 

 Oct. 15, '10, L. C. Bragg, 



Lachnus tomentosus (De Geer). 



Examples of what seems to be this species were taken by the writer 

 from needles of Pinns r ad lata, standing on the campus of the University 

 of California, August 8, 1915, where they were very abundant. The 

 •examples taken agree in nearly every respect with the excellent descrip- 

 tion and figures of this species given by G. Del Guercio in " Contribuzione 

 Alia Conoscenza dei Lacnidi Italiani, " 1909, p. 283. 



Examples taken on Pinus scopulorum in Colorado and listed below, 

 agree so closely with the European fonn I refrain from giving it even 

 a varietal name. 



I give below descriptions and figures made from freshly collected 

 Colorado material. The sexual forms of this louse were found by the 

 writer in very great abundance upon the trees of Pinus scopulorum 

 in the City Park of Denver, during the month of October, 1916. 



Voting Stem Mother. — Specimen taken at Hcrsetooth Mountain, 

 west of Fort Collins, as early as March 13, 1910. The lice were still 

 hatching and had the habit of arranging themselves in single file, so 

 close that they touched each other, along the needles. When first 

 hatched, the color is dark olive-green with pale yellow legs and antennse. 

 After a few hours a slight grayish bloom covers the body, the legs and 

 antennas become con.siderably darker in color and the cornicles are each 

 in a small dusky circular spot. One or two rows of small dark spots a 

 little inside the lateral margin on either side, extend longitudinally 

 over the abdomen. Beak not attaining tip of abdomen; length of body, 

 1 millimeter. See figure 17. 



Adtilt Stem Mother. — Entirely cinereous in general color on account 

 of a heavy flocculent secretion covering the body, legs and antennae. 

 The eyes, ends of the antennee, cornicles and naked tarsi are deep black; 

 body color, beneath the secretion, dark olive-green, legs dusky with 

 tibiae black tipped. Length of body 2.10; antennas, 1; hind tibiae, 1.30 

 beak but little surpassing hind coxae; joints of antennae: III, longest 

 IV and V, sub-equal; VI, with very short spur, a little shorter than V 

 permanent sensoria on joints V and VI only; body antennee and legs 

 rather sparsely set with long slender hairs. See figures 18 to 20. 



