96 FIFTH ANNUAL REPORT 



(^ Scale — Larval part golden-yellow ; the anal shield yellovvish-brown, sometimes 

 quite pale, inclining to white, fattened, straight, rather more than twice the length 

 of larval scale, increasing in width from tip to end, where it is slightly truncate ; at- 

 tached by a white film ; average length, 0.035 inch. 



2 — Average length, 0.05 inch ; color, pale yellow ; jng-shaped and flattened when 

 young, more globular when mature, and twice as long as wide ; the cephalo-thoracic 

 portion rounded and entire, but narrower tliau the abdominal, at the juncture with 

 which it forms a more or less conspicuous lateral projection; on its inferior side is a 

 tubercle, having two longitudinal ridges, and giving rise to a corneous, filiform pro- 

 boscis, longer than the body, and composed of four separate parts ; posterior abdomi- 

 nal joints deeply lobed laterally, with two or three blunt, fleshy hairs to each lobe ; 

 anal plate gamboge-yellow, corneous, witli an irregular border, presenting two larger, 

 slightly tri-lobed, median projections, and one or more smaller ones each side, fur- 

 nished with spinous hairs, two especially between the tri-lobed projections aforenamed ; 

 five more or less complete sets of secretors visible from below, arranged around anus 

 in form of an arc, the median set with normally 10, the upper laterals 20, and the lower 

 laterals 14; besides these, some six or more blunt tubes, and a series of shorter pointed 

 ones, may be noticed along the border, and doubtless serve as secretors. (See Fig. 32 b.) 



5 Scale — Larval scale golden-yellow ; median scale somewhat darker ; anal shield 

 varying from pale brown to deep purplish-gray, and generally of a color wilh the bark 

 it is ui^on. The whole scale is often incanous, but the hoary film easily rubs off ; it 

 averages 0.12 inch in length, but is quite variable in form and size, being either straight 

 or curved, narrow and strongly arched, or broad and flatter, but always rounded at 

 the end ; the white inferior lamime at sides sometimes show distinctly from above, and 

 give the appearance of a pale border. 



The lice, whether c? or $, vary in appearance according to position and state of 

 maturity. In making the foregoing descriptions and figures, I have taken what ap- 

 peared the most natural jiositions, after examination of many specimens. The d* abdo- 

 men shrinks very much in drying, and tlie more detailed 5 characters are variable. 

 "While the normal number of secretors in the middle set is never more than 10, I have 

 sometimes found but 8 or 9 ; that of the upper laterals never surpasses 20, but may be 

 as low as 15; while that of the lower laterals is more uniformly 14, though I have 

 sometimes found IG, and at others 12. Opposite sets do not always contain the same 

 number. 



