THE COCCIDAE OF CALIFORNIA. 23 



Sac of male snow-white, more or less irregular in shape, no distinct 

 carina, about 4 mm. long, 2 mm. broad. 



Adult Male. — Measures, without setae, about 3 mm. long and 1 mm. 

 broad. Head and thorax dark brown, abdomen greenish yellow, 

 slightly covered with white secretion. Antennse 10-jointed. Formula: 

 (3 4 5) 6 7 8 9 10 1 2. Legs long, stout and very hairy. Wings dusky, 

 pubescent, each about 2^ mm. long by 1 mm. broad. Halteres small, 

 with two stout, well-curved hooks. Style long, stout and conical, form- 

 ing a blunt hook at caudal end. The last abdominal segment has two 

 groups of round gland openings; on the cephalic margin of eacti, two 

 very long, stout spines arise, which run parallel caudad. There are 

 also numerous stout hairs surrounding the glands. 



On Bahia sp. 



Pseudococcus aurilanatus Mask. 



Adult Female. — Slightly elongated, nearly globulous, of a rich dark 

 purple color, bearing on the dorsum a longitudinal band of bright 

 golden-colored meal, with small patches of similar 

 meal often visible on the edges. In alcohol or 

 potash it produces a rich purple tint, and if 

 crushed in the fingers stains them a dark red. 

 The eggs, which are also purple, are laid in a 

 mass behind the insect in a thin, white cottony 

 web, the mass having thus a general dark gray 

 appearance. Body obscurely segmented, length 

 about YY inch. Antennae usually of eight joints, 

 often of seven; in the former case the fourth, in ^^^ " P'^eudococnt^ cUn 

 the latter the third, joint is the longest, the rest o^^^^o" ea>-jug.) 

 subequal, except the last, which is fusiform, and nearly equal to the 

 longest; all the joints have a few hairs, the last bearing several. 



On Araucaria bidwillii. 



This species is commonly known as the "golden mealy-bug," and is 

 quite troublesome in the greenhouses on Araucaria bidwillii. I have 

 also found it on the same host plant in the open. 



Pseudococcus citri Risso. 



(Mealy-bug.) 



Adult Female.— Length 3.5 to 4 mm., width 2 to 2.5 mm., white or 

 yellow with brownish tinge, darker than P. longispinus, and with less 

 powdery secretions covering body. The seventeen lateral appendages 

 are short and blunt; posterior appendages not much longer than lateral 

 ones. Antennffi 8-jointed, less pubescent than in P. longispinus. For- 



