COCCID^E 57 



Icerîa genista© n. sp. 



The adult female oval in outline, a little wider posteriorly 

 than anteriorly. The dorsum is covered with secretion, arranged 

 in five principal rows, one central, two marginal. The se- 

 cretion is arranged in short, irregular tufts, that are longer 

 in the central row in the middle and at each extremity. The 

 ovi-sac is large, conical in form, and terminates posteriorly 

 in one shorl process. It is white with a creamy tint at the 

 base, smooth on the ventral surface and finely striated with 

 about 14 lines on the dorsum. The insect is 3,5 mm. wide, 

 2,75 mm. high, and 6 mm. long without the ovi-sac, or 

 13 mm. including the ovi-sac. 



Denuded of wax, the body is brown with the anterior 

 extremity yellowish. The antennae and legs are dark brown, 

 nearly black. Boiled in a solution of KOH, it turns the 

 liquid turbid and yellow in color. The body is 4,75 mm. 

 long, 2,50 mm. wide, and 2 mm. high. 



The antennae are from 0,909-1,058 mm. long, with eleven 

 joints. Ihe joints vary much in length, but their relative 

 proportions are preserved. The length of the joints is : (1), 

 105; (z), 105 to 122; (3), 87 to 105; (4), t)\ to 70; (5), 61 

 to 70 ; (6), 70 to 79; (7), 70 to 79; (8), 70 to 87; (% 70 

 to 87; (lOj, 70 to 79; (lij, 140 to 175. The approximate 

 formula is it, (2, i, 3;, (6, 7, 8, 9, JO}, (4, 5). All of the 

 joints have hairs. The eyes are large, dark and conical in 

 shape, and are situated near the base of the antennae. The 

 legs are long, well furnished with hairs, with the tarsus curved 

 and without digitules. Length of the first pair of legs : coxa 

 210 to 297; femur with trochanter 542-612; tibia 525-612; 

 tarsus 192-297; claw 52 to 70. The digitules of the claw 

 are short and filiform. 



Near the posterior margin of the body there are three 

 pair of little spiracles, each one with a shorte tube termina- 

 ting in a button, giving them the shape of mushrooms. On 

 the ventral surface of the body, near the posterior extremity, 

 there are four large, circular or oval orifices, three of which 

 are situated in a transverse row and near the extremity, and 

 the remaining one is isolated, and placed a little in front of 

 the others. These orifices vary in size, some of them having 

 a diameter of 100 micromillimetrs. 



The entire surface of the body is furnished with hairs, 

 some of which are short, but there are others that are stout 



