259 



TWO NEW COCCID^; FEOM LAGOS, W. AFRICA. 

 By T. D. A. Cockerell, N. M. Agr. Exp. Sta. 



Lecanium strachani, n. sp. 



2 . Perfectly flat, very broad ; length and breadth each about 

 5 mm. ; anterior margin rounded ; hind margin truncate. Light 

 brown, the dorsal surface covered with glassy secretion, which in the 

 middle of the back is more or less broken up into small oval plates. 

 Genital aperture surrounded by cottony matter, which does not project 

 beyond the margin of the scale. Legs and antennae well-developed, 

 light brown ; antennas 8-segmented, formula 3415(268)7. Marginal 

 spines numerous, 66 /x/x long. Skin after boiling colourless, with only 

 very minute glands. The following measurements are in /x/x : — 



Antennal segments:— (1) 66, (2) 50, (3) 116, (4) 83, (5) 58, (6) 50, 

 (7) 41, (8) 50. 



Coxa 215, femur with trochanter 315, tibia 249, tarsus 99. 



Egg in body of ? 265 x 166 pp, 



$ . Scale glassy, quite ordinary. 



Hab. Lagos, on Anona squamosa. An interesting and dis- 

 tinct species, collected by Dr. H. Strachan, after whom it is named. 



Icerya seychellarum (Westw.), race ; albolutea, n. race. 



? . On under side of leaf; about 5 mm. long and 4 broad ; dark 

 red, resting on a cushion of yellow and white cotton. Dorsum entirely 

 covered with bright yellow cotton. From the sides there radiate thick 

 tufts (about 3 mm. long and nearly 1 broad at base) of cotton, which 

 are white beneath and bright canary yellow above. Apparently no 

 well-formed ovisac, but a lot of loose cottony secretion. Antennas 

 11 -segmented ; the following measurements of the segments are in 

 /*/»:— (2)99, (3) 99, (4) 66, (5) 50, (6) 83, (7) 83, (8) 83, (9)83, 

 (10) 99, (11) 157. Width of anterior femur 149 to 199 fifi. 



Hab. Lagos, on Anona squamosa, collected by Dr. H. Strachan. 



This is not related to I. ewarti, which Newstead described 

 from Lagos, but is closely allied to I. seychellarum and I. crocea, 

 although it seems not to have the glassy or silky filaments of 

 those species. For the present, it may be treated as a race or 

 subspecies of seychellarum. The only material of I. seychellarum 

 I have seen is a small quantity in alcohol kindly sent to me by 

 Dr. L. 0. Howard ; it was collected in Mauritius, and sent to the 

 Department of Agriculture by Mr. D. Morris of Kew. Comparing 

 this with albolutea, I find the antennas almost the same, but 

 segment 3 measures 116 w, 4 is 83 w, and there are other such 

 small differences, which may not be constant. The legs of seychel- 

 larum are darker than those of albolutea, with very curved tarsi, 

 and the bristles on the femur and tibia are stronger and longer. 

 The anterior legs of the two forms measure as follows in w : — 



Coxa Trochanter Femur Tibia Tarsus Claw 



1 I. albolutea 331 182 516 533 232 66 



I. seychellarum 398 265 514 580 265 66 



