1912] Pseudococcus of South Africa 181 
regards measuring in many instances and the method adopted in the 
scheme used here is to obtain measurements in direct lines from points 
which remain definite with different: ways of folding of the legs in 
mounting. Hence the trochanter is measured with the femur. 
Fig. 3. 
Right metathoracic leg of Pseudococcus lounsburyi 
illustrating scheme of measurments. 
The measurements in # are given in the following order: 
1. Length of coxa. 
2. Breadth of coxa across base. 
3. Length of trochanter plus femur. 
4. Breadth of femur. 
5. Length of tibia. 
6. Breadth of tibia. 
7. Length of tarsus plus claw. 
Rrochoracionlegannn ny ae ares s+.) | 83 129 | 281 | 76 190 | 38 106 
Miesothoracieleg.cs2. Safsk.ecne | 83 | 121 | 304) 76 205 | 40 106 
Metathoracic leg................ | 90) | 120° |. S84: 79) Paani 4s 121 
| 
Specimen “b”’: Size mounted 3.2 mm. by 1.6 mm. 
The measurements of the segments of the antenna (one lacking) in 
this insect illustrate a very good average for the material collected. 
They are: 58, 64, 44, 26, 42, D8, 36 and 91 uw. The Sete of the anal 
lobes unfortunately are missing, while those of the anal ring average 
from 120u to 128 u. 
Specimen “‘c”’: Size mounted 3 mm. by 1.5 mm. 
Antennal Segments: Right—56, 64, 43, 28, 33, 27, 38, 88. Left— - 
62, 64, 43, 27, 38, 28, 36, 88. 
The fifth segment of the right antenna in this insect measures only 
33 mw. It is a coincidence that ae is the least measurement found for 
this segment, and it is on the same slide as the specimen showing the 
maximum length for segment IV. One of the sete of the anal lobes is 
missing. The one remaining measures 156 uw, while those of the anal 
ring average about 108 uy. 
