SOUTH AKIilCAN lIAiaVORMS. 



151 



together, with s.o. 2a slig'litly medial to a line connecting the 

 two, and nearer to s.o. 2 than to s.o. 3. 



Gular Region. — Seta g. 1 short, almost straight behind 

 o. la ; puncture g. la raedio-caudal to g. I. 



Lab rum. — About twice as wide as high, median notch 

 extending up to one-third of the total height. M. 1 and m. 2 

 closer than m. 2 and 1.2; m. 3 moved up till within the edge 

 of the hypopharyngeal thickening. L. 1 slightly higher than 

 m. 1 ; 1. 2 close to, and medio-distal to, 1. 1, submarginal ; 1. 3 

 moved inward from the margin (text-fig. 2, c). 



Thorax and Abdomen. — Thoracic plates with pattern 

 as shown in text-fig. 4, c. Position of seta3 on thorax and 

 abdomen similar to that described for A. junodi. The 

 setiferous plates on the abdominal segments are rather 

 conspicuous, and the 1st abd. shows a rather large dorsal 

 shield resembling that of the thoracic segments. On the 

 following segment we find the posterior tubercles fused 

 into one transverse ridge, the anterior ones separate. All 

 these segments are strongly wrinkled on the dorsal aspect, 

 this wrinkled area being considerably darker than the lateral 

 and ventral parts. On the 8th abdominal segment we find 

 again a broad doi'sal shield, while the suranal plate is large, 

 covering the entire dorsal aspect of the 10th segment. 



The number of proleg hooks (text-fig. 4, b) varies slightly 

 as shown in the table : 



