SOUTH AFRICAN BAGWORMS. 179 



number present in the late instars (text-fig. 12, e). The 

 numbers are not constant, as shown in the table on p. 178, 

 resulting from the examination of two specimens. 



The number varies from 10 to 13 for the abdominal and 

 from 8 to 12 for tlie anal prolegs. 



The subsequent instars up to the penultimate are not known. 



Penultimate Instar (Female). 



Length of larva 37 to 40 mu). Ground colour pinkish buff 

 (XXIX), changing to avellaneous (XL) on the abdominal 

 segments. Markings on head and thoracic shields black ; 

 dorsal aspect of abdominal segments 3 to 10 fuscous black 

 (XLYI). Spiracles orauge cinnamon (XXIX), median area 

 of under side of abdominal segments and setiferous plates 

 on side bister (XXIX). Thoracic legs and hooks of prolegs 

 fuscous black (XLVI). 



Head. — Width of head-case 4 mm. Parietal cleft deeper 

 than in the first instar. 



Postero-dorsal Kegion. — Upper part of head greatly 

 enlarged as compared with the first instar, as a result of 

 which the postero-dorsal sette are now placed nearer to the 

 lower part of that region. Punctures pd. 2a and pd. la could 

 not be seen (text-fig. 12, a). 



An tero- dorsal Region. — Relative position of setas the 

 same as in the first instar. 



Frontal Region. — Frons relatively shorter than in the 

 first instar, frontal punctures near median line, placed at 

 lower one-fifth of the height of the frons. Frontal seta? only 

 slightly higher than the punctures. 



Adfrontal Region. — Adfrontals distinctly separated 

 from the parietals, broad and massive ; relative position of 

 sette the same as in the first instar. 



Clypeal Region. — Clypeus distinct from the frons. 

 Seta3 1 and 2 closer together than the 1 of each side. 



cellar, Sub-o cellar and Gular Region. — Ocellus 

 6 placed betAveen and behind a line connecting ocellus 



