169 



ceou's. Metanotum, more emarginate, testaceous with lateral 

 infuscation. Abdomen, ist segment testaceous, the rest uni- 

 formly blackish brown, ten segments dorsally, only eight visible 

 ventrally. Forceps, more curved apically, a few rudimentary 

 teeth present along the basal inner edge, castaneous. Legs, 

 basal halves of the femora blackish brown; lobe of the 2nd tar- 

 sal joint similar to the previous instar. (Plate YlU fig. 4.) 



Third Larval his tar. 



At about the 17th day the 2nd ccydsis occurs. The dimen- 

 sions at this instar are as follows: 



Antennae 6 mm. 



Head and body 7-8 mm. 



Forceps 2 mm. 



The general facies still resembles that of the very young larva. 

 The dark brown areas of the previous instar have now l^ecome 

 black, or nearly so. 



The following changes are to be observed: Head black. 

 Antennae with sixteen joints, the additional four arising be- 

 tween the 3rd and 4th joints, again being produced from seg- 

 ment 3 ; the basal three testaceous, the newly formed 4th to 7th 

 joints shorter than those succeeding them, (thus resembling their 

 predecessors in the previous instar,) dark testaceous, the rest 

 black except usually the 12th and 13th (sometimes only one of 

 these), whitish. Pronotum black. Mesonotum black, slight- 

 ly wider than the pronotum. Metanotum, rather wider pos- 

 teriorly than the mesonotum, black, except along the posterior 

 emargination, which is whitish testaceous. Abdomen, — first 

 dorsal segment partially hidden by the rudimentary wing lobes, 

 darkly infuscate, the rest black. Forceps, dark castaneous, 

 several minute teeth present along the basal inner edge, the cur- 

 vature similar to that of the previous instar. Legs, — basal halves 

 oi the femora blackish, the apical halves and the tibiae, infuscate ; 

 lobe of the 2nd tarsal joint about half the length of the third 

 joint. (Plate VHl fig." 5.) 



FoiirtJi Larval Listar. 



At about the 30th day the 3rd ecdysis occurs: The dimen- 

 sions at this instar are : 

 Antennae 10 mm. 

 .Head and body 12-13 "''"i- 

 Forceps, 4-4.25 mm. 



