PAPiEltJg. 125 



The antenna closely resemble those of P. fuscus, the 

 proportions of the different segments being, indeed, 

 almost exactly the same. 



The upper lip is rounded and entire. The margin 

 is clothed with short hairs rather than teeth, and those 

 at the middle are no longer than the lateral ones. 



The mandibles have respectively six and five teeth ; 

 in other respects they, as well as the maxillae and 

 maxillary palpi, much resemble those of P. fusciis, as 

 also do — 



The second pair of maxillge, which, however, have 

 only one minute tooth. The margin is varied some- 

 what in different individuals, being occasionally almost 

 straight, and in other cases more or less lobulated. 



The tongue is rounded and bilobed, having a slight 

 notch in the middle. 



The lower lip is formed of two somewhat quadrate 

 lobes, the outer angles of each lobe being rounded 

 off, while the inner apical angle of each is slightly 

 produced. The organ has several tufts of hair. The 

 margins have no teeth. 



The three pairs of legs, and the respective segments 

 of which they are composed, agree closely with those 

 of P. fuscus ; but the foot though formed on the same 

 type differs in its details. 



PL LY, fig. 4, represents one of the anterior feet. 

 The claw is stouter than in P. fuscus, and the lower 

 angle is produced into a small claw. The lower ap- 

 pendage is rather thicker than in P. fuscus, and the 

 filament, e, is somewhat shorter. 



The small appendage attached to the ventral surface 

 of the first abdominal segment is shaped somewhat 

 like a pear, and attached by its larger extremity. It 

 bears four or five short hairs. Attached to it is a 

 second piece, also of a pyriform shape, but with the 

 apex divided into two lobes. When the spring is 

 turned forwards, the base ends close to this organ, 

 exactly as described by M. Nicolet. 



The basal part of the spring, that is to say, the part 



