528 EXTERNAL ANATOMY OF INSECTS. 



landra Palmarum there are four, two on each side, with 

 a prominent lobe between them a . To each of these 

 notches, at its under margin, below the ligament that 

 unites the occiput to the trunk, a muscle to raise the 

 head is usually attached. 



a Plate XXVII. Fig. 1. 



