28 Bulletin de la Société Entomologique d'Egypte 



divided. The second anniilus ol" Ihe lirsl protlioracie 

 segniciil bears the pair ol" anterior spiracles on its 

 sides. They project as sliort cylindrical lubes with 

 wrinkled bases and circular 0|)enings. 



The body is densely covered with chitinous tuber- 

 cjes ^vhich are mostly very minute. They appear 

 under the microscope like nails eml)edded in the skin. 

 The annuii are provided with transversely arranged 

 dorsal shields. The more exposed parts ol' the annuii 

 are protected by chitinous shields in addition to the 

 tubercles. Every dorsal shield bears a longitudinal 

 row ol" shor*, coricai processes, each of which ends 

 in a long and stout seta. The middle annulus of most 

 oF the abdominal segments is provided with lour small 

 and distinct plates, which are placed laterally and are 

 more chitinous than the neighhouring integument. 

 The sides of the body bear a lateral row of close-set ^ 

 setae, with here and there a larger plate, and processes 

 bearing much longer setae. 



The eighth and last abdominal segment is cylin- 

 drical and truncate, somewliat tapering towards the 

 end and is enclosed dorsally and laterally by a single 

 large shield which bears seven pairs of setae : two 

 pairs ventrally, one longer pair dorsally and four pairs 

 laterally. Ventrally this eighth segment is more flexi- 

 ble and is provided with a central scutcheon which 

 bears a pair of long setae along its up[)er end and 

 three shorter pairs towards the centre. The aiius is 

 situated about the centre of the scutcheon and is sur- 

 rounded by thi'ee plates, one anterior and two lateral. 

 The anterior and median plate is triangular in shape; 

 its two free sides are concave and each provided with 



