328 



Proceedings of the Royal Irish Academy. 



But Sclimidt ('95), to whom we owe the most recent account of 

 this interesting animal, denies that its segmentation is primitive, and 

 suggests that the pointed processes on the cox£e of its legs must he 

 regarde'd as the vestiges of pairs of limhs belonging to segments which 

 have become closely fused with the present evident segments. He 

 considers Scolopendrella, therefore, to be a very highly specialized 

 Diplopod, the fusion of the segments in couples being so intimate, that 

 the adjacent limbs have coalesced. But this view is surely far-fetched, 

 when we consider in how many points of structure Scolopendrella 



mxl. 



Fig. 3. a. Right Maxilla (mx.), tongue (li.), and maxillula (mxl.) of Scolopendrella 

 immaculata. The tip of the right maxillula is seen in situ ; the left 

 maxillula is exposed by removal of the maxilla and part of the tongue. 

 x390. 

 B. Second maxillae (labium) of Scolopendrella. x 90. 



approaches the Thysanura. The antennae resemble closely those of 

 Campodea, and diifer in the most marked way from those of any 

 Millipede. The head-skeleton, with its angular epicranial suture, 

 is quite Insectan. Latzel's figui-es ('84) show clearly three distinct 

 pairs of jaws, the mandibles, maxillse, and labium corresponding rather 



i 



