TREADWELL 



PLATE 8 



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Figures 1 to 7, Borvillea australiensis Mcintosh. Fig. 1. anterior end X 6. Fig. 2, first para- 

 podium X 41. Fig. 3, tenth parapodium X 41. Fig. 4, pygidiuni X 20. Fig. o, anterior 

 plates of the maxillary series X 41. Fig. 6, median plates of the maxillary series X 41. 

 Fig. 7, mandible X 41. 



Figures 8 and 9, Arabella duUa Treadwell. Fig. 8, maxilla X 68. Fig. 9, mandible X 68. 



Figure 10, maxilla of Drilonercis Inmhrictis Treadwell X 20. 



Figure U, maxilla of Drilonercis paucidentaia, Treadwell X oo. 



