i8 



W. A. SANDS 



% similarity (phenon !.)»- 100 98 96 94 92 90 88 86 84 82 so 78 76 



disluctans 



•15 



1 50 



ateuchestes 





'17 



hfmrrus 





51 



cicur 





-13 



quietus 





1 5 



rpius 





11 



concilians 







improclatans 





53 



impedian 5 





IT 



amachctus 



impr.M m,i in s 

 brnignus 



acliolus 



chirotus 



imbcllis 



tithasus 



polyscolus 



cnapliorus 



apocncrns 





21 



irrivnsus 





IS 



nryctcs 





29 



kilimarvljarit 



us2f, t 27 



trostus 





28 



obstructus 





II 



ctcnnplicr 





36 



spinulatus 





11 



muricatus 





37 



pcctinatus 





3ft 



rastratus 





39 



aneristus 



choanonsi 



cuniculato 



scapheute 



E alc„us 



cavator 



Fig. 8. Dendrogram showing phenetic relationships between species as indicated by 



single linkage cluster analysis. 



