EXTLANATIOX Ol-' I'L/vlT XVII. 



(All illustrations C(.iitri1«Ue:l ]>y Dr. W. P,. Clarl.-. j 



Hf.mi,\stf.k ktm .mi'i.i Clark ii. >\i p. 30,3 



1-3. Dor.sal, lateral ami \ciitral \ic\vs of the type fpcciir.en. 

 Il'<indbury clay: L"rillard. (102). 



HE.Ml.xsTitR wBLLERi Clark n. sp. p. 302 



4-6. Dorsal, lateral and \entral \-ie\\s of the tyiie speciir.en. 



McrihantviUc cloy-iinirl ; near Janicshr.iy:. { 141^. 



'J'4 



