Prof. J. Park — Tertiaries and Cretaceous, New Zealand. 539 



It will thus be seen that so far as our knowledge of the fossil 

 Shrews goes they promise to support, when better known, the 

 classification of the Pleistocene deposits which I put forward in my 

 preliminary account of the Voles and Lemmings. Sorex araneus and 

 Neomys fodiens do not inhabit Ireland, although S. minutus is found 

 there. All three were present in Britain in the closing stages of 

 the Pleistocene period ; it may be that S. minutus arrived a little 

 earlier than its two larger relatives, or it may have been a little 

 better adapted for so adventurous an enterprise as a late Pleistocene 

 journey to Ireland. In conclusion, I have to thank many friends, 

 and in particular Mr. A. C. Savin and Dr. Frank Corner, for much 

 fossil and recent material. 



COMBINED EXPLANATION OF LOWEE JAWS, PLATE XXV, AND 



TEXT-FIGUEES OF CONDYLES OF SHEEWS. 



a = superior, 6 = inferior articular facette of mandible. 

 Pig. 



1. Neomys newtoni, Hinton. Inner view of left ramus ; la, posterior view 



of condyle. Upper Freshwater Bed, West Eunton. Savin private 

 collection, No. 631.5. 



2. IV. browni, Hinton. Inner view of left ramus ; 2a, posterior view of 



condyle. Pleistocene, Grays Thurrock. B.M. 28079. 



3. N. fodiens (?), Schr. Inner view of left ramus; 3a, posterior view of 



condyle. Pleistocene, Ightham Fissures. Corner Coll. 



4. N. fodiens (?), Schr. Inner view of left ramus; 4a, posterior view of 



condyle. Pleistocene, Ightham Fissures. Hinton Coll. 



5. N. fodiens (?), Schr. Inner view of left ramus. Pleistocene, Dog Holes, 



Warton Crag. B.M., Jackson Collection. 



6. Sorex savini, Hinton. Outer view of left ramus. Upper Freshwater Bed, 



West Eunton. Savin Pr. Coll., No. 731.10. 



7. S. savini, Hinton. Inner view of left ramus ; la, posterior view of 



condyle. Upper Freshwater Bed, West Eunton. Hinton Coll. 



8. S. runtonensis, Hinton. Inner view of left ramus ; 8a, posterior view of 



condyle. Upper Freshwater Bed, West Eunton. Savin Pr. Coll., 

 No. 731.8. 



9. S. runtonensis, Hinton. Inner view of right ramus. Upper Freshwater 



Bed, West Eunton. Savin Pr. Coll., No. 636.15. 



10. Sorex sp. Inner view of left ramus ; 10a, posterior view of condyle. 



Pleistocene, Grays Thurrock. Hinton and Kennard Coll. 



11. S. kennardi, Hinton. Liner view of right ramus ; 11a, posterior view of 



condyle. Pleistocene, Ponders End. 



12. S. araneus, Linn. Inner view of right ramus ; 12a, posterior view of 



condyle. Pleistocene, Ightham Fissures. Hinton Coll. 



13. S. alpinus, Schinz. Inner view of left ramus ; 13a, posterior view 



of condyle. Eecent, Hatzeg, Transylvania. B.M., No. 3.11.8.12. 



14. S. minutus, Linn. Inner view of right ramus ; 14a, posterior view of 



condyle. Eecent, Clevedon, Somerset. Hinton Coll. 



II.— The Unconformable Relationship of the Lower Tertiaries 

 and Upper Cretaceous of JSTew Zealand. 



By Professor James Park, F.G.S. 



WITH the question of conformity or unconformity between the 

 Lower Tertiary and Upper Cretaceous, there is associated 

 a problem of great economic importance to New Zealand. The 



1 Hinton, Proc. Geol. Assoc, vol. xxi, p. 497, 1910. 



