Mr. J. W. Judd on the Strata af the Lincolnshire Wolds, 71 



England, and that it was very inferior to those animals in point of 

 number. Its nearest living analogue is the bicorn Rhinoceros of 

 Sumatra. The dentition both of the tichorhine and leptorhine 

 species agrees remarkably in one point, that it is more specialized, or, 

 in other words, more closely allied to that of living forms than the 

 megarhine, — a fact that seems to the author to imply that both came 

 into being after the less specialized R. megarhinus had ceased to 

 exist. 



3. " On the strata which form the base of the Lincolnshire 

 Wolds." By John W. Judd, Esq., F.G.S. 



After giving a sketch of the previous very scanty literature of the 

 subject, the author proceeded to describe the outcrop and the various 

 outliers and inliers of the " Hunstanton Red Limestone," which in 

 this district serves as a well-marked datum line in the series of 

 strata. It was shown that this bed, while maintaining much uni- 

 formity of lithological and palseontological characters, undergoes a 

 regular attenuation southwards, being 30 ft. thick at Speeton, 14 ft. 

 and upwards in Lincolnshire, and 4 ft. at Hunstanton, thinning out 

 entirely about 12 miles south of the last-mentioned place. 



In the second part of the paper a general sketch of the Chalk 

 formation in Lincolnshire was followed by detailed descriptions of a 

 number of red beds, previously confounded with the Hunstanton 

 Limestone, but now shown to be intercalated in the series of the 

 Lower Chalk. A typical section made at Louth was then com- 

 pared with the grand natural section at Speeton Cliffs, as described 

 by the Rev. T. Wiltshire. 



The extensive deposits underlying the Hunstanston limestone 

 were described as follows: — 1st, ferruginous sands (unfossiliferous) ; 

 2nd, a series of limestones, sandstones, and clays, containing a large 

 and interesting suite of fossils with an undoubted Neocomian facies, 

 but presenting greater affinities to the faunas of certain conti- 

 nental deposits than to that of the English Lower Greensand ; 

 for this formation the provisional name of " the Tealby Series" was 

 proposed ; 3rd, another and thicker series of sands. In its north- 

 ward development, the Tealby series was described as furnishing 

 beds of ironstone (often of Oolitic structure and of considerable 

 economic value), and finally as graduating into the upper part of the 

 Speeton clay ; while in tracing it southwards it is found to become 

 almost wholly arenaceous. 



The author gave lists of the fossils of the different beds, and 

 described the numerous faults &c. of the district, which he illustrated 

 by a map and numerous sections. He concluded with some remarks 

 on the age of the various beds, and on the causes of the remarkable 

 red colour of some of them. 



An appendix, containing remarks on some of the fossils, showed 

 that the following well-known species of Sowerby, Ammonites pli- 

 comphalus, Pecten cinctus, and Lucina crassa, are Neocomian, and 

 not Jurassic forms as has hitherto been supposed. 



