398 RHINOCEROS. 



XIV. — Note on Molars of Rhinoceros Leptorhinus (E. Merckii, 

 Jager), in the Museum at Stuttgart. 



■Tune 18, 1861. 



Got casts of the three molars upon which Jager founded hisi?. Merckii 

 of Kirchberg. Dr. Fraas told me that the real history of the discovery 

 of these specimens is involved in obscurity. They were shown to Jager 



by the Prince of , residing near Kirchberg, and no additional 



specimens have turned up from that quarter. The two upper teeth are 

 the penultimate and last, evidently of the Grays Thurrock species, R. 

 leptorhinus (R. megarhinus). The original penultimate is in very fine 

 preservation. [Figures of two of these casts, executed by Mr. Dinkel, 

 will be found in Plate XXXII. figs. 1 and 2.— Ed.] 



XV. — Memo, of Ehinoceros Leptorhinus from the Forest-bed. 



August 25, 1863. 



In Mr. Gunn's collection there is a very fine specimen of the last pre- 

 molar, upper, right, of R. leptorhinus (JR. megarhinus), which shows the 

 characters perfectly and is a certain proof of R. megarhinus from the 

 Forest-bed. [The characters are described in detail and are shown to 

 differ from those of R. Etruscus. In a letter to M. Lartet, dated June 

 25, 18G3, Dr. F. also remarks: — 'The Rhinoceros leptorhinus of Grays 

 Thurrock occurs elsewhere in England in a peat-bed, which is beloiu 

 the loess, along with Elephas primigenius? — Ed.] 



XVI. — Note on Remains of Rhinoceros Leptorhinus (R. megar- 

 hinus), in Dr. Spcrrell's Collection at Belvedere. 



Sept. 30, 1863. 



There are four detached upper molars belonging to this species. One 

 is a last true molar (t.m. 3), right side, in the finest preservation, and 

 only slightly advanced in wear. In its transverse diameter from the 

 outer angle to the inner side barrels, it agrees very closely with the 

 Montpellier cast brought for comparison, but the width is considerably 

 less; it shows no indication of any rudimentary basal valley behind. 

 Another specimen of the same species is a penultimate upper left molar, 

 which agrees in the most surprising manner in form, size, stage of wear, 

 and hook of the posterior barrel with the R. Merckii cast from Stuttgart, 

 which was brought for comparison with it. Dr. Spurrell and Messrs. 

 Woodward and Prestwich were struck with the identity. With regard 

 to mineral character the four teeth of R. megarhinus present a tint 

 which seems to me to differ a little from that shown by the R. ticho- 

 rhinus (see page 401), while the latter have besides a rough and rolled 

 general character which is not so obvious in the former. On the other 

 hand, Prestwich considers that there are three teeth of the R. tichorhinus, 

 which, in mineral character, closely resemble the R. megarhinus, whilst 

 the slight difference in tint may arise from difference in the facility 

 with which the different species stain ! the matrix being in both cases 

 alike — sand with green grains of flint pebbles. He admits, however, 

 that it is a case for inquiry. 



