256 Proceedings of the lloyal Physical Society, 



among Mr Bruce's specimens, but all of them are mere 

 fracrments. 



7. Crinoidal Stems. 



Some of the rock • fragments contain many pieces of 

 Crinoidal stems, and are doubtless such as were alluded to 

 by Morris and Sharpe in their early description. These 

 stems are peculiar and characteristic, the ossicles being 

 marked by fine rings of fimbriated fringes. Similar stems 

 occur in the Bokkeveld beds, and are figured by Sharpe on 

 his plate xxv. fig. 24. 



8. Trilohites. 



There are two fragments of Trilobite pleurae, characterised 

 by exceedingly coarse pitting, but their generic position 

 remains doubtful. 



Slab of Bock from near Hope Point, West Falkland, 

 containing nnmerous imi^ressions of Crinoid Stems. 



Besides the fossils from Port Louis South, Mr Bruce sent 

 me another specimen from near Hope Point, West Falkland, 

 which was presented by Mr W. Felton. This is a quadrate 

 slab of hard, sandy rock, containing very many impressions 

 of Crinoid stems, the fossils themselves having been entirely 

 dissolved, and leaving only their casts. The slab is about 

 15 inches long and wide, and about IJ inch thick. The 

 Crinoid stems had been broken into small pieces before being 

 fossilised, the largest pieces being not more than 2 inches 

 long, with a diameter of perhaps one- third of an inch. The 

 number of ossicles in the longest pieces being eight or nine, 

 the length of each ossicle is rather less than its diameter. 

 The exterior of the stem is cylindrical in most cases, but 

 some of the impressions show numerous pittings, which may 

 represent ornamentation, but are more probably the bases of 

 cirri. The casts of the ends of the ossicles show very 



