MOORE ABNORMAL SECONDARY DEPOSITS. 539 



littoral, growing between tide-marks or in shallow water within the 

 lowest ebb. This also appears to have been strictly the case with this 

 ancient representative of the genus, as it is found at Brocastle and 

 other places immediately skirting the Carboniferous Limestone coast- 

 line, or in shallow basins along its margin washed by the Liassic 

 seas. It is interesting to be able to connect this recent genus with 

 one of so remote an age, and at the same time to be able to realize 

 its growth under similar physical and zoological conditions. 



3. Serpijla STRANGTJLxiTA, Tcrq. PL XYI. fig. 32. 



Shell thick, elongated, curved, ornamented by numerous raised, 

 sharp, and regular annular rings, in the concave interspaces between 

 w^hich are fine encircling striae. 



M. Terquem mentions that this species is found in the lower beds 

 of the Lias at Zetrich, and also in the Middle Lias of the Moselle. 

 In like manner I possess it from the Lower Lias of Bridgend, 

 Stout's Hill, and Sontherndown, in some blocks of which are many 

 examples, and also from the Middle Lias of Camerton, where it is 

 not uncommon. 



4. Pollicipes RHOMBOID alis, spec. noY. PI. XYI. fig. 31. 



Scutum thick, convex, rhomboidal or subquadrate; under and 

 basal margin slightly rounded, divided by an obtuse carina, crossed 

 by strongly marked lines of growth ; surface with fine longitudinal 

 striae ; inner surface concave, with corresponding lines of grow^th 

 and longitudinal striae. The carina elongated, triangular, with 

 raised rounded parallel ridges. 



Many fragmentary specimens of this species occur in the clays 

 intervening betw^een the beds of Lias at Ewenny and at Langan. 

 The figured specimen is from the Sutton Stone of Shepton Mallet. 

 I have already described a species from the Rha^tic beds ; and the 

 genus is now recognized for the first time in the English Lias. 



5. Belemnites elongatus ?, Mill. 



This genus is represented in the Lower Lias at Sontherndown by 

 a very large phragmacone, the chambers of which measure 2| inches 

 in diameter. At first I was disposed to consider it an Ortlioceras, 

 and that the Dlsc'ma w^hich occupies the centre of one of the chambers 

 had passed into it through the siphuncular orifice. To settle this 

 point I had sections prepared ; but having been unable to detect the 

 presence of the siphuncle, it wall be safer to consider that it belongs to 

 Belemnites, though no Belcmnite of such large proportions has before 

 been found so low down. Belemnites acutus occurs rarely in the 

 same section. 



G. Crania liassica, spec, no v. 



Shell rather small, subquadrate, concave, wdth a rather elevated 

 obtuse vertex , shell-structure smooth ; surface with a very irregular 

 wrinkled aspect. 



Eragmcnts of this little Crania are not uncommo]! ; but I have 



