104. BRITISH BELEMNITES. 
Locality. Yeovil, Inferior Oolite ; specimen in the Oxford Museum. 
Observations. 'This fossil differs from B. apiciconus chiefly by its general depression 
and smaller diameter when specimens of the same length are compared. It agrees in 
general figure with B. Bessinus, as given by D’Orbigny, and as represented at Stones- 
field, but the groove does not reach so far backward. It may be supposed to be the 
connecting link between the two species named. 
BELEMNITES ANOMALUS, Péillips. (Diagram No. 26.) 
DIAGRAM 26. 
Reference. Belemnites anomalus, Phillips. ‘Geology of Yorkshire,’ 
) vol. i, p. 166 (2nd edition, 1835). 
Guarp. Elongate cylindrical in the post-alveolar region, tapering to a 
long conical point. Ventral surface grooved in the alveolar and post-alveolar, 
but not in the apicial region, towards which the groove, previously narrow, 
grows shallower and wider. 
Transverse section somewhat elliptical in the alveolar region, by reason of 
the ventral thickening of the guard; nearly circular in the post-alveolar 
region. 
Greatest length observed 2°75 inches, of which the apicial line is 2:0; 
the greatest diameter 0°34. 
Locality. White Nab, near Scarborough, in the Grey Limestone. Speci- 
mens in the Cabinets of Wr. James Cook, Mr. Bean, and the Author. 
Observations. ‘The greater proportionate length of the axis of the guard 
is the most marked differential character when this is compared with 
B. apiciconus. 
On toe BeLemnires or SToONESFIELD, Pu. XXVI. 
Lhwyd, in the ‘ Lithophylacium Britannicum,’ 1699, refers to “ Stonesfield ” for three 
specimens of Belemnites, all marked by a ventral furrow. 
“1677. Belemnites major canaliculatus, sive aqualiculo per mediam longitudinem 
insignitus. E fodinis Stunsfieldiensibus. 
“1705. Belemnites ari-pistillum referens, canaliculatus. EH lapidicina. Stunsfieldi- 
ensi” (figured in Lhwyd, tab. 25, fig. 1705, and copied in Diagram 27, below). 
DIAGRAM 27. 
