The fnlohite^i nf the Bokkereld Beds. 21o 



ing somewhat in front ; it is distinctly separated from the cheeks 

 and from the frontal margin ; three glabellar furrows on each side, 

 all of which are curved backwards. The cheeks are triangular, very 

 tumid, curved downwards. Neck furrow strong ; the neck segment 

 bears some small tubercles. 



The tail forms a long triangle, is extremely convex, and ends in a 

 sharp point ; it is, in fact, half of a cone. In one specimen it is 

 covered by a thick, finely granulate crust which shows but very 

 faint traces of the ribs on the axis and lateral lobes, but on the cast 

 the ribs are distinct. The axis is broad and divided into some 

 thirteen segments, some of which bear tubercles, but the number 

 and arrangement of the tubercles seems to vary considerably. The 

 lateral lobes are bent downwards and show six rather faintly marked 

 ribs, and in one specimen the third rib on each side bears a small 

 tubercle at its commencement. 



HonvihmntHS hcrsclicli Miui h ( ittti S liter), Trans. Gcol. Sou., aer. 2, vol. vii., 

 pi WIN , hg l'( (reduced). 



Remarks. — Freeh has figured a species from Cape Colony which 

 he believes to be distinct from H. hcrschcli, and to which he has 

 given the name of H. pcrarmatas. Unfortunately he supplies no 

 description, and merely remarks that it is larger and possesses 

 more numerous tubercles than H. hcrschcli, irregularly disposed. 

 He makes no reference to Salter's description, and in his comparison 

 appears to rely solely upon the figure of the thorax and tail given by 

 Murchison. The head of Freeh's figure agrees exactly, so far as it 

 is complete, with that figured by Salter ; and as the number of 

 tubercles seems to vary considerably in different individuals, it 

 hardly forms a satisfactory specific character. Salter's fig. 4 seems 

 to be almost as tuberculate as Freeh's figure. 



