272 | ~ General Notes, [ March, 
the stone ; the next following joints are seen from the left side, the 
two last obliquely from that side and from below. In the Scotch 
alezophonus described by Mr. Peach,! which is turned upside 
down, we consequently see that the basal joints of the tail turn 
their ventral part upward and that the last joints are viewed 
obliquely from above, As to Proscorpius the impression one 
receives from the figures is, that the tail shows the dorsal surface 
of at least three of the four joints still preserved, just as would be 
expected. Mr. Whitfield says, however, that it shows, of the 
upper or dorsal surface, but “ the inside of the ventral or lower 
field’s specimen. 
As the walking limbs of Proscorpius osbornei are in a very bad 
state of preservation, it is no doubt difficult to decide with certainty 
? Ancient air-breathers, in Nature, Vol. XXI, No. 796, p. 297. Jan. 29, 1885+ 
? So it appears at least on pl. 20, fig. 1, in Mr. Whitfield’s paper. 
