13 The left pectoral fin was rared and I dissected it with great care, cutting away the cartilage from the tinnuute phalanges at the tips of the digits. I am absolutely certain that the formula below is correct. Left Pectoral II III IV I (I took as the 2nd digit the outside) 4 6 5' 2 one on the region [illegible] There were five carpal ossifications in this fin - 3 in the proximal row were about to an inch and half in diameter & were placed in a parallel line with the ends of the radius & ulna. The two carpals in the distal row were small. The right fin presented the same number & position of the ossifications. Left fin Length of radius (median straight) = 46.5- Breadth " (distally ) = 10.5 Length ulna (median ) = 45-3 Breadth " (distally ) = 9.3 Depth dorsavan " = 6 Length of humerus (median") = 27 There were either 12 or 13 ribs, I could not be sure which, but I think 14 pairs (N.B. on no 4 see where I find 13 progs ribs & this is probably the normal number) (Measuments see page 14)