Annals of the Transvaal Museum. 
69 
An old from Boror measures “H. and B. 190, tail 171, hind foot 54, 
ear 32” ; skull: gr. leng. 53*2, bas. leng. 46*6, zyg. br. 27*9, dent. ser. 
28*3, mol. ser. 18*2, br. at m 1 . 17*9. 
44. Petrodromus Beircie, spec. nov. 
1 ad. (type), 1 juv. $, and 3 without skulls, Zimbiti, Beira. 
This species differs from the foregoing, which it resembles in colour, 
in having longer feet, a larger skull, and wide diastema between all the 
teeth from the canine to the third premolar in the lower jaw ; in the 
maxilla the teeth are also somewhat more widely separated than in 
tetradactylus , especially P2 and P3. The skull of the type and an adult 
of tetradactylus of the same age measure, respectively : — 
Gr. leng. Bas. leng. Zyg.br. Dent. Mol. Br. Mol. 
Beircie ... 55*4 49*5 28*6 29-2 18*2 18 
tetradactylus ... 50*8 45 26 27*5 17 18 
Unfortunately, none of the specimens have been measured in the 
flesh ; but it is clear from measurements of the hind feet taken from the 
skins that those from Beira are longer, the measurements being 55-57 as 
against 48-51 (50-54 in flesh). The cotype, in which the skull is not 
complete, measures 54 in the hind foot and 17 ’6 across the molars, 
although it is very young, the hindmost molar being still absent. 
It is clear from Peters’ figure of the skull of tetradactylus that he took 
a Boror specimen as the type, unless, of course, those taken at Tette were 
similar; but he states that he found it to be more common in Boror, 
probably at the same place on the Liquari River where the specimens of 
tetradactylus above mentioned were taken, and it seems most likely that 
he chose the type from the larger series. 
45. Petrodromus occidentalis, spec. nov. 
1 <J, 2 5, N.W. Rhodesia (C. Wilde). 
This species apparently agrees with the description of P. venustus , 
Thos., as regards colour, but has a longer tail, hind foot, and ear. In 
regard to the teeth, their position seems to be similar to those of tetra- 
dactylus , but the inner cusp of P2 is missing ; this character is, however, 
not to be relied on, as the cusp apparently wears down with advancing age. 
Type : Young adult $, T.M. No. 677, ex coll. C. Wilde, N.W. Rhodesia, 
11.9.07. “H. and B. 205, tail 180, hind foot 58 (in skin 54), ear 35”; 
skull: gr. leng. 53*4, bas. leng. 47*1, zyg. br. 27*8, dental ser. 28, molar 
ser. 17*6, breadth at molars 18 mm. 
46. Petrodromus Schwctnni , Thos. and Wr. 
1 2, Coguno, Inhambane, P.E. Afr. (Grant). 
The peculiar knobs on the bristles of the under surface of the tail of: 
this species are probably the result of grass fires having scorched the 
ground over which the animals are forced to run, and thus the bristles 
have become burnt and formed into peculiar knobs. It is significant that 
this specimen was taken about the time grass fires are generally found to 
be in progress in that belt of country. 
47. Rhynchocyon Cirnei, Ptrs. 
1 young ad. 1 §, Boror, P.E. Afr. (Kirby and Roberts). 
These are topo-types of the species, but are not as large as the type, 
which was probably very old. 
48. Myosorex varius , Smuts. 
4, Knysna (Rex). 
