41 
from the posterior part of the tibia and the interosseous space; the 
tendon of the biceps perforates its upper part in passing to its in- 
sertion. It ends in a strong flat tendon at the lower third of the 
leg, which tendon runs through a particular sheath at the back part 
of the tarsal pulley, becomes thickened and expanded as it advances 
forwards beneath the tarsus, receives a strong accessorial tendon 
from the muscle which bends the innermost toe, and finally divides 
into three strong perforating tendons, which bend the last joints of 
the three long toes. 
In the outer, or fourth toe, both the perforans and perforaius ten- 
dons are confined by a double annular ligament; the exterior one 
being continued from the adjoining toe, the inner and stronger one 
from the sides of the proximal phalanx of the outer toe. 
The second and third toes have two perforated tendons; one in- 
serted into the sides of first, and the other into sides of second 
phalanx. 
Mr. Gould then proceeded to characterize a new species of Pera- 
meles from Port Essington,-and a new species of Dasyurus from the 
same locality. 
PERAMELES MACROURA. Per. corpore supra nigro et flavescenti- 
albo penicillato, infra sordidé albo; pilis rigidis obsito ; caudd 
pilis parvulis parce tectd, longitudine dimidio corporis equante ; 
supra nigrd, infra fuscescenti-albd ; auribus mediocribus. 
unc. lin. 
Longitudo ab apice rostri ad caude basin.... 16 3 
COMMER MCN alveiaarie er Sor OS oi 7 3 
ab apice rostri ad basin auris .... 3 4 
— tarsi digitorumque........ 02024 ayer 
GUMIRI Ls OLR Se swh.j Joven Ea ota bad 
Hab. Port Essington. 
The P. macroura greatly resembles the P. nasuta, having the same 
elongated form of head, character of fur and colouring, but is distin- 
guishable by its longer tail. 
Dasyurus HALLucaTus. Das. supra flavescenti-fuscus, nigro- 
penicillatus, maculis albis ornatus ; corpore infra albo ; cauda im- 
maculatd ad apicem nigrd. 
une. lin. 
Longitudo ab apice rostri ad caude basin... 11 0 
CREE 0 eS tok ais Lael ten 9570 
wa ab apice rostri ad basin auris .... 2 6 
tarsi digitorumque.............. 1 1S 
G08 g568. Fee § Incid ono-yiae oi) 140 
Hab. Port Essington. 
‘This species most nearly resembles the Dasyurus Geoffroii, but is 
of a smaller size, and has the thumb of the hind-foot more developed. 
Accompanying the specimen from which the above description is 
taken was another individual, which differs only in having the 
ground-colour of the body nearly black ; hence it would appear that 
the present species is subject to the same kind of variation in its 
