120 SHUFELDT. [VoL. III. 
CERTAIN MUSCLES OF THE FOREARM AND THIGH. 
Professor Garrod has already pointed out that the expansor 
secundariorum muscle is absent in the Strigid@ (Coll. Sci. Mem., 
p. 329), and I find Sfeotyto to be no exception to the rule. On 
the other hand, the patagial muscles of this family are not alluded 
to by him, and here offer several points of interest ; for although 
the origin and insertion of the tensor patagit longus are as we 
find them in nearly all ordinary birds, the same cannot be said 
of the tensor patagit brevis. This latter has its carneous portion 
at the shoulder much as we always find it, while its slender 
tendon in descending for insertion upon the extensor metacarpt 
vadialis longus of the antibrachium, bifurcates at about the mid- 
dle of its course, —the inner or proximal slip attaching itself 
as usual to the tendon of the aforesaid extensor of the forearm, 
and from the point of its insertion a tendon passes by a gentle 
curve over the outer aspect of the muscles of the antibrachium, 
towards the wrist, and gradually approaches the ends of the 
quills of the secondary feathers, into which it finally becomes 
inserted at a point about opposite the site of the middle and 
distal thirds of the ulna. To return to the remaining slip, the 
anterior one, of the bifurcated tendon of the tensor patagiz 
brevis, it too becomes inserted into the tendon of the extensor 
metacarpi radialis longus at a point situated about half a centi- 
metre beyond the insertion of the proximal slip, and in the same 
line. It will be interesting to compare this arrangement of the 
short tensor of the patagium in other Stvzgzda@, as well as in Rap- 
torial birds generally. Before writing out this account of it I 
very carefully examined the muscles in question in both limbs, 
and found them to agree exactly. 
Speotyto lacks the biceps slip to the patagium, as seems to be 
the case in all Owls. 
Passing to the muscles of the thigh, we find the femoro-caudal 
present, and for a representative of this family, rather large ; 
the ambiens, the tensor fasciz, the semitendinosus and its acces- 
sory slip, and the accessory femoro-caudal are all absent. This 
arrangement agrees with the several species of Owls examined 
by Garrod, though that distinguished ornithotomist did not ap- 
parently examine the present bird, while he did investigate this 
point in at least three forms of Azhene. 
