Fig. 1. Dissection of right elbow of Prion desolatus, to show the disposition of the 
tensor patagii muscles, as seen from above. 
Fig. 2. The same in Hstrelata brevirostis. 
Fig. 3. The same in Diomedea exulans. An arrow is passed between the twin 
tendons of origin of the superficial part of the extensor metacarpi radialis longior. 
Fig. 4. The same in Cistrelata lessons. 
Fig. 5. The same in Ossifraga gigantea. 
Fig. 6. The same in Pelecanoides urinatrixv. H. Humerus. f&. Radius. 
b. Biceps muscle. tpl. Tensor patagit longus. t.p.b. Tensor patagia brevis. 
e.m,e.m’. Superficial and deep bellies of extensor metacarpi radialis longior. e.m.* 
Inner of twin tendons of origin of its superficial belly. 6.s. (in fig. 3). Biceps slip. 
f. Fasciculus of patagial tendons continued on to ulnar fascia. a,a’. Ossicles developed 
at origin of the extensor metacarpi radialis longior. t.p.’ (in fig. 5). Special slip from 
patagial tendons to deep belly of extensor metacarpr radialis longior. 
Fig. 7. Dissection of right wing of Majaqueus equinoctialis, to show origin and 
general disposition of the tensor patagiw muscles. Lettering as above; also tp. 
Common belly of tensor patagw longus and brevis. t.p.l’. Cushion of elastic tissue, 
developed in the tendon of the tensor patagw longus (t.p.l.) at its origin from the © 
humerus. e. Elastic pad, developed in the marginal tendon of tensor patagw longus, 
opposite the elbow. qd. Deltoid muscle. JU. Latissimusdorsi (insertion). n. Cir- 
cumflex nerve. 
