652 ON THE ANATOMY OF FHCENICOPTERUS, [DeC. 18, 



place Pkcenicopterus in the same sort of relation to the typical 

 Pelargomorphs, thus : — 



Palamedeidce. 



Typical Chenomorphce. 



Dysporomorphce. 



\P7ioenicopterus. 



Pelargomorphce. 



a relationship which is exactly expressed by the term Amphimorphae 

 of Professor Huxley, 



EXPLANATION OF PLATES LLS. AND LX. 



Plate LIX. 

 Fig. 1. ^ho^^\Aer-mMie\es oi Cieonia maguari ; outer view. 



2. Hhi^ oi Phxniccfptcrus ; outer side. 



3. Thigh of LeptopHhis argala ; outer side. 



4. Calf-muscles of Pkcenicopterus. 



Plate LX, 



Fig. 5. Calf muscles of Leptoptilus. 



6. Arm-muscles of Leptoptilus, showing arrangement of tensores 



patagii. 



7. Dissection of peetoralis major of Phoenicopterus. 



8. Tensor patagu of Duck. 



Complete list of reference-letters: — 

 An. Anconeous longus. 

 a.s.t. Accessory semitendinosus. 

 Bi. Biceps. 



bi'. Eeflected tendon of biceps-sling. 

 C.J.J, c.b..-^ Coracobraehialis. 

 D.I., B.E. Internal and external deltoids. 

 Fl.perf. Flexor perforatus. 

 Fl. prof. Flexor profundus. 

 Fl.p.p. Flexor perforatus et perforans. 

 g, g^. Gastrocnemius. 



l.d. Latissimus dorsi ; Id,, Id.,, its anterior and posterior divisiona. 

 P.M.i, P.M.^ Divisions of great pectoral. 

 P. II. Second pectoral. 

 s.t. Semitendinosus. 

 s.m. Semimembranosus. 

 t.p.L, t.p.b. Tensores patagii. 

 t.f. Tensor fasciae. 



