1885.] TROCHILID^, CAl-RIMULGID^, AND CYPSELID-E. 915 



EXPLANATION OF THE PLATES. 



[All the figures in the Plates were drawn by the author 

 from the spediucns.] 



Plate LVIII. 

 Pig. L Skull of Trochilus akxcuidri, superior aspect, with mandible removed, 

 X 4. P^nx. pi-euiaxillary ; a. an o?siflcatiou from the same ; 7?urp', 

 maxillo-palatiiie ; Iffi, nasal ; I, lacrymal. 



2. Eight lateral view of Trochilus alcxandri, X 4, same ispeeimen ; 



q, quadrate; ]'o, vomer; jsi/J, pars plana; and other letters as in 

 fig. 1. 



3. Under view of the skull of Trochilus ah^raiidri, X 4, same specimen, 



mandible removed. Pp", pterygoid ; P/, palatine ; and other letters 

 as before. 



Plate LIX. 



Fig. 1. Eight lateral view of the skull of Chordediles acutipennis fcxensis x 2; 

 letters as in Plate LVIII. ' 



2. Inferior view of mandible of the same specimen as in &^. I. Life- 



size. °' 



3. Superior aspect of the skull of Chordediles aouHpennis texensis, X 2; 



same specimen as before; mandible removed. Letters have the 

 same meaning. 



4. Inferior view of the skull of Chordediles acutipcmns texcmis. X 2- 



same specimen as in fig. 1 ; mandible removed ; /i.2]t, basisphenoid! 

 Other letters as before. 



Plate LX. 

 Fig. 1. Pectoral aspect of sternum of Pcmj/ptila saxccHlis, X 2. 



2. Shoukler-girdJe of I'lon/pfila scixatilis, same spei'imen, X 2; cl, cla- 

 vicle ; ^, the ledge it develops on the outer side of its head for the 

 coracoid; c, coracoid ; s, scapula; ;•' and c^', .same as ^ and c^, but 

 the bone they refer to is a front view of the fiircitla, shown in 'side 

 view at cl. 



3. Pectoral aspect of sternum of Trochilus olexandri, x 4. 



4. Eight lateral view of the sternum of Panyptilu saxatilis, x 2, same 



specimen as shown in fig. 1. 



5. Anterior aspect of right coracoid of Trochilus alcxandri, X 4 • same 



specimen as in Plate I. Compare this bone with the Swift's coracoid 

 shown in fig. 2. 



6. Eight lateral view of sternum of Trochilus alcxandri, x 4 ; same speci- 



men as in Plate I. Compare this sternum with the very differently 

 formed one from a Swift in fiff. 4. j j 



Plate LXI. 



Fig. 1. Left pectoral limb of Chordediles acuripcnnis fcxensis. life size, palmar 



aspect ; same specimen as shown in Plate II. h, humerus : u, ulna ■ 



r, radius; re, radiale; !;c, nlnare ; ;j, pollcx ; «', index metacarpal- 



I and i'", its phalanges; m', middle inetaoarpal; m", its digital 



joint. =" 



2. Shoulder-girdle and sternum, from the same specimen as in fio-. 1 left 



three-quartering view ; life-size. The several bones in situ ° 



3. Left pectoral limb of Trochilus aleacmdri, x 4 ; from the same speci- 



men as in Plate LVIIL Letters have the same significance as those 

 in fig. 1, with s, s'. s'\ and s'", sesamoids , /, process of inde.K phalanx 



4. Left pectoral limb of Paw/ptila sa.vafiii.<, x 2 ; from the saiiie speci- 



men used m former figures ; botli these limbs arc, with the e.'cception 

 of radius and ulna, seen upon anconal aspect, the excepted bones 

 being rotated nearly to the radial view. Letters have the same 

 nifioance as those in figs. 1 & 3. 



: S12- 



