42 FLORIDA GEOLOGICAL SURVEY-NINTH ANNUAL REPORT. 
EXPLANATION OF PLATES. 
PLATE I. 
(Both plates are reproduced from photographs of the actual specimens by 
Dr. R. W. Shufeldt. All the figures are natural size.) 
Dorsal aspect of the left ulna of Cathartes aura. No. 17872, Coll. 
U. S. National Museum. 
Dorsal aspect of the left ulna of Cathartes aura (fossil). From 
Stratum No. 3, Vero, Fla. (Fla. Geol. Surv., 1916). Pleistocene. 
Cat. No. 6783 (2 pieces). Imperfect. 
Anconal aspect of the right humerus of Querquedula discors. No. 
17704, Coll. U. S. National Museum. 
Anconal aspect of the right humerus of Querquedula doridana, sp. n.,v. 
Shuf. From Stratum No. 2, Vero, Fla. (Fla. State Geol. Surv., 1916). 
Pleistocene. Very nearly perfect. Cat. No. 7550. 
(No. 6774). The distal two-thirds of the left tarso-metatarsus (im¬ 
perfect) of some heron ( Ardea ), larger than Nycticorax n. naevius; 
anterior view. Not quite perfect enough for exact reference. 
Stratum No. 3, Vero, Fla. Fla. State Geol. Surv., 1916). Pleistocene. 
Dorsal aspect of a large, elongate vertebra (9) from the skeleton of 
the neck of some sort of a heron; imperfect. Leading section of the 
chain. Comes near Herodia egretta. From Stratum No. 3, Vero, Fia. 
(Fla. State Geol. Surv., 1916). Pleistocene. 
Distal half, anterior view, of the right tibio-tarsus of an adult speci¬ 
men of Tyto pratincola (fossil). Vero, Florida. No. 6934. (Fla. State 
Geol. Surv., 1916). Compare with figure 8 of this plate. 
Right tibio-tarsus and fibula of a specimen of Tyto pratincola; anterior 
view. Nat. size. (Spec. 19636, Coll. U. S. Nat. Mus.) Compare with 
the fossil specimen shown in Fig. 7 of this plate. 
Figs. 9 and 10. Vertebrae of some small or average-sized wader (bird). They 
are from the posterior region of the neck and nearly perfect. Fig. 9 
is seen on ventral view, and Fig. 10 upon dorsal aspect. Vero, Florida, 
Pleistocene. (Fla. State Geol. Surv., 1916. Stratum No. 3.) 
Fig. 11. From the same lot as the last; same date and Stratum. Distal extrem¬ 
ity of a right tarso-metatarsus (bird). Not identified. Perfect as far 
as it goes. It probably belonged to some sort of an average-sized 
wader, perhaps after the heron order, or a near ally. Anterior surface. 
Fig. 12. No. 6773 is the lower two-thirds of the right tibio-tai^sus of some 
medium-sized water bird; nearly perfect as far as it goes. Anterior 
view. (Orig. Number 57 ?) Vero, Florida. Pleistocene. Stratum 
No. 3. (Fla. State Geol. Surv., 1916). It may possibly have 
belonged to a gull, somewhat larger than Larus atricilla and in the same 
genus. (Compare with No. 19592, Coll. U. S. Nat. Mus., L. atricilla .) 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5 - 
Fig. 6. 
Fig. 7. 
Fig. 8. 
