40 
Transactions Texas Academy of Science. 
Cope, Edward D. * 
cies found in Texas. Mastodon serridens, iCope, p. 196. Tetrahelodon ? 
serridens, Coipe, p. 205.. Fig. 8 gives two views of ? first molar. “Typical 
specimen from ? Pliocene of Texas.’’ 
“Falconer regarded the true elephant of Texas as a distinct species, 
which he named E. columbi. He distinguished it by the coarse plates of the 
enamel, and by the wide lower jaw, with curved rami, and short sym- 
physis. * * I have in my museum an entire skull, lacking the lower 
jaw (Plate XIV), from the ‘orange sand’ of the city of Dallas, in North- 
eastern Texas, which only differs in form from that of the E. primigenius 
as figured by Blumenbach and Cuvier in the shorter and wider premaxil- 
lary region.” Pp. 207-208. Other comparisons follow. A figure of the 
Dallas specimen is given on p. 208. 
41. 
On the Skull of the Equus excelsus Leidy, from the Equus Bed 
of Texas. 
Amer. ISTaturalist, Vol. XXV, pp. 912-913. Oct., 1891. 
“I have received from my valued correspondent, William Taylor, a skull 
of the Equus excelsus, which is of much interest as the first that has come 
to light in the United States. It lacks only the posterior and inferior 
walls of the brain case, and the premaxillary region was detached in such 
a way that its length is not absolutely certain, though contact of the 
adherent matrix was found. This skull shows that the Equus excelsus 
is intermediate in characters between the horse and the quagga and allied 
species, and possesses some Hippidium characters in addition. The resem- 
blance is, however, greater to the quagga.” 
Comparison with the quagga. The skull is- that of an adult female. 
Frontal bone crushed as if with a hammer. 'Stone hammer found in the 
same bed. 
42. 
A contribution to a Knowledge of the Fauna of the Blanco 'Beds 
of Texas. 
Proceedings of the Acad, of Xaf. Sciences, Phila., Pt. II, pp. 
226-229. Apr.-Oct., 1892. 
“Prof. E. T. Dumble, iState Greologist of Texas, appointed Prof. W. F. 
Cummins to conduct the survey of the northwestern district of the State, 
and in pursuance of this order the latter gentleman is now examining the 
mesozoic and cenozoic beds which compose and underlie the Staked Plains. 
I accompanied this party in the capacity uf paleontologist, kaving already 
determined the vertebrate fossils collected by the Survey’s expeditions of 
last year (see Proceedings of the 'American Philosophical Society, first 
No., for 1892). 
“The superficial formation of the Staked Plains has been determined by 
Prof. R. T. Hill to be of late cenozoic age, and the term Blanco Beds has 
been applied to it by Prof. Cummins. The examination of the vertebrate 
fossils from it led me to state [loo. cit.) that in age the Blanco formation 
intervenes' between the Loup Fork below and the Equus beds above, in the 
series. This conclusion was based chiefly on the fact of the presence of 
