108 THE NAUTILUS. 
PUBLICATIONS RECEIVED. 
THe Lower CRETACEOUS GRYPH2ZAS OF THE TEXAS REGION. By 
Ropert T. Hit and T. WAYLAND VAUGHAN. (Bull. 151, U.S. 
Geol. Survey.) In the introduction to this work there is an ac- 
count of the great controversy that arose between Prof. Jules Mar- 
cou and other American paleontologists “concerning the species 
Gryphea pitcher7, Morton, and the formation in which it was 
found.” 
* By the erroneous impression given to Dr. Roemer, th rough the 
careless preservation of original type specimens, the first confusion 
of Morton’s G, pitcher? with other species of Gryphe@a was started, 
and the nucleus was created for an almost endless misrepresentation 
and confusion of forms, which has so permeated all the literature 
of the country that the task of correcting it at times seemed almost 
impossible.” 
The variationsof Gryphea corrugata, Say 1823 (G. pitcherz, Mor- 
ton, 1834), called by Marcou in 1851 G@. fuewmncar//, are now known 
to be Lower Cretaceous. 
“Mr. Stanton’s (Bull 106, U. S. Geol. Sur., pp 60-62), recent 
studies of Newberryand Schiel’s Gryph@a pitcher/ trom the Upper 
Cretaceous of New Mexico and Utah shows it to bea distinct spe- 
cies (G. Newberry/, Stan.), and removes the lasi vestige of G. p7tch 
erZ from the Upper Cretaceous. 
“A review and classification of the fossil Ostreidz of the Texas re- 
gion is given, after which is a historical statement of the discovery 
of the forms referred to, G. pricher?, Mort., and the geographical 
and stratigraphical distribution of the Lower Cretaceous Gry- 
pheeas.” 
A description of species follows  G. ward7is described as new, 
and tor G. p/tcher/, Blake (not Morton) the name of G. marcou? is 
proposed. The other forms that have been referred to, G prtcher/, 
etc., by various authors, are here arranged under four species: G. 
corrugata, Say: G. navia, Hall; G. washitaensis, Hill,and G. 
mucronata, Gabb. The work contains 66 pp. of text and is pro- 
fusely illustrated by 35 plates. 
