1880. ] Geography and Travels. 223 
of the American genus Cambarus. The species may be cal'ed, 
therefore, Cambarus primevus.—A. S. Packard, Fr. 
ON THE SAUROPTERYGIA OF BouLoGNe-sur-MeErR.—Dr. H. E. 
Sauvage has recently published an interesting memoir on the 
above subject, including in it many general remarks on the affini- 
ties and contents of the order Sauropterygia. He uses the results 
of the latest investigations on the subject, referring especially to 
those of Seeley. He describes several species heretofore very 
little known, and adds a number of new ones to Scientific Litera- 
ture. Those which Dr. Sauvage finds in the Upper Jurassic beds 
of the Boulonnais are: Pliosaurus gamma Ow.; P. grandis Ow. ; 
P. suprajurensis Sauv.; Polytychoaon archiaci E. E. Desl.; Ples- 
tosaurus carinatus Ow.; P. phillipsi Sauvg.; P. morinicus Sauvg. ; 
P. infraplanus Phil.; P. plicatus Phil.; P. ellpsospondylus Ow. ; 
Colymbosaurus dutertret Sauvg.; Mureuosaurus manselt Hulke; 
Polycotylus suprajurensis Sauvg. 
at the middle, is equal to the anteroposterior diameter. The 
crescents, and especially the inner ones, are correspondingly nar- 
row e enamel borders are simple, there being’ only a few 
notches on the adjacent faces of the lakes. One loop projects 
from the inner enamel border, almost reaching the anterior inner 
column. Cement abundant. Diameters of second premolar: 
anteroposterior, m. .035; transverse behind .021; height o 
Crown .035. Diameters of a superior molar : anteroposterior, O27; 
transverse, do., including external ridge, .027 ; longitudinal ex- 
ternally, .o45. The species of the genus heretofore described 
from the United States ( Æ. pernix and H. robustus), are represented _ 
as having teeth with short crowns and long fangs, and of materi- - 
ally smaller size. The species may be called Æ. spectans. The 
teeth are about the size of those of the quagga—E. D. Cope. 
GEOGRAPHY AND TRAVELS.' 
UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF 
THE TERRITORIES. WORK OF 1877-8, PRIMARY TRIANGULATION AND 
p ELLowsroxe Park Maps.—Among the posthumous works of 
Dr. F. V, Hayden’s Survey of the Territories, there have recently = 
, 1 Edited by Ertis H. YARNALL, Philadelphia. o 
