(l) 26 rahruiitoh'Kj'nt Sinica Sfr. B 



Horizon and 'Locality: A nearly perfect specimen Avas obtained liy Messrs. 

 Morris, Barbour and Terrill in the iij^per quarry Ijods of the Machiakou or Actinoccras 

 limestone at Tangshan in the Xaiping coal basin eastern Cbibli province. This specimen 

 was associated in the same slab with Saljiiiigostoiiia tcrriUi and Jrtinocrios tuni. Another 

 specimen, olitained by Mr. Geo. B. Barl)Our, from tlie same locality and horizon, is 

 associated with LopJimiiird indcheUifonnix and Pagodixpini dcnrkhvii. These specimens are 

 deposited in tlie Museum of the Survey. The specific name is given in lienor of Frederick 

 K. Morris, Professor of Geology in Peivang University Tientsin, in recognition of his 

 active interest in the stratigrnpbic and structural ]irolilcins of tliis country. 



Lophospira pulchelliformis Giabau (sp. nov.) 



Plate ]II Figs. 3, 4. 



Spire elevated, the ajwcal angle atiout Gd", whorls embracing only to the lower 

 carina which is strong and occupies the middle of the body of the \\-horl. 



Shoulder flat or very gent]}' concave, the shoulder angle about 90°, and marked 

 l)y a rounded, Avell defined, peripheral band which occupies the apex of the angle, and 

 is defined by an impressed line on either side. ToM'er part of whorl divided into two parts 

 by the strong body carina -which is njunded and nearly equal in strength to the shoulder 

 angle. Tjiis carina is partly shown just above the suture in the earlier vliorls. That part 

 of the -whorl l)et\ve(/n the shoulder angle and the lower carina is concave, while that below 

 tlie carina is gently concave near the carina but ])ecomes gently convex towards the 

 uml)ilicus, which is narrow. Lines of growth deflected backwards on the periphery, where 

 they indicate a notch of modemte depth. 



Tliis species is the Chinese analogue of the North American L. [mklieUa Ulrich 

 and Scotield, which is found in the lUack River horizon of tlie central States. The apical 

 angle of our species is seunewhat larger, being Ooo as against doo to oIlo in the American 

 form. The lower carina in our s];ecies is also S(.)mewhat lower down on the whorl than in 

 the American form. Nevertheless the two are very much alike. 



Horizon and Looaijtii^s: In the upper part of the Actinoccras or Machiakou 

 limestone ;it Tangshan, several specimens, collected ly Survt'y expedition; also one from 

 tlie same section collected bv Geei. B. Barbour. 



