68 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 61. 



zoarium. The tubes are cylindrical and proceed from a ramification 

 opposite a preceding pinnule. At the center there is a longitudinal 

 axial tube. 



Affinities. — D'Orbigny's figure is quite exact and should cause no 

 confusion, so it is without reason that Pergens and Gregory have 

 identified this species with 7\ suhpi?inata D'Orbigny, 1854. It differs 

 from it in its greater zoarial dimensions, in its smaller pinnules pro- 

 jecting little from the zoarial trunk and in its nematopores obliquely 

 arranged (and not parallel) to the zoarial axis. 



Its difference from Truncatula pinnata Roemer, 1840, which is 

 also a large species, is more difficult to discover, and there are some 

 very difficult cases to determine, but it differs from it in the aspect 

 of the nematopores, which are arranged in rows oblique to the 

 zoarial axis and which bear a proximal transverse lip, and in its 

 smaller pinnules, less jDrojecting on each side of the zoarial trunk. 



Occurrence. — Cretaceous (Cenomanian) : Le Mans (Sarthe) and 

 Montlouet (Maine-et-Loire), France. 



Cretaceous (Turonian) : Fontaine d'Antoigne near Chatellerault 

 (Vienne), Ruille Ponce (Loir-et-Cher), Cement near Chinon (In- 

 dre-et-Loire), Les Janieres and St. Calais (Sarthe), France. 



Cretaceous (Coniacian) : Chatham, England. 



Plesioty pes. —Canu collection and Cat. No. 68989, U.S.N.M. 



TRUNCATULA GRACILIS D'Orbigny, 1854. 



1S54. Truncatula gracilis d'Oebigny, Pal^ontologie frangaise, Terrain 



Cretace, vol. 5, p. 1059, pi. 798, figs. 1-5. 

 1909. Homoeosolen striatus Gkegory, Catalogue Fossil Bryozoa in British 



Museum, Cretaceous, p. 97. (Bibliography.) 



Gregory, 1909, identified D'Orbigny's species with Retepora striata 

 Hagenow, 1846. This is quite possible, but no direct comparison 

 having been made, we think that the better figure should haA^e pro- 

 visional priority. 



Occurence. — Cretaceous (Coniacian) : Lisle (Loir-et-Cher), 

 France. 



Cretaceous (Santonian) : Romorantin (Loir-et-Cher), France. 



Cretaceous (Maastrichtian) : Manie Roux (Charente) and Royan 

 (Charente Inferieure), France. 



TRUNCATULA CARINATA Reuss. 1846. 



1846. Honicra carinata Reuss, Die Versteinerungen der bohmischen 



Kreideformation, pt. 2, p. 63, pi. 14, fig.6. 

 1909. Homoeosolen carinatus Gregory, Catalogue Fossil Bryozoa in British 



Museum, Cretaceous, p. 73. 



Structure. — Gregory, 1909, wrote on page 75 " Pocta (op. cit. p. 

 7, fig. 3) gives an excellent transverse section (X26) showing the 



