259 



This species has more numerous septa than has L. Palinurus, 

 p. 25.) 



It occurs, both at Port aux Choix and Cape Norman, in F and G. 



4. Nautilus vvrmtus. The specimen is 5J- inches across, and consists of 

 about four whorls. Septa, in the last whorl, ten to the inch. The ventral 

 side of the last whorl is broad and nearly flat, the sides narrowly rounded. 

 Siphuncle unknown. 



The last whorl has a breadth of 27 lines on the ventral aspect, and a 

 dorso-ventral diameter of 18 lines. 



It is evident, that in perfect specimens this species must exhibit a wide 

 shallow umbilicus, exposing all the whorls. Its form must be much like 

 that of N. Poinponius, (ante, p. 26), but has more numerous septa. It 

 was found on the west side of the east arm of Bonne Buy, apparently in 

 Division H. 



5. Lituites Plato. The specimen is a portion of tho free whorl. It is 7 

 inches in length ; apparently about 20 lines in diameter at the larger 

 extremity, and 16 at the smaller. There are about 12 septa to the inch 

 throughout. It is curved to a radius of about 12 inches. It occurs 

 at Point Rich, in Division L. 



CRUSTACEA. 

 BATHYURUS SAFFORDI AND B. CORDAI. (Billings.) 



a b 



Fig. 241. Fig. 242. 



Fig. 241. Eathyurus Soffordi. a, the glabella; b, the pygidium. 

 242. B. CordaL The glabella, 



Remarks. B. Saffordi occurs at Cow Head, in Division P, in white 

 limestone, associated with great abundance of Maclurea ponderosa. It 

 is the most common trilobite at Point Levis and Phillipsburgh, in the lime- 

 stones of the Quebec group. 



B. Cordai also occurs at Cow Head, in P, but in a greyish limestone. 

 Some imperfect specimens of a species which appears to be identical with 

 it were found at Bay St. John, in Division F. It occurs at Point Levis 



