PLATE XXXVI. 



Plectoceeas Jason (p^e 301). 



J^'igure 1. Side view of one of the types of this species, from the Chazy limestone at 

 the " bay above Clear Water Point," on the north shore of the Gulf 

 of St. Lawrence, opposite to the Mingan Islands. The test is broken 

 off of most of the body chamber, and that of the inner volution is 

 slightly restored from another specimen. 



Figure 2. Longitudinal section through the middle of another of the type specimens, 

 from the same formation and locality, shewing the out edges of some 

 of the septa, and the shape and relative position of the siphuncle. 



