184 



Annals of the Carnegie Museum. 



Scalites angulatus Hall, 1847, Paleontology of New York, Vol. I, p. 



27, PL 6, figs, la, ib. 

 Scalites angulatus Emmons, 1855, American Geology, p. 159, PI. 4, 



fig. 20. 

 Scalites angulatus Ulrich and Scofield, 1897, Paleontology of Minne- 

 sota, Vol. Ill, part 2, p. 933, fig. 4. 



The genus Scalites, proposed in manuscript by Conrad, published 

 by Emmons and described by Hall, has never been well known, owing 

 to the poor state of preservation in which the specimens occur. In 

 the few localities in which they are found, — only three are known, — 

 they occur in a fine-grained, dense limestone matrix, which adheres so 

 closely to the shell that the only examples ordinarily obtainable are 

 the casts and the natural sections so abundant on the weathered sur- 

 face of the rock, in which the species occurs. 



Most writers have placed the genus close to Raphistoma, many, 

 indeed making Raphistoma a synonym of Scalites. Ulrich and Sco- 

 field (Joe. cit.) have made Scalites a genus in their family Raphi- 

 stomidae, a disposition of the genus which seems in accord with the 

 characters of the shell as now known. 



The only specimen seen by the writer in which any considerable 

 portion of the original shell is retained in such a condition as to show 

 surface markings, is a specimen preserved in the Hall collection at 

 the American Museum of Natural History, New York City. 



Fig. 3. Scalites angulatus Emmons. Top and side views of a specimen pre- 

 serving a part of the shell. The side view shows a part of the inner lip, but both it 

 and the columella have been injured and do not show their true form. Natural size. 



