MIOCENE MOLLUSC A AND CRUSTACEA. 131 



Judging from the condition of the remains of this species I think it 

 may have been a rather thin and fragile shell, as the specimens are flattened 

 and crushed almost out of shape. The volutions have been highly convex 

 and rather short, somewhat more so than would be indicated by Mr. 

 Say's figure above cited, while the striae would seem to have had flattened 

 interspaces, the striae themselves being distinctly raised lines of nearly equal 

 width with the interspaces. I should suppose from the specimens seen that 

 it would properly belong to the genus Mesalia Gray. 



Formation and locality : In a dark micaceous clay marl of the Miocene 

 from the well-boring of Mr. L. Woolman, at Atlantic City, N. J. From the 

 collection of the Academy of Natural Sciences at Philadelphia. 



Family VERMETID^. 

 Genus ANGUINELLA Conrad. 



Miocene Fossils, pp. 77 and 78. 



It does not appear that any description of this genus was ever pub- 

 lished by Mr. Conrad. The nearest approach to one is the simple compar- 

 ison with Serpula and Petaloconchus of Lea, made on p. 78 of the Miocene 

 Fossils, which is as follows: "This genus differs from Serpula in having 

 septa, and from Petaloconchus Lea in wanting the revolving plates." The 

 bodies to which he applied the name are contortedly coiled tubes, closely 

 resembling those of Serpula, or are like those of Vermetus, except that they 

 do not form regular volutions during the earlier stages of their growth, as 

 do those shells. They appear to have been adherent to foreign bodies, and 

 to have formed straight tubes, or to have had a laterally spiral form for a 

 time, after which they grew in an irregularly coiling manner. The distin- 

 guishing feature, however, is that of having the tube divided into chambers 

 as it advanced in length, by deeply concave or u vaulted septa" at irreg- 

 ular distances. The first impression one receives of the shell is that it 

 belonged to an annelid, and not to a true mollusk. This would appear 



