Contributions to Paloiontolocjy. 39 



•listant, coarser striae, before reaching tlie aperture. The specimen fig- 

 ured is from the collection of C. B. Dyer, and was found near the 

 top of the hills at Cincinnati, Ohio. 



Walcottia, n. gen. 



This genus consists of long, tapering, rugose, flexuous bodies, worm- 

 like in form, but composed apparently of fucoidal matter. The fossils 

 taper to a point at one end, and are enlarged at the other, or present 

 the appearance of suddenly' bending down and entering the rock. 

 We are uncertain whether this fossil is of animal or vegetable origin; 

 though, we think it is possible that it is the long lost borer of Silurian 

 age, which has left so many holes in the corals and the rocks. The 

 generic name is in honor of Mr. C. D. Walcott, the distinguished 

 3'oung geologist of Trenton Falls, New York. 



Walcottia rugosa, n. sp. (Plate II., figs. 11 and 11a.) 



Y&ty ■—Rugosu,'!, rugose.] 



This species consists of a slender, tapering, flexuous body, evenly 

 rugose on each side. From the middle of the back, strong ridges run 

 off, diagonally inclined toward tlie tapering end. These ridges are in 

 pairs, one upon each side of the body, and form an angle at their junc- 

 tion on the top of the fossil. 



The two specimens figui'ed are on a slab, from the collection of C. B. 

 D3'er, which appears to have been penetrated in several places by what 

 are commonl}' called worm holes. Plate II., fig. 11, represents a 

 specimen just entering one of these iron rust, or worm holes, 

 while the balance of the bod}' is in relief on the slab. Plate II., 

 fig. llcf, represents part of the body of a specimen, one end 

 of which appears to be lost in a worm hole, and the other not yet 

 emerged. A specimen in S. A. Miller's collection, represents a track 

 from one worm hole to another, 1^ inches apart. The track curves 

 from one side of a direct line to the other, and has every appearance 

 of having been made \)y such an object as fig. 11 represents. It was 

 found in th€ excavation for Columbia Avenue, about 150 feet above 

 low water mark, and Mr. Dyer's specimen was found near the top of 

 the hills, at Cincinnati. 



Pupa cixcinnatiensis, n. sp. 

 By Chas. R. Judge. 



Shell delicate, minute, shining, translucent, nearly colorless, smooth, 

 very faintly marked b}^ the strite of growth, and by numerous micro- 

 scopic wrinkles; apex obtuse ; whorls 4^ to 5, convex separated by a 

 deeph' impressed suture ; aperture semi-oval, having in the right hand 



