VERMES. 311 



Formation and locality. Merchantville clay-marl, Lenola 

 (163), near Jamesburg (140) ; Navesink marl, near Crawfords 

 Corner (i26 7 ), etc. 



Geographic distribution. New Jersey. 



Hamulus ?? sp. 

 Plate XIX., Figs. 3-4. 



A single fragmentary specimen of a probable worm tube from 

 the Wenonah sand differs from any others in the collection, and 

 cannot be identified with any, described species. The internal 

 cast is cylindrical and straight, with the sides very gradually 

 diverging from the smaller to the larger extremity. A squeeze 

 of the impression of the outside of the tube shows it to be marked 

 with distinct, rounded, annular ribs. 



The dimensions of the fragment observed are: length, 25 

 mm.; greater diameter of internal cast, 9 mm.; lesser diameter 

 of same, 8 mm. 



The species differs from the cylindrical bodies here described 

 as Hamulus lineatus in its much greater size, but the external 

 characters of that species are unknown. 



Formation and locality. Wenonah sand, near Crawfords 

 Corner (i26 3 ). 



Geographic distribution. New Jersey. 



Worm burrow. 



Plate XIX., Fig. i. 



In one bed of the Tinton formation at Beers Hill cut, south of 

 Keyport, there are large numbers of more or less vertical, straight 

 or slightly curved cylindrical bodies with parallel sides, usually 

 from 12 to 15 mm. in diameter, and attaining a maximum length 

 of about one foot. These bodies are probably the casts of the 

 burrows of some organism, probably one of the segmented worms. 



Formation and locality. Tinton beds, Beers Hill Cut (i29 8 ). 



Geographic distribution. New Jersey. 



