CEPHALOPODA OF THE CRETACEOUS MAULS. 267 



although Mr. Meek cites it as from the State, probably basing his identifica- 

 tion on those mentioned above. I give the species here to help in the 

 identification should specimens of it be found in future, that the record 

 may be as perfect as possible. 



SCAPHITES SIMILIS, n. Sp. 



Plate XLiv, Figs. 1, 3. 



Shell small, the type specimen, the only one known at present, being 

 only five-sixths of an inch in its greatest length, and although not quite 

 finished at the aperture, would not exceed 1 inch were it continued to its 

 entire size. Volutions laterally compressed, rounded on the back, and 

 marked by fine transverse ridges to beyond the commencement of the outer 

 chamber, beyond which point the ridges are larger and indistinct, especially 

 on the sides. A single line of nodes marks the outer angle of the body 

 volutions, and are largest opposite the middle of the horizontal portion of 

 the coil. Septa not very crowded and rather simple, consisting of the dorsal 

 lobe and three lateral lobes on each side outside of the umbilical cavity, 

 which is quite small. Dorsal lobe moderately large, the lower branches not 

 quite half as long as the height of the first sinus, the extremities rounded, 

 and with a rounded protuberance on its outer side, above it there is one 

 other projection on each side. First lateral lobe large, broadly flabelliform 

 with six short blunt fingers arranged around its rounded end, and one other 

 at the junction of the first sinus ; second and third lobes small, and consist- 

 ing of only a single bluntly rounded member each. The first sinus equals 

 the first lateral lobe in size, but is bilateral at the extremity, each division 

 showing a slight indentation on the middle. The other sinuses are simple 

 rounded sinuosities, but slightly broader than the corresponding lobes. 



The species resembles in miniature S. nodosus Owen, from the Creta- 

 ceous of the Upper Missouri, and New Jersey, in its general form and fea- 

 tures, especially so on the back in the marking of the surface. There is 

 evidence, however, of only one line of nodes on each side, instead of two 

 as is usual on that one, although by no means always developed. There 

 is, however, a great and very marked difference in the form and details of 

 the septa, as on a young specimen of S. nodosus of the size of this one they 



