Clakkk — The Naples Fauna. 



59 



At the first septum and those immediately following, the siphonal collar 

 lies close upon the inner shell surface as indicated by the absence of any line 

 of union between the sipho itself and the wall of the shell. This interspace 

 which is noticeable in the earliest stages gradually becomes obliterated and 

 in early neanic conditions the suture-line is uninterrupted. 



Following are more precise bibliographic reference lists of the varia- 

 tions of the Intumescens type mentioned in the foregoing discussion. 



Manticoceras Pattersoni, Hall (sp.), i860. 



1848 Goniatites sinuosus, Hall. Geology of New York, Rept. Fourth Dist., 

 p. 244, fig. 6 (p. 243) ; p. 245, fig. 9. The originals are very incom- 

 plete examples, in themselves insufficient to give definition to the 

 species. One of the specimens is from the shales on Cashaqua creek. 

 It is also stated to occur on the lake Erie shore. 



1860 Goniatites Patersoni* Hall. Thirteenth Ann. Rept. N. Y. State Cab. 



Nat. Hist., p. 99, figs. 9, 10. The fragment which served as the 

 original of the species shows the characteristic septa. It is stated to 

 have been obtained from the shales on Patterson's creek, Livingston 

 county. This is a localitv of the lower Portage shales. 



1875 Goniatites Pattersoni, Hall. Twenty-seventh Ann. Rept. N. Y. State 

 Mus. Nat. Hist., p. 136. The species is mentioned in a list as occur- 

 ring in the Portage and Chemung groups. 



1875 Goniatites (Ctymeniaf} Xinxhda^WixW. Twenty-seventh Ann. Rept. 



N. Y. State Mus. Nat. Hist., p. 134. (Also in the same paper pub- 

 lished 1874, in advance of this report.) This form is here set off as 

 distinct from Gon. sinuosus. With regard to this proposed name, 

 Prof. Hall subsequently wrote: u The Gon. sinuosus as originally 

 illustrated in the Geolog. Surv. of AT Y., Rfpt. of Fov/rih Dist. y 

 included two very distinct species. In order to rectify this error, I 

 published, in 1874, a description of G. Nundaia, recognizing the 

 species as being in part those forms which had before been included 

 under G. smuosus. By this rectification it was intended to leave 

 the form figured on page 245 of the Geological JReport as the repre- 

 sentative of G. sinuosus. The condition of preservation of the 

 original specimen is such as to preclude a critical examination of 

 the septa and other important characters, while its form and external 

 aspect are so nearly similar to G. discoideus that I am induced to 



*This is the original spelling of the name. Professor Hall, however, informs me that the specific name was given as a 

 mark of respect to the Hon. George W. Pattbrson, Lieutenant Governor of the State in 1848. 



