22 
PALEONTOLOGY OF NEW YORK. 
cone of the larger specimens is generally rather straight, with the rings regular, 
and no appearance of having been attached to any other body; but the young 
specimens are irregularly curved, have more or less distorted rings, and are 
fixed upon corals or shells. ' With such only does Schlotheim appear to have 
been acquainted, and had not we been supplied with a complete series by Mr. 
B. Bright, we should have been induced to consider the full-grown specimen as 
another species of the same curious genus.”* 
^‘■Locality. Western slopes of the Malvern Hills; Dudley.” 
In 1872 Prof. Nicholson (Am. Jour. Sci., loc. cit.) proposed the name Conchi- 
COLITES, in the following terms; 
“ CoNCHicoLiTES, Nicli.—Animal social, inhabiting a calcareous (?) tube, 
attached in clustered masses to some solid body. The tube conical, slightly 
curved, attached by its smaller extremity. The wall of the tube thin, its ex¬ 
ternal surface devoid of longitudinal strice. The tube thin, composed of short 
imbricated rings, but apparently destitute of any cellular structure. Cast of 
the tube composed of short conical rings, its surface completely smooth, and 
destitute of striae or furrows. 
“ Conchicolites gregarius, Nich.—Tubes closely in contact, attached by their 
smaller ends to dead shells. Tubes varying in length from a quarter to half an 
inch, and having a diameter at its mouth of about half a line.” 
“ The preceding species is found growing upon the shells of Orthocerata in 
the Lower Silurian of the North of England. 
“ The following described species are from the Lower Silurian in the neighbor¬ 
hood of Cincinnati.” 
In the Geological Magazine, vol. ix, 1872, Prof. Nicholson published a paper 
on “ Ortonia, a New Genus of Fossil Tubicolar Annelides.” 
“ The following diagnosis gives the characters of the genus Ortonia, and of 
the single known species ; 
“ Ortonia, Nich.—Animal solitary inhabiting a calcareous tube, which is 
attached along the whole of one side to some foreign body. Tube slightly 
* In the discussion of these forms in the Third Edition of Siluria, under the Wenlock series, page 259, 
Mr. Salter gives the following interesting facts : 
“Coi-nulites sei'pularius (see pi. xvi, f. 3-10) is still, as in the Llandovery rocks, the principal annelide ; 
and, though more fi-equent in the Wenlock limestone, is not rare in the Ludlow rocks. The finest specimens 
are from the Wenlock limestone of Ledbury; but at Dudley Cornulites are found attached to shells, in 
groups of three or four together, like Sei-pulse, and they occur in profusion on the hard and seaworn surfaces 
of Ludlow rock at Marloes Bay, in Pembrokeshire, in masses a foot in diameter.” 
