Goniatitiferous Devonian strata will have to be referred to Gonzatites. 
Thus we must look with some doubt on the following Devonian forms :— 
328 REPORT—1885. 
if 
Discinocaris dubia (Roemer) ‘ : . See Second Report, 1884, p. 79. 
NA lata (Woodward) . : E 6 Fs “i 
3 congener (Clarke) . J ; s p. 80. 
Spathiocaris Emersonii, Clarke . ‘ : 4 i “9 
a wungulina, Clarke. , F 33 5, p. 81. 
Pholadocaris Leeii, Woodward 
5 sp. } ” ” p. 82. 
Ellipsocaris Denalquei, Woodward 
( ps } é K, FA p. 83. 
Cardiocaris Roemeri, Woodward 
Pr bipartita, Woodward | 84 
s Veneris, Woodward m 72 Poon 
me Koeneni (Clarke) 
Dipterocaris pes-cerve, Clarke i 
fe vetusta (D’Arch. and De Vern.) 5 a p. 85. 
- procne, Clarke 5 
These, then, require further investigation ; but as numerous undoubted 
Phyllopoda, having structural features allied to those of the foregoing 
genera and species, occur in the Silurian strata that do not yield 
Goniatites, and as some even of the genera enumerated above are not 
always associated with Goniatites, there is no reason why members of the 
group should not occur even in Goniatitiferous strata. Thus some of the 
foregoing species may have no relationship with the Cephalopods among 
which they have been buried, but were lineal descendants of Silurian 
forms. 
In his paper in the ‘Neues Jahrbuch,’ &c., 1884, Band i. p. 275, &e., 
‘On the Phyllopod-nature of Spathiocaris, Aptychopsis, and similar 
bodies,’ met with in strata of Silurian, Devonian, and Carboniferous ages 
in Europe and North America, and described by M‘Coy, Salter, Barrande, 
Meek, Hall, Clarke, ourselves, and others, after an elaborate criticism of 
the subject, Herr W. Dames concludes :— 
1.—That some of the bodies in question are the Aptychi of Goniatites. 
2.—That for others, this explanation is, according to our present 
knowledge, inadmissible. 
3.—That the last are, however, in no case Phyllopods. 
1.—As intimated above, we accept the first conclusion. The British 
Museum lately obtained several specimens of these Aptychus-like bodies,! 
from the black limestone of Bicken; and Mr. Robert Etheridge, jun., 
discovered among them a specimen of a small Goniatites intumescens with 
an imperfect Aptychus in situ in its mouth-aperture. This Aptychus seems. 
to agree most nearly in form with the so-called ‘Cardiocaris lata,’ from 
Budesheim in the Hifel,? also observed by Mr. J. M. Clarke at Bicken.? 
The other specimens of Aptychus-like bodies, not in situ, but from the 
same black Devonian limestone, agree very closely with Mr. Clarke’s 
Spathiocaris Koeneni,* also from Bicken. 
? We have also seen a specimen of Aptychus sent to Mr. John Edward Lee, of 
Torquay, by Professor Ferd. Roemer, of Breslau, and labelled ‘ Aptychopsis, sp.= 
operculum of Goniatites intwmescens, Upper Devonian, Bicken, near Herborn, Nassau,’ 
in Dr. Roemer’s own handwriting. Some of these specimens have been figured in 
the ‘Geol. Mag.’ dee. 3, vol. ii. pl. ix. figs. 1-6, in illustration of a paper (pp. 345-352) 
treating of this subject in full, and of the relationship of the fossil Phyllopods under 
notice to Nebalia. 
* See ‘Geol. Mag.’ 1882, dec. 2, vol. ix. p. 388, pl. ix. fig. 13. 
$ «Neues Jahrb.’ &c. 1884, vol. i. p. 181, pl. iv. fig. 2. 4 Tbid. fig. 1. 
“a 
