470 R. ETHERIDGE ON SPECIES OF ANTHRAPALZMON 
showed these supposed eyes to be only the bases of the anten- 
nules. 
In the type specimen the ridges of the carapace did not exhibit 
any traces of ornamentation; it is, however, now quite clear that 
they were finely crenulated in a highly ornamental manner. In 
the larger species from Roxburghshire, which I have called 
A. Macconochii, the cervical furrow is very strongly marked; but 
in A. Woodwardi, so tar as the remains at our disposal enable us 
to judge, it is not so, except in one or two individuals. 
The little object which I have called the first chelate appendage 
is not so satisfactory in its appearance as either the antenn or 
antennules ; nevertheless it is in the right position, and has assumed 
more or less the form of this organ; I may add that Dr. H. 
Woodward agrees with me in this reference. There extends 
through the centre of the body, longitudinally, a semiobliterated 
dark line. 
In their final description of the American A.? gracilis, Messrs. 
Meek and Worthen mention and figure what they call segmentary 
structure within the carapace*. A division into segments probably 
similar to this is met with in one or two of our specimens (Pl. XXIII. 
fig. 8). In one in particular there are no less than six of these 
visible within the crushed-down carapace ; in another individual there 
are five. 
Decided traces of ornamentation are not preserved, although in 
one specimen indications of small tubercles are, I think, traceable 
anterior to the cervical groove. 
In his original description of Anthrapalemon Grossarti Mr. Salter 
described the pleuree of the first thoracic segment as abbreviated ; 
but in A. Woodward: I have not been able to detect such a cha- 
racter, nor, in fact, any appreciable difference from the other 
segments. 
J am sorry not to be able to give further details of the thoracic 
appendages, for they are in a still less satisfactory state than in the 
Belhaven original. The greatest number discernible in any one 
specimen is five; it 1s, however, quite evident from the condition of 
the fossils that in this case they are not all preserved. 
The description of the caudal appendages given in my former 
account of this species appears to be correct, so far as it goes; I 
think it not unlikely, however, that the construction of the tail 
was more complicated than at first supposed, although there is no 
trace preserved of the very detailed composition exhibited by the 
tail of A.? gracilis, M. & W. 
A. Woodward must have lived in numbers together, for at two 
localities its remains are found in large colonies. At one locality, 
near Dunse, only one individual was met with sufficiently well 
preserved for examination ; but the dark buff shale was full of frag- 
ments. At one of the localitiesin Roxburghshire it is perhaps even 
still more common; for pieces of the cement-stone in which it is 
found are literally crammed with the flattened and confused remains. 
* Tilinois Geol. Report, iii. p. 554, f. a. 
